07+ Yukon XL Denali Exaust

[Davey]

I am looking for a good cat back system for my XL Denali. I have been looking (Magnaflow, Gibson, MBRP) and just don't know so I am turning to you guys and maybe some of you have them installed already and can give me a first hand thoughts. Here is what I am looking for:

Little to no more cabin noise than stock. (Thanks to the Wife!)
More POWER
More MPG
More Noise OUTSIDE, Love the stock sound if it was just a little louder and breathed a little more.

One that caught my attention was a company on Ebay selling a Gibson catback with the K&N 57-series intake for $600... Sounds Good...?

I am not looking to spend a whole lot. (Thinking $400-$600 range). I am very mechanically incline and will be installing it myself so not looking at any labor costs. Let me know what you guys think! Thanks, Davey

 

[rlschmidt14]

I have the gibson dual extreme (on my Tahoe), and it is not much louder in the cabin but definitely louder than stock. Perfect combination of increased sound, looks, power. My buddy had a magnaflow which was a bit louder.

I really like my gibson because there is NO drone on highway, which is one of the biggest turn offs I have.

 

[jd08]

Maybe look into the SLP resonator delete pipe and tip. It does give you a deeper and loader sound. It helps also because it eliminates the resonator on the end of the stock exhaust. They run round $100 for it.

I like mine and glad I just did this. It is just like stock cruising around but when you get on it, it gives you a nice rumble. My wife kind of laughed at the stock exhaust sound and when I put the SLP kit on she likes it alot better now.

 

[TXDENALI]

I have installed the GM performance (Sport) installed on my 10 Denali, it sounds really good. If I were to go and buy another exhaust I would have gotten the Touring model. I picked this up for 350.00 shipped so it was hard to pass up!

 

[stevek]

I bought the MBRP from someone on here and it sounds GREAT. The person I bought it from said he called MBRP and swapped mufflers for a quieter one, so might want to talk to MBRP before you buy.

 

[dogger7]

I have a MBRP installed on my Denali

 

[Big Buttons]

I have a flomaster super 44 on my truck with the tips comming out the side before the tire and mine isnt that much louder at idle and the drone isnt that bad but when i get on it, it really screams.

 

[Davey]

Thanks for the post... keep them coming... still torn, sound clips just dont give the justice.

 

[07Burb]

I have a flomaster super 44 on my truck with the tips comming out the side before the tire and mine isnt that much louder at idle and the drone isnt that bad but when i get on it, it really screams.

Do you have sound clips of what it sounds like? Pics of the setup?

 

[DUKES]

I have Magnaflow catback on my 08 Denali... Love it

 

[Zed 71]

Other... The Corsa mufflers will provide good outside sound and be quiet (no drone) inside. As for performance and better mileage, it will be minimial and similar with all flow thorugh types (without baffles).

BTW, I have the Magnaflow and there is drone at ~2,500 to 3,000 rpm. To me it sounds great inside and out, and I do not mind the drone.

 

[07Burb]

I have had Flowmaster on every single truck I've owned and love it but for the Burb I'm thinking about going a different route just to change it up a little bit so I was thinking about Maganflows. Do Magnaflows have different levels of mufflers like Flowmaster does with the 70,50, and 40 series mufflers? (Obviously, they offer more than that but wanted to simplify my post a bit)

 

[jimw]

MBRP on my Escalade ESV. I'm please with it besides a little cabin nose/vibration during takeoff at 2300 RPM.

 

[doubletapdrew]

I don't know if magnaflow's cat-backs have different muffler options but they have different mufflers if you are going to build your own system. That's the brand I had on my 92 Yukon (5.7L) and 02 ext. cab (5.3L) and I loved both of them. Very deep and mellow at idle with no drone on the highway but sounded ferocious when you nailed it.
The Yukon had a flowmaster on it before and I much preferred the magnaflow.

I don't think you'll pick up much power on an 07 denali with a cat-back though. The factory exhaust is quite large and appears to be mandrel bent. You'll change the sound though. Headers would be a better route for more power methinks. I've been considering OBX headers since they are $500 versus $1,000+ for the other brands, and they are stainless. The problem is I can't seem to find many reviews or before/after power measurements on the 6.2L.

 

[stevek]

I don't know if magnaflow's cat-backs have different muffler options but they have different mufflers if you are going to build your own system. That's the brand I had on my 92 Yukon (5.7L) and 02 ext. cab (5.3L) and I loved both of them. Very deep and mellow at idle with no drone on the highway but sounded ferocious when you nailed it.
The Yukon had a flowmaster on it before and I much preferred the magnaflow.

I don't think you'll pick up much power on an 07 denali with a cat-back though. The factory exhaust is quite large and appears to be mandrel bent. You'll change the sound though. Headers would be a better route for more power methinks. I've been considering OBX headers since they are $500 versus $1,000+ for the other brands, and they are stainless. The problem is I can't seem to find many reviews or before/after power measurements on the 6.2L.

The stock exhaust is a 3.5" pipe. It appears mandrel bent to me too, but some of the bends crimped and probably ended up restricting airflow. My MBRP looked flawless in that aspect, sounds better too.

 

[TahoeZO6]

Maybe look into the SLP resonator delete pipe and tip. It does give you a deeper and loader sound. It helps also because it eliminates the resonator on the end of the stock exhaust. They run round $100 for it.

I like mine and glad I just did this. It is just like stock cruising around but when you get on it, it gives you a nice rumble. My wife kind of laughed at the stock exhaust sound and when I put the SLP kit on she likes it alot better now.

Do you have any vids that you can show us and/or make for us, so that we can hear the difference?

Thanks!

 

[Zed 71]

IMO just removing the resonator is still too quiet, just barely noticable.

 

[stevek]

I'll upload a clip of a short vid I took last night... just has some WOT and idle from the interior

---------- Post added at 02:56 PM ---------- Previous post was at 02:46 PM ----------

http://rapidshare.com/files/442590812/IMG_3231.MOV

 

[Garret813]

I'm in the same position regarding exhaust systems. So many choices out there I'm still not sure which one to go with. Haven't seen many of y'all talking about SLP Performance. Anyone ever try their catback system?

 

[shundal]

i have the gibson on my 07 tahoe and there is absolutely no drone at all. It sounds great inside, barely louder than stock, but outside and when you get on it it sounds great.