What are you getting for MPG around town?

[Nickleahy23]

This has just always pissed me off, now its worse with the rims..if the gas light comes on and i put in about 7 gallons, im lucky to get 100 miles off that $20 or so bucks..i know that the tahoe arnt that good in city, but still..last 20 bucks i got 115 miles, and 90 miles were cruising 55 mph...i have a new fuel filter, oil, air filter, spark plugs, FPR, seafomed, cleaned MAF etc;..also a BB tune on 93 octane..only thing left is 02 sensors..i wanted to wait and get them when i got headers since id be tuning the rears out anyway, but i guess ill get some new front 02s and go from there..i dont really know what else to do..Also ive heard you guys sayin you can spin your tires and shit..i cant even power brake it in the rain on stock tires..thats with the tune and everything..what could be messed up? its got 160k on it but doesnt burn any oil and runs great..

[blueflamed03]

hold off on getting new 02's, if you get LT headers with ORY, you will do away with 02's anyway......

[road1will]

my last few tanks my milage has dropped significantly. around tound on my last tank i only got 12. before that i could get 16-17

[oak510_tahoe]

In the city I'm averaging 12-13. If I do more freeway then 14-15. I also recently changed the intake, and did the RP diff fluid change, so I'm hoping to see a increase.

[Nickleahy23]

hold off on getting new 02's, if you get LT headers with ORY, you will do away with 02's anyway......

well the front 02s will still be there, but not the rears..i wouldnt get new rears anyway..Justin said they dont effect the mpg at all, they are just there to see if the cats are working..

Besides the headers, new o2s, and a CAI, i really dont know what else i can do..it has exhaust, i baby it for the most part, never cruise over 73 on the interstate, 60 in a 55..

[blueflamed03]

they just get crappy mileage...mine does 12-13 in town, about 16-17 on highway.

Found what headers you plan to go with yet?

[rdtahoe]

they just get crappy mileage...mine does 12-13 in town, about 16-17 on highway.

Found what headers you plan to go with yet?

That exactly what my '00 LT 5.3L has always gotten since new, no better, no worse.

[chistoso]

Im getting 13-15 in town and 17-19 on the highway with the Whipple and the tune, I can spin the rear wheels but I have a supercharger and could never do it stock, not even the stock tires..

[tybardy]

well, i drive about 75% highway on a tank of gas and when i am not getting on it i get just shy of 500 miles to a tank... so about 20mpgs right now.

[Man Van]

About 14-15mpg in the city.
With it getting hotter and running your AC more, you will see a decline in gas mileage. I wouldn't have gotten a 93 octane tune. There's no reason to use that high of octane unless you have forced induction. More than likely your timing is advanced requiring a higher octane. When adding more timing, most of the time, you will use more gas in the long run.
Personally, I plan on having an economy tune done to my Tahoe. I just don't see a point in adding performance parts to a vehicle that weighs so much. Logically to me a V8 car would be a better platform to toy with. Less weight, better mileage, spend the same amount in performance parts and you will allways be faster. To each their own though.

[Nickleahy23]

well, i drive about 75% highway on a tank of gas and when i am not getting on it i get just shy of 500 miles to a tank... so about 20mpgs right now.

jesus..most i ever got on 100% highway was 360 miles on a tank with stock tires and that was pushing it with the gas light on..a normal tank gets me like 260 miles..im thinkin of goin down to a 87 octane tune here soon..premium is $3 bucks where i live so its gettin expensive..

I plan on goin with LPP headers i think..$500 for the headers and ORY pipe..just bolt them on and weld them up and hook it to the stock exhaust and be good to go..

[Modded]

I get about an average of 20MPG due to responsible driving, K&N and Magnaflow.
My DTC reads about 426 miles to the tank, an I get on the highway every once a while but mainly city!

[tybardy]

jesus..most i ever got on 100% highway was 360 miles on a tank with stock tires and that was pushing it with the gas light on..a normal tank gets me like 260 miles..im thinkin of goin down to a 87 octane tune here soon..premium is $3 bucks where i live so its gettin expensive..

I plan on goin with LPP headers i think..$500 for the headers and ORY pipe..just bolt them on and weld them up and hook it to the stock exhaust and be good to go..

DDEEAAAAMMMMMM mang.... thats not good enough MPGs... you hard on the throttle? I also have a black bear 91 octane tune. I have the most aggressive tune Justin could do for a daily driver. I also have a CAI and a magnaflow muffler. I would say the rims are hurtin you but they should be hurtting you that much, i too am pushing big wheels and they are nice and wide (305's). so we are running similar setups... you have an intake setup?

I think you might want to have a look into something because you shouldnt have any trouble at all getting at LEAST 400 miles to a tank...

[Nickleahy23]

DDEEAAAAMMMMMM mang.... thats not good enough MPGs... you hard on the throttle? I also have a black bear 91 octane tune. I have the most aggressive tune Justin could do for a daily driver. I also have a CAI and a magnaflow muffler. I would say the rims are hurtin you but they should be hurtting you that much, i too am pushing big wheels and they are nice and wide (305's). so we are running similar setups... you have an intake setup?

I think you might want to have a look into something because you shouldnt have any trouble at all getting at LEAST 400 miles to a tank...

those mpgs were with stock tires..

i have a new MAF(OEM), new fuel filter, new plugs, cleaned TB, K&N drop in filter, Magnaflow muffler, Most aggressive BB tune, new oil etc..i baby the shit out of it..i do notice a little dark smoke on start up and possibly running a little rich, so thats what leads me to think i should replace the 02 sensors..

my tune was also done with the datalog cable so he checked everything over and it all checked out good..

[Alex29573]

i get 340 miles to the tank on a 4.8 with 3.42 gears

drop in filter and 22s is what i have..

[Max]

I drive like a lunatic and get 330-400 out of a tank. Longtubes helped, I think you need some oxygen sensors my buddy gets 16-17mpg with almost 200k in his hoe.

[tybardy]

thats really weird man, you should be doing quite a bit better then that with that setup... like i said, the only thing we have different is the tires... well now I have a full CAI, i think you would do a little better with an aftermarket intake tube like an airaid or something similar... but even still, something seems wrong there

[SS71]

A couple things come to mind. First try BP or Shell gas, also the lack of bottom end torque sounds like the torque converter may not be stalling enough. Set the e-brake and powerbrake it to full throttle for about 2 seconds and see if the rpm's jump to 1500 or so. Also see what the rpms jump to from a dead stop to WOT as the truck just starts to move. My wife's 02 tahoe jumps to like 1600rpm on take off at about 40% throttle. (I'll do a WOT soon) Also a friend of mine's hoe won't get over 850rpm before the converter reaches its flash speed. Needless to say he's probably gonna get a converter soon to help pull his boat. Plus if the converter is that messed up it may not lock up. But its hard to say saywithou won yours without seeing live data. Even the data that Justin has may not be enough because it may not have been "acting up" while that data was recording. Diagnostics can be a BIT@±.

[scott99zx6r]

I get like 320 per tank all highway @ 75. 4.8 mostly stock except Airaid air box. Just did a fuel injection service and decarb w/ the intake and it jumped to 360 per tank. The larger wheels kill it too.

[tybardy]

i feel special!!!

i have done a lot of small things to the truck, not sure if they helped.

new fuel filter
new pluggs
ran two cans of seafoam through the gas tank (one before fuel filter one after)
ran one can of sea foam through the vacuum line
ran one can in the crankcase about 500 miles before an oil change
swaped oil over to royal purple 5w-30
and then obviously comes the "after market" parts.
I am also maticulous about my tire pressure, i keep 35lbs at ALL times

[Grocery Getter]

I am getting a solid 15.5 city right now since I live in Phx and have the AC on all the time now. I was getting 16-17 in the winter before my BB tune so I am hoping that will be closer to 18 in the winter. I et 17-20 highway(pre BB), it just depends on the trip. If I drive to LA from PHX I only get like 15 because it's a super windy drive and it's all on a slightly uphill grade that makes the MPGs go to shit. If I drive to Northern AZ which ends up at like 7Kft I can get 19+ since it's steep climbs with lots of down hill..... I plan on doing the e-fan soon and that will help a lot....

[Nickleahy23]

A couple things come to mind. First try BP or Shell gas, also the lack of bottom end torque sounds like the torque converter may not be stalling enough. Set the e-brake and powerbrake it to full throttle for about 2 seconds and see if the rpm's jump to 1500 or so. Also see what the rpms jump to from a dead stop to WOT as the truck just starts to move. My wife's 02 tahoe jumps to like 1600rpm on take off at about 40% throttle. (I'll do a WOT soon) Also a friend of mine's hoe won't get over 850rpm before the converter reaches its flash speed. Needless to say he's probably gonna get a converter soon to help pull his boat. Plus if the converter is that messed up it may not lock up. But its hard to say saywithou won yours without seeing live data. Even the data that Justin has may not be enough because it may not have been "acting up" while that data was recording. Diagnostics can be a BIT@±.

I use quality gas, either mobil or bp..doesnt make a difference..i tried the stall and it went up to about 1600-1800..im just not sure anymore..i mean the truck drives great, has good power when your crusing, just absolutely no low end and bad mpg..

could it just be that your 2004s and such have more power and are newer compared to my 2000?

[blueflamed03]

what gears do you have Nick?

[Sasquatch]

around town i get around 15-16 and on the highway if i stick to about 65mph i get 20 mpg. i have a BB 91 octane tune, spectre CAI and a flowmaster catback. i`m sure i`d get more if i didn`t put the 20`s on (90 lbs each) compared to 60 lbs for the stock 16`s.

[blueflamed03]

and if you have 3.42's and add a couple inches in tire height, basically you have like 3.08's pulling a 6000lb truck...

[Nickleahy23]

the truck has 3.73 gears..highway the most ive ever gotten was 17.1 and that was 65 mph constantly and from one gas station to another..that was with stock wheels as well

these tires are the same size as my stock ones as well

[blueflamed03]

hmmm, odd........

[Nickleahy23]

ya i really dont know lol..it dont even enjoy driving it right now that gas is going up again..thank god i have a moped to cruise around, but then the dog cant ride with me..

[blueflamed03]

so $20 gets you what, 8 gallons? Here, has is $2.49...and your using good gas because of tune...so maybe higher?

so $20, get's 8 gallons.

15 miles to the gallon is 120 miles.

[tom q]

16-17 in town and 20.5 highway if I go 65 mph. Here's what I've discovered: I was getting 12 - 13 in town when I had a K&N filter in the box. I took out the filter and gave me 16 - 17. More torque, more response and better mileage.....but I'm driving without a filter....this means time to buy a CAI. The hoe wants more air :)

[tybardy]

16-17 in town and 20.5 highway if I go 65 mph. Here's what I've discovered: I was getting 12 - 13 in town when I had a K&N filter in the box. I took out the filter and gave me 16 - 17. More torque, more response and better mileage.....but I'm driving without a filter....this means time to buy a CAI. The hoe wants more air :)

the K&N is the best drop in IMO.... you dont need a full CAI to get the benifits, you can just replace the tube, that foctory tube is the MOST restrictive part of that whole intake setup... however you can get a CAI off ebay for under $70 shipped to the door and they are titties, a lot of guys on this site are running with them and have good things to say

[Nickleahy23]

16-17 in town and 20.5 highway if I go 65 mph. Here's what I've discovered: I was getting 12 - 13 in town when I had a K&N filter in the box. I took out the filter and gave me 16 - 17. More torque, more response and better mileage.....but I'm driving without a filter....this means time to buy a CAI. The hoe wants more air :)

think i should try a stock filter? it was in the truck when i got it, but i cleaned it and such..maybe ill try that

[tybardy]

what filter are you running now? is it bone stock already? you will see noticable gains in your MPG's if you get an aftermarket intake setup, you wont see that full potential without having Justin re-tune it though

[Sasquatch]

16-17 in town and 20.5 highway if I go 65 mph. Here's what I've discovered: I was getting 12 - 13 in town when I had a K&N filter in the box. I took out the filter and gave me 16 - 17. More torque, more response and better mileage.....but I'm driving without a filter....this means time to buy a CAI. The hoe wants more air :)

how long have you been driving without a filter? :boxed:

[Nickleahy23]

it has a K&N drop in..I got creative today and cut out the bottom of the air box, ran a tube from that down to the tow hook hole and mounted it..will get some cooler air into the air box..also i cut off the gay silencer part of the air box and patched that up, so now its just a straight tube from the air filter to the TB..also cleaned the air filter and the MAF..hopefully i see a little progress..i plan on an AEM bruteforce later on this summer anyway

[SS71]

Forgot to say earlier that I have an 02 5.3, 3.42's k&n drop in and 285's on the stock wheels. I tuned it myself on with HP Tuner, have the super servos from superior transmission and am always carrying an extra 80 plus pounds of crap in the back. Around town easy goin it'll do 16 mpg playin around about 15 mpg. At 67-68 mph on cruise its 21.5 to 22 mpg. I just can't pull my foot up and let it do 55 mph for any distance but it'd probably do 25 mpg or better. As far as power It will spin em up on wet days and squall belts and tires when it shifts. No complaints from me on power, last week it spanked a 6.0 sierra denali with a CAI an whatever else. Plus it pulls on my dads tuned 07 tahoe 4x4 while gettin better fuel mileage than his on average.

[Nickleahy23]

so yours with 3.43s has more power then mine with 3.73s, as well as getting better mpg..idk wtf the deal is..i need to just fine a 6.0 with a 4l65e behind it and swap it in..same mpg plus more power

how fast do you get in first? if i floor it from a stop, ill be going 52 when it shifts at 5700 rpm..

[tybardy]

mine is out of first pretty fast, it shifts at 5800+... im doing over 90 when it shifts into third

[tom q]

how long have you been driving without a filter? :boxed:

2 days.....

I put the filter back....to scared to know what could happen

[Nickleahy23]

well i put in $20 the other day at 2.89 a gallon..thats 6.9 gallons..im at 92 miles and the gas light came on, so 92/6.9 roughly is 13.3 mpg..i guess thats not horrible..thats mostly city, with maybe 25 miles of cruisin 60 mph..still could be better

[tybardy]

well i put in $20 the other day at 2.89 a gallon..thats 6.9 gallons..im at 92 miles and the gas light came on, so 92/6.9 roughly is 13.3 mpg..i guess thats not horrible..thats mostly city, with maybe 25 miles of cruisin 60 mph..still could be better

should for sure be better if you ask me

[J-Will]

wow. im reading everybody elses posts and its making me think i have a problem? im getting 12 mpg in town with the 6.0 awd on 24s. and almost 13 on the highway. no matter how fast im movin, cruise, etc.

[Sepiroth]

Ok so I get to finally join this thread. After my CAI install and no tune as of yet, I filled up tonight.

I drove a mix of highway and city, 268 miles and filled up topped off with 17.4 gallons. I calculated and came up with 15.4**MPG. And that's running E85.

The split between highway and city driving is usually 40-50%. I gained a hair over 2MPG from the OEM intake setup.

All in all I feel the cheapy Ebay intake was way worth it.

[tybardy]

All in all I feel the cheapy Ebay intake was way worth it.

Yes mang, it WAS worth every penny and THEN some, you made a good investment as AIR (not gas) is what your motor needs the most. These OEM intakes are fucking garbage and the short ram intake, i dont care what brand, is a MASSIVE improvement over the stock BS.... great buy brother. ditching the factory muffler for something that breathes a little better will help too, and then get a tune and you will see some really nice MPG gains, as well as more power.... now THATS having your cake and eating it too

wow. im reading everybody elses posts and its making me think i have a problem? im getting 12 mpg in town with the 6.0 awd on 24s. and almost 13 on the highway. no matter how fast im movin, cruise, etc.

im not sure if you have an actual problem... someone else might be able to shed more light on this. However if you are running a completely stock setup with those 24" rims, you might be spot on with the MPGs.

I want to remind everyone that the 19 or 20 mpgs I get every tank is not only a matter of the mods i have done, but its also due to me driving about 75% highway and being VERY ginger with the accelerator.... and i mean i drive very responsibly unless i decide its time to put my foot completely in it (happens about once per gas tank) if you guys are seriously curious about your MPGs, run some personal tests : like driving PAINFULLY slow for an entire tank of gas

[J-Will]

All in all I feel the cheapy Ebay intake was way worth it.

ok, after reading all of this last night i decided to go the cheap route as well. autozone had a full intake for something like $120. figured it was better than nothing. i installed it last night and reset my digital junk so itd give me a new average MPG reading, drove around 50% highway 50% in town today, thru half a tank and its gotten me up to about 13.5 mpg average. so 1.5 mpg more than before. prolly not as good as an FIPK k&n but its something! and it sounds nice along with my dual flows dumped before the axle. mmmmm :)

[Max]

...but its also due to me driving about 75% highway and being VERY ginger with the accelerator.... and i mean i drive very responsibly unless i decide its time to put my foot completely in it (happens about once per gas tank) if you guys are seriously curious about your MPGs, run some personal tests : like driving PAINFULLY slow for an entire tank of gas

I'd rather have fun and get 15mpg then drive like a bitch and get 17. You'll probably get better mileage with a drop too, mine went up after the spindle installation.

[tybardy]

I'd rather have fun and get 15mpg then drive like a bitch and get 17. You'll probably get better mileage with a drop too, mine went up after the spindle installation.


:driver: i like to have fun too... but since 90% of my driving is to and from work, its usually fruitless to stomp on it either way.

however, i am useually disapointed when i stomp on it! I want so much more power, i guess i have unreal expectations about my trucks performance, cant wait till i have enough cheddar for FI

[Max]

These trucks like being rallyed, mine is much more responsive when I stand on it all the time. I can't get worse than 13mpg driving like a lunatic so I honestly don't care about driving slower. I'll usually just wind it out getting on the interstate but it's so loud I have to open it up.

[tybardy]

i also dont want my truck dying before im done payin on the bitch... and i think my tranny might be warming up for its big finally.

[Max]

Mine is kinda weird lately too, oh well just another thing I'll need built. I know a dude with over 200k on his tahoe and he beats the living piss out of the poor thing. No issues except a fuel pump.

[Sasquatch]

i went to my property in central new york this weekend. 141 miles away loaded with about 300 lbs of dogs and a few hundred lbs of other stuff.

i did about 60% highway at 75-80 mph the whole way. the entire way there and back is up and down hills and i got 18.1 mpg. if it was flat terrain i`m absolutely sure i`d be at 20mpg+ it`s the first trip up there i`ve made since the BB tune and CAI. last trip i made before the tune and cai i got 16.5 mpg.

[Nickleahy23]

These trucks like being rallyed, mine is much more responsive when I stand on it all the time. I can't get worse than 13mpg driving like a lunatic so I honestly don't care about driving slower. I'll usually just wind it out getting on the interstate but it's so loud I have to open it up.

i noticed this when i was tryin to follow you to your house haha

well i got 17.1 mpg last tank..it was like 115 miles on 20 bucks at 2.99..that was half city and half interstate, part pulling a u haul trailer..so maybe my little intake system helped..im driving 200 miles to school tonight so hopefully i can test if its gettin better or not..

[Nickleahy23]

well today was a wierd experience lol..I pulled a uhaul to school for the gf. it was the biggest enclosed one they have, so it weights like 1500 unloaded..had 2 couches, a fridge, chairs, bed etc in it..prolly 3k at least..i pulled that 175 miles to school going 70 and then drove the 175 miles home without it, for 350 miles total and then the gas light came on..my MAX ever was 355 miles and that was cruising interstate for the entire time going 65..so id say my little intake mod/cleaning the maf and filter helped..its just a bit over 17 mpg and that was with pulling that uhaul..

also on the way home i got rolled for tint, tinted tails, clear turns in front, cracked windshield..fix it tickets..pain in the ass

[tybardy]

good to hear the MPG's are going up... these motors are some air hungry bitches.

sucks about the tickets though, its those stories that make me glad to live in AZ, none of those things are illegal here (unless tint is too dark on the driver and passenger window)

[Nickleahy23]

well my mpg around town still sucks, but i just pulled 19.5 on the interstate runnin 74 miles an hour..164 miles and 7.8 gallons i think..pretty legit..that was with 4 people and bags as well

[tybardy]

well my mpg around town still sucks, but i just pulled 19.5 on the interstate runnin 74 miles an hour..164 miles and 7.8 gallons i think..pretty legit..that was with 4 people and bags as well

you around town MPG is most likely (at this point) mostly effected by your driving habits, maybe a little to quick off the line and breaking later then you should. If i let my girlfriend drive my truck, my MPG's go down a bunch... same truck, different driver = different MPG's

[Nickleahy23]

i really try to drive like a bitch lol..always coasting, barely hitting the speed limit..i guess i did get almost 15 in town last time..maybe im just wanting too much haha..my bagged truck would pull 23 highway and 19 city and that was a 350

[tybardy]

these hoe's are HEAVY ASS BEASTS... you also have larger heavier rims that are going to hurt your gass milage... my twenties are aluminum so even though they are over sized, they down weigh much.

[Denali---LQ]

10.5 MPG not bad i think

[tybardy]

10.5 MPG not bad i think

holy shit! what do you have done to that thing? My girlfriend had an 05 Denali XL and she got 13.5 mpgs... and she did almost all city driving!

[dougo]

06 z71 KN mich mxl mobil 1 my gas milage varies with the gas is use shell appears to be the best exxon the worst 18.5 hwy 13.5 city
Dougo

[dwmmatt23]

i put in 10 gallons and my light comes on right at 100 miles

[Racie]

I am only getting 13.2 mpg (42lb injectors) with my 6.0 liter turbocharged. I will be getting another tune pretty soon I will see what happens then...

[El Capitan]

I'm getting about 10.5-11 average between 230-250mi to a tank on 93

[Bailey-Hoe!]

13.5 City with AEM Dry Filter CAI. 2 mpg increase over stock.

[2000Yukon]

14.5- 15 pretty consistently.

[98aggie]

16 around town
20-21 on the highway