Cat back flowmaster system

mdiacont322 · Mar 8, 2010

has anyone ever put a flowmaster catback PICK UP system on their hoe? I want the dual side exit, but flowmaster doesnt make a kit for the tahoes, only the k1500 pickups. Somebody school me on this PLEASE.

Mike

blueflamed03 · Mar 8, 2010

unless you like the tips, the exhaust is 3" or dual 2.5" out already, IMHO, just replace the muffler for 1/16th the cost. If you want duals, you may be cheaper to just have it done.

rican4lfe · Mar 8, 2010

http://www.flowmastermufflers.com/s...ducts_id=3740&ab=17165&recordID=&vehicle=1997 GMC YUKON V8&orig=17165

http://www.flowmastermufflers.com/s...ducts_id=3741&ab=17166&recordID=&vehicle=1997 GMC YUKON V8&orig=17166

First one is the 2 dr and the second is the 4dr.. years 96-99 hope this help.. they are both cat back systems.....

I am currently running true dual with flowmaster 40 series, oem cats with gibson headers.....

mdiacont322 · Mar 8, 2010

Ive looked at those kits... im looking for the dual side exit though... one pipe on each side. Ive took the truck to a bunch of places here in jersey and the cheapest quote i got for dual tailpipes if i already had the muffler installed is about 400 bucks alone! yikes! and blueflamed03- my truck has the dual flanged cat so it is already dual exhaust to the muffler, im just having a hard time figuring out how to get a dual side exit system. Flowmaster makes one for the pickups, im just wondering if anyone knows if they will fit the tahoes... im assuming the k1500 pickups and the tahoes share the same frame in 1997.

blueflamed03 · Mar 8, 2010

does it go from two manifolds, to one pipe, into cat, then dual out?

mdiacont322 · Mar 9, 2010

It goes from two manifolds, stays two 2" pipes with two separate cats all the way into the muffler (there is a flange after the cats to separate the front half of the exhaust from the back half im guessing for ease of removal, but it still stays 2 pipes). Then it exits the muffler as one 3" tailpipe.

What i want to do is to take the back half of the exhaust off and get an intermediate pipe that merges the two pipes into one, or keep the dual intermediate pipes and run two mufflers.

Either way, what i am looking for is one pipe coming out on the left behind the wheel, and one pipe on the right. I would piece it together myself, but that is too many pieces, and too much clamping and or welding.

Sorry if it seems confusing. :/

boble94 · Mar 9, 2010

i have seen people on here with flows, but i dont get how.
my 99 yuk has dual in, single outs. but flow does not make 40's for these trucks. so how did you guys do it?

cam3439 · Mar 9, 2010

They probably got a custom job from a muffler shop. Go ask a shop and ask how much the job would be.

mickbozard · Mar 9, 2010

Thats what i have done to mine. I cut muffy and Smiley (Local Muffin Man) put 2 flows in standing up beside each other then ran duals out the sides with tips.
BTW dont do it ! NO LOW END power, it cuts it down a good bit. At least on mine it did. I drove it down the road and turned around for him to take it off, but he didnt have time so i just lived with it. I like it now, but still no low end. Also cost me $120, cya

mburns5us · Mar 9, 2010

I just had it done dual in dual out for 150 they added muffler and one tailpipe with echo tips

wicked2000 · Mar 9, 2010

Hey mdiacont322 I have the same set up you have, and i added 2 1/4 inlet 2 1/4 out flowmaster 44s. I wanted them out to the sides also behind the rear wheel. I ended up doing this and it sucked. :emotions122:

It has an ugly sound going back to to shop get done all the way to the back with chrome tips.

mdiacont322 · Mar 10, 2010

if i buy a flowmaster system, what they do is they take the two pipes and merge them into one 3" pipe. from there its one single inlet muffler with two 2 1/2" tailpipes. This is for the pick ups though.

One of my buddies has a 5.3 with the same super 40 muffler setup (single in, dual out) and it doesnt sound bad.

I actually had a dual in dual out super 40 on, but it spread the pipes and blew out my flange gasket.

I have seen somebody on here with a single 4" tailpipe. I'm also wondering if it would be better to get a single side exit with a 4" tailpipe.

AND- how much low end power are you guys losing?

Thanks
mike

Cat back flowmaster system

mdiacont322

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