: WTB GMPP Exhaust



cadillac94pimpin
04-21-10, 03:58 PM
I think I am ready to pull the trigger. Anyone have one for sale?

Also, could I have an exhaust shop just weld up some mufflers and tips
without voiding my GMPP warranty?

Back when I was looking for exhaust for my fleetwood I was thinking of
Spin Tech mufflers. They sounded so mean with LT-1's.

CIWS
04-21-10, 05:41 PM
If looking new I'd say try Luke at Lindsay Cadillac (one of the forum's vendors).

Luke Butler
Lindsay Cadillac

(703) 647-8670
lbutler@lindsaycadillac.com

cadillac94pimpin
04-22-10, 10:45 AM
I was looking for a used one because my funds are tight. I called The Gm protection plan they said I can put any exhaust on there and it will not void the warranty. I guess I should have asked about intake as well even though I already have that.

Anyone have an exhaust system who lives in South Florida I can hear?

I am debating if I should go to my exhaust guy and ask him what type of setup he can put together instead of Corsa or Borla.

I dont think Flow Master 40's would sound good.

Anyone remove the cats or gut them?

Off topic but anyone have a stage 2 intake for sale to?

Cataract
04-22-10, 11:59 AM
There was a used corsa and stage 2 intake for sale together on Ebay earlier this week.. still might be up there. They looked kinda beat up, but if u can get it cheap, it could be worth it.

cadillac94pimpin
04-22-10, 12:38 PM
There was a used corsa and stage 2 intake for sale together on Ebay earlier this week.. still might be up there. They looked kinda beat up, but if u can get it cheap, it could be worth it.

Yeah I saw that. I asked if he would sell seperate. I just wanted the stage 2 intake from him.
Im not sure If I like the corsa sound. I need to hear them each in person

Cataract
04-22-10, 01:21 PM
I got the corsa, I am very happy with it. I was a bit worried it would not be deep enough sounding, but it really sounds good. If I need more sound later, I can drop an x-pipe in. The youtubes dont really do anything justice.. the corsa exhausts on there all sounded different haha

I never heard another exhaust on the car.. but I rarely see other sts-v's period.

cadillac94pimpin
04-22-10, 01:52 PM
Yeah I noticed that they did all sound different. Well I got a dscount quote from a chevy dealer down the street 960 plus tax for the gmpp.
Its so expensive ahhhhhh. Im just tired of the quietness you know.

CIWS
04-22-10, 02:26 PM
The GMPP should be a full cat back exhaust vs Corsa being mufflers only. I realize you may only want mufflers though.

cadillac94pimpin
04-22-10, 03:00 PM
The GMPP should be a full cat back exhaust vs Corsa being mufflers only. I realize you may only want mufflers though.

Yeah that is one of the reasons why I wanted the GMPP.
What is the stock pipe dia 2.25 or 2.5? Is the gmpp 2.5?

I was thinking of having mufflers and tips welded up there to save on cost
and possibly get a louder exhaust tone.

I want mine as loud as I can get it. My fleetwood has flow master 40's
and gutted cats it almost sounds like it has a cam in it.

Cataract
04-22-10, 03:45 PM
Yea the way I figured is that 90% of my reasoning to get an exhaust was sound and looks.. the performance gain is minimal for any system.

I ended up paying for 2 hours of labor trying to get my Corsa welded on.. If the GMPP exhaust is an easy install, that could be coming close to covering the difference.. But since that guy already had the ebay one on his car, it could be an easy install?

cadillac94pimpin
04-22-10, 04:20 PM
Yeah I think a new corsa system has to have the hangers modified. I think Im just going to go with the gmpp.
Although, I would love to try something custom. Ive heard 3" pipe is good for a blown setup.
Stock exhaust seems like its being choked out. I may take it to my exhaust guy and see what he can envision.
He does not have a manderel bender though.

silverws6ta
04-22-10, 08:40 PM
The GMPP system is a complete bolt on -- Lots of pieces; X pipe; lots of adjustments can be made.. Has a deep, throaty growl at WOT.. Haven't met a person yet that didn't compliment on it. However, the N* is still quieter than my Escalade truck with GMPP Performance Exhaust.. then again thats like a water main for an exhaust on the 6.2 :)

http://i309.photobucket.com/albums/kk366/silverws6ta/IMG00833.jpg

http://i309.photobucket.com/albums/kk366/silverws6ta/IMG00832.jpg

CIWS
04-23-10, 07:38 AM
I get many compliments on the sound of the car, most of the time is when I hit it to WOT as it's going away from them. Literally having people call me on the cell saying how good it sounded as I was leaving. I've never regretted getting the GMPP.

cadillac94pimpin
04-23-10, 12:38 PM
Sounds like im going to be getting that one. What are those chambers by the Xpipe?
I wonder if the muffle sound at all.
Anyone ever weld in straight pipe instead of the cat? Or high flow cats? I live in Forida no emisions. If there is an 02 after the cat I guess I would have to delete it out of the PCM

Im still going to check with my exhaust guy just for fun. A custom 3 inch system would be pretty nasty I think. Just would have to decide on mufflers if it's possible.

Cataract
04-23-10, 01:04 PM
I think custom would be fun, def cheaper too.. if your state does not required to have cats.. dont!

cadillac94pimpin
04-23-10, 05:16 PM
Redxped your PM box is full it wont let me reply.

PGA2B
04-23-10, 07:05 PM
I am doing a set of Magnaflow 14326 mufflers, double wall slash cut tips, and a 10791 2.5" Magnaflow X Pipe. They are sitting in my garage waiting to get put on.

CIWS
04-24-10, 10:25 AM
I think custom would be fun, def cheaper too.. if your state does not required to have cats.. dont!

I believe all states require cats on vehicles that were originally fitted with them and running on public roads. If you run without them or modify them so that they are violating the OBD standards that's a federal violation as well as a state related one.

Now we all know some(one) are running without cats :) But as a technicality you would have to have them on the street in our cars.

cadillac94pimpin
04-24-10, 02:42 PM
I am doing a set of Magnaflow 14326 mufflers, double wall slash cut tips, and a 10791 2.5" Magnaflow X Pipe. They are sitting in my garage waiting to get put on.

Are you just welding them up to your existing piping?
Will the maganaflow xpipe fit?

I am going to see what my options are when I talk with my guy.

3 inch cat back with spintech mufflers would sound amazing.
Plus no one has them.

Spintech is one of the best flowing mufflers made.



I know no cats is very illegal and a hefty fine. Luckily mine are gutted on the fleetwood so no one can really tell.
I have never been pulled over for my exhaust being too loud in my car or on my bike.
My bike has a full exhaust system headers,xpipe and mufflers. They are rated at around 105-110 db


http://www.spintechmufflers.com/

PGA2B
04-24-10, 06:29 PM
Are you just welding them up to your existing piping?
Will the maganaflow xpipe fit?

I am going to see what my options are when I talk with my guy.

3 inch cat back with spintech mufflers would sound amazing.
Plus no one has them.

Spintech is one of the best flowing mufflers made.



I know no cats is very illegal and a hefty fine. Luckily mine are gutted on the fleetwood so no one can really tell.
I have never been pulled over for my exhaust being too loud in my car or on my bike.
My bike has a full exhaust system headers,xpipe and mufflers. They are rated at around 105-110 db


http://www.spintechmufflers.com/

I am using the factory pipe as it is 2.5" Mandrel bend. I am replacing the factory resonator with the "X" pipe and the mufflers are 2.5". I also got 2 Vibrant 13070 60 degree T304SS elbows to match the mufflers with the factory pipes.

As far as Spintech is concerned I am just afraid they will be too loud for my tastes. I do not like the way Corsa sounds either. To me they sound a little to tinny. I know there are a lot of people that would argue with me about Corsa and Borla but hey, its my car and I want it to sound good to me. I think I am going to be very happy with the Magnaflows. The set up is the same mufflers and "X" pipe that is used on the 04-08 CTS-V.

cadillac94pimpin
04-24-10, 10:16 PM
I am using the factory pipe as it is 2.5" Mandrel bend. I am replacing the factory resonator with the "X" pipe and the mufflers are 2.5". I also got 2 Vibrant 13070 60 degree T304SS elbows to match the mufflers with the factory pipes.

As far as Spintech is concerned I am just afraid they will be too loud for my tastes. I do not like the way Corsa sounds either. To me they sound a little to tinny. I know there are a lot of people that would argue with me about Corsa and Borla but hey, its my car and I want it to sound good to me. I think I am going to be very happy with the Magnaflows. The set up is the same mufflers and "X" pipe that is used on the 04-08 CTS-V.

Yeah thats what I want to loud. I do like the borla sound but im afraid it will be to quiet. So where are you geting your xpipe from and are you sure it will fit? What tips are you going to go with?

PGA2B
04-24-10, 11:19 PM
Yeah thats what I want to loud. I do like the borla sound but im afraid it will be to quiet. So where are you geting your xpipe from and are you sure it will fit? What tips are you going to go with?

I am a Magnaflow dealer and employee purchased it from my Magnaflow Rep with the Mufflers and Tips. The tips are Magnaflow 35121's. And Yes I am sure the "X" pipe will fit with little if any modification. The exhaust shop had my car on the lift to eyeball the install. They do not have a Mandrel bender so that is why I got the 13070 Vibrant pipes.

PGA2B
04-24-10, 11:22 PM
Its all sitting in my garage currently waiting to be put on. I should have it done in the next week or two.

CIWS
04-25-10, 08:05 AM
Please get us some video :D If possible with the car going by vs just sitting in the driveway rev'n.

cadillac94pimpin
04-25-10, 02:35 PM
I am a Magnaflow dealer and employee purchased it from my Magnaflow Rep with the Mufflers and Tips. The tips are Magnaflow 35121's. And Yes I am sure the "X" pipe will fit with little if any modification. The exhaust shop had my car on the lift to eyeball the install. They do not have a Mandrel bender so that is why I got the 13070 Vibrant pipes.

That's nice! It's always good to know someone. :thumbsup:So since you already did some of my leg work what was the part number for the x pipe?
Was it that universal one they sell on summit?
Should I use those pipes you are reffering to the Vibrant pipes?
Where would I get them from and would you know what muffler offest I should need? I will be asking my exhaust guy all these questions tommorow morning just want to get a jump on my research.

Thanks for all your help!!!!

Im looking forward to having the lodest lac in my area besides my fleetwood :)

PGA2B
04-25-10, 09:44 PM
Here are the part numbers.:thumbsup:

(2) Magnaflow 14326 mufflers
(2) Magnaflow 35121 double wall slash cut tips
(2) Vibrant 13070 (couldn't find anyone else with a 60 degree elbow)
(1)10791 2.5" Magnaflow X Pipe.

I would suggest using the Vibrant pipes or someone elses unless your exhaust guy can do a mandrel bend. If you use 2.5" and do a crush bend it gets smaller than 2" at the bend which is more restriction than I wanted.



CIWS: I will try to get Video when I am done.

zcak
04-25-10, 10:58 PM
I have a custom H-Pipe and 2x 14326 mufflers installed with Corsa Double Walled tips. Sounds amazing, i get more comments on this exhaust than my full Basani exhaust on my cobra.

cadillac94pimpin
04-26-10, 11:38 AM
Here are the part numbers.:thumbsup:

(2) Magnaflow 14326 mufflers
(2) Magnaflow 35121 double wall slash cut tips
(2) Vibrant 13070 (couldn't find anyone else with a 60 degree elbow)
(1)10791 2.5" Magnaflow X Pipe.

I would suggest using the Vibrant pipes or someone elses unless your exhaust guy can do a mandrel bend. If you use 2.5" and do a crush bend it gets smaller than 2" at the bend which is more restriction than I wanted.



CIWS: I will try to get Video when I am done.

Thanks a lot! I found Vibrants website. Spintech sells those pieces but they are more money for stainless steel then the vibrants. Yeah I defenitley do not want non mandrel bent since the whole system is.

Now I just have to decide on tips. The part number you gave for your tips were with a 2.25 inlet thought you needed 2.5?

The mufflers you are getting are off set too so I guess that is what I am going to need. I will be going this afternoon and hopefully he can throw it on the lift and see if he has the same ideas.

PGA2B
04-26-10, 12:24 PM
[QUOTE=cadillac94pimpin;2224912]Now I just have to decide on tips. The part number you gave for your tips were with a 2.25 inlet thought you needed 2.5?QUOTE]

I know but I wanted the Double walled and slash cut so we are going to "Modify":devil: the tips just a bit.

cadillac94pimpin
04-26-10, 01:18 PM
[QUOTE=cadillac94pimpin;2224912]Now I just have to decide on tips. The part number you gave for your tips were with a 2.25 inlet thought you needed 2.5?QUOTE]

I know but I wanted the Double walled and slash cut so we are going to "Modify":devil: the tips just a bit.

O ok I got you. You can open up the dia of the inlet pipe with a machine I think. I saw some nice borla tips on summit.

http://www.summitracing.com/parts/BOR-20155/

They look like only the edge is stainless though. I cant be having that.

Did you figure out the max outlet dia of the tip to fit in the bumper without melting it?

PGA2B
04-26-10, 02:16 PM
Did you figure out the max outlet dia of the tip to fit in the bumper without melting it?

I wouldn't go more than 4"

PGA2B
04-26-10, 03:23 PM
They look like only the edge is stainless though. I cant be having that.

Borla 20155 (from the Borla website)Note: Products are shipped un-polished unless otherwise indicated.
Image shown may be a polished version.


That is a Stainless Steel Tip. It is just that the whole thing is not polished from Borla.

cadillac94pimpin
04-26-10, 04:06 PM
Borla 20155 (from the Borla website)Note: Products are shipped un-polished unless otherwise indicated.
Image shown may be a polished version.


That is a Stainless Steel Tip. It is just that the whole thing is not polished from Borla.

Yeah I see that. Im stuck on tip choice now ahhhhhh.
I really need to see what it looks like on the car.
I am real bad at forseeing that kind of stuff.
What made you choose your particular tip length?

I dont really mind the magnaflow tips you picked but the tips say magnaflow and no part of my system will be magnaflow ya know.

Did your exhaust guy advise you to buy those 60 degree pipes?
I was trying to explain that to my guy but I think he sort of knew what I was talking about but I guess he needs to look at it.

He said bring all the parts and we
will make it fit lol.

CIWS
04-26-10, 05:01 PM
CIWS: I will try to get Video when I am done.

Cool deal, thanks. Would like to try and get as much modification variations in video out there when we can. :)

cadillac94pimpin
04-26-10, 05:10 PM
Cool deal, thanks. Would like to try and get as much modification variations in video out there when we can. :)

Hopefully I will have a video very shortly as well.

Cant wait! :cloud9:

cadillac94pimpin
04-27-10, 10:30 AM
So I went to my exhaust guy this morning for him to check it out on the lift. First he told me my exhaust system is NOT mandrel bent.
Is this correct? When I brought up the 60 degree mandrel bent pipe he said I do not need it and that unless I have 700 hp it's not needed and it will not do anything for me. He said He would use and bend his own pipe. Do you think it's becuase he does not want to work with it?
The exhaust boxes are very small. They are 4x6x12. He also said he could cut off my stock tips and weld then on the new mufflers but I dont think I want to do that.

PGA2B
04-27-10, 10:52 AM
What made you choose your particular tip length?

Did your exhaust guy advise you to buy those 60 degree pipes?


I went with the Mangaflow because of the cost. Remember I got my stuff at Magnaflow employee purchase.

As for the 60, I did not want to crush bend a 2.5" pipe because of the restriction due to the bend.

BTW: My exhaust is factory and it is Mandrel and verified by my exhaust shop. All the bends are the same size through out the bend and smooth and round, not crinkle or crush bent.

cadillac94pimpin
04-27-10, 11:18 AM
I went with the Mangaflow because of the cost. Remember I got my stuff at Magnaflow employee purchase.

As for the 60, I did not want to crush bend a 2.5" pipe because of the restriction due to the bend.

BTW: My exhaust is factory and it is Mandrel and verified by my exhaust shop. All the bends are the same size through out the bend and smooth and round, not crinkle or crush bent.

Thanks for all your help with my questions. I do want an entirely mandrel bent system. I do not want a crush bend either I think I will just buy them any way and say put them on. Will your exhaust guy have to bend the madrel bent pieces at all? Or just cut the stock pipeing in the right place?

PGA2B
04-27-10, 02:21 PM
Will your exhaust guy have to bend the madrel bent pieces at all? Or just cut the stock pipeing in the right place?

Should not have to bend it anymore. We will just cut the factory pipe where it needs to be (the Vibrant pipe will need to be trimmed also) and weld the muffler to it.

timinfla2
04-29-10, 08:03 PM
Stupid question, but Corsa must have dozens of variations on different catback systems for different makes/models of vehicles.

If I wanted to check ebay and search Corsa, many irrelevant listings come up - is there a specific model number that the GMPP setup uses?

Thanks,
Tim

CIWS
04-29-10, 09:28 PM
For our cars Corsa doesn't offer a cat-back. You can get the mufflers and have them welded in.

timinfla2
04-29-10, 10:26 PM
Ah, thank you - what's our best option for a cat-back? Is there a bolt on option? Is that the GMPP offering?

Thank you,

-T

jedhead
04-30-10, 12:05 AM
I installed a Corsa axle back for the STS V8
http://www.corsaperf.com/product_locator.aspx?make=6&model=9&year=2007
The hanger had to be bent some so the exhaust tips would stick out. Otherwise the installation is clean.

http://www.supermotors.net/getfile/781173/original/copy-of-dsc_0064.jpg

Bob

timinfla2
04-30-10, 11:47 AM
Must've been a Borla setup that I saw that was GMPP - does that sound right?

jedhead
04-30-10, 01:33 PM
Borla made the GMPP for the STS and STS-V

Bob

timinfla2
04-30-10, 10:16 PM
Have you guys ever heard of Gibson Exhausts? They're all over the place on ebay but I've never heard of them...

http://cgi.ebay.com/ebaymotors/Gibson-Exhaust-System-Cadillac-STS-V-4-4L-Supercharged-/160415012750?cmd=ViewItem&pt=Motors_Car_Truck_Parts_Accessories&hash=item25597ad78e

Seems pretty inexpensive...

PGA2B
04-30-10, 10:43 PM
I sell Gibson and they are ok but loud and low quality.

timinfla2
04-30-10, 10:46 PM
I sell Gibson and they are ok but loud and low quality.

I was afraid of that - glad I didn't pull the trigger. I'll continue to look for a good brand at a good price...

silverws6ta
04-30-10, 10:51 PM
Have you guys ever heard of Gibson Exhausts? They're all over the place on ebay but I've never heard of them...

http://cgi.ebay.com/ebaymotors/Gibson-Exhaust-System-Cadillac-STS-V-4-4L-Supercharged-/160415012750?cmd=ViewItem&pt=Motors_Car_Truck_Parts_Accessories&hash=item25597ad78e

Seems pretty inexpensive...


I sell Gibson and they are ok but loud and low quality.

No offense to PGA2B; but I typically associate with the 'ricer' crowd.. Thats usually when I hear that name referenced.. :hide:

T304 is my minimum standard for an exhaust system/mufflers.. I am a Borla convert, after installing the GMPP (Borla produced) on my V.. I switched my SLP Louda$$ -- I mean Mouth on my WS6 to the non adjustable, slant tip exit on each side.. and never looked back!!

When I was 21 and first had the car.. it was great.. now I actually like to hear the radio.. the intake.. and not sound like redneck heap coming down the road..

timinfla2
05-01-10, 08:25 AM
Yeah, I get it - I guess quality costs. If you're going to have a good aftermarket exhaust, it looks like you've got to be prepared to drop a grand or so on it. No shortcuts here I guess.

PGA2B
05-01-10, 09:42 PM
No offense to PGA2B; but I typically associate with the 'ricer' crowd.. Thats usually when I hear that name referenced.. :hide:

None taken. I said I sell Gibson not that I like it:thumbsup: On a truck its fine. And SLP OMFG that is LOUD!

youknooow
03-06-11, 04:39 AM
I was sold on Corsa until I heard this :http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DvbaIgq Z_Xcw&h=80aa3JdANdve3D37jV5ijS2o7Lg \

its a youtube clip of the gibson exhaust on a STS-V, my favorite (sound wise) among the Corsa, Magnaflow, Borla. I'm reading through the forums to see what fellow V owners have to say... Are you familar with the gibson setup on the sts-v?

Psycho-albanian
03-08-11, 06:28 PM
I have borla's on mine and i get compliments on it all the time. I paid 1300 for my borla's and love them.