Stock Cat Back?
05-17-2010, 01:01 PM
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Stock Cat Back? So I have an '05 GTO with pacesetter LTs w/ cat less mids, Magniflow cat back (which the previous owner cut out the mufflers and replaced with pipe), a Varram intake, and a dyno tune. I put down 393 RWHP and 400 TQ. As you see, I am running STRAIT pipe with an x pipe in there to help the noise level. Lol. I do plan on putting the magniflow mufflers put back in, but I do not have the money to spare YET. I picked up a factory ls2 gto cat back system yesterday for CHEAP as a temporary fix till I get the magniflows. The guy also gave me another cut up system which is complete minus tips. The question is..... Should I replace full cat back with stock? Or should I just weld in the stock mufflers on the magniflow system, then replace those when I get the new mufflers? Will this hurt my tune / Horse power? I don’t want to run too rich.
For the ones wandering why I want to fix the "problem" at all...... my car is STUPID loud! It is cool for a little bit, but not all of the time. So what is yalls impute?
Here is a vid of the car. my car is the black gto in the last run.
http://www.youtube.com/watch?v=puNrjZXXwGo
For the ones wandering why I want to fix the "problem" at all...... my car is STUPID loud! It is cool for a little bit, but not all of the time. So what is yalls impute?
Here is a vid of the car. my car is the black gto in the last run.
http://www.youtube.com/watch?v=puNrjZXXwGo
Last edited by SixPtSlo; 05-18-2010 at 10:22 AM.
05-17-2010, 08:39 PM
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Weld in the stock mufflers and run it. Don't need the rest of the pipes, just keep the ones you have on the car now.
As far as hurting your tune, your beating on your car more on that video that I have in the 16,000 miles I have owned mine, I better not say any more.
BTY Cheep is what a little bird does, cheap is how you bought the parts.
As far as hurting your tune, your beating on your car more on that video that I have in the 16,000 miles I have owned mine, I better not say any more.
BTY Cheep is what a little bird does, cheap is how you bought the parts.
05-18-2010, 10:54 AM
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Weld in the stock mufflers and run it. Don't need the rest of the pipes, just keep the ones you have on the car now.
As far as hurting your tune, your beating on your car more on that video that I have in the 16,000 miles I have owned mine, I better not say any more.
BTY Cheep is what a little bird does, cheap is how you bought the parts.
As far as hurting your tune, your beating on your car more on that video that I have in the 16,000 miles I have owned mine, I better not say any more.
BTY Cheep is what a little bird does, cheap is how you bought the parts.
that was uncorected
i am not realy woried my AFR with just the mufflers but what if i put the full oem catback on?
06-01-2010, 11:36 AM
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The factory 05-06 cat-back flows pretty well actually.
Until most GTOs are modified pretty heavily, many aftermarket cat-backs provide very little gain, aside from being somewhat lighter.
the biggest restriction in the factory GTO exhaust is the mid-pipes (because they neck down right before the cats) followed by the factory exhaust manifolds.
I dont think the addition of a factory cat-back should mess with your AFR or tune.
hope this helps.
--Glenn
Until most GTOs are modified pretty heavily, many aftermarket cat-backs provide very little gain, aside from being somewhat lighter.
the biggest restriction in the factory GTO exhaust is the mid-pipes (because they neck down right before the cats) followed by the factory exhaust manifolds.
I dont think the addition of a factory cat-back should mess with your AFR or tune.
hope this helps.
--Glenn
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06-06-2010, 07:37 AM
#10
The factory 05-06 cat-back flows pretty well actually.
Until most GTOs are modified pretty heavily, many aftermarket cat-backs provide very little gain, aside from being somewhat lighter.
the biggest restriction in the factory GTO exhaust is the mid-pipes (because they neck down right before the cats) followed by the factory exhaust manifolds.
I dont think the addition of a factory cat-back should mess with your AFR or tune.
hope this helps.
--Glenn
Until most GTOs are modified pretty heavily, many aftermarket cat-backs provide very little gain, aside from being somewhat lighter.
the biggest restriction in the factory GTO exhaust is the mid-pipes (because they neck down right before the cats) followed by the factory exhaust manifolds.
I dont think the addition of a factory cat-back should mess with your AFR or tune.
hope this helps.
--Glenn
06-06-2010, 10:17 AM
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Look at all of these examples.
When i was considering a catback i was told from many sources that its mainly for sound or weight reduction, and without major other motor mods that it wont add any noticeable power.
Hence why i just have dumps on stock everything lol I was just after the sound.
When i was considering a catback i was told from many sources that its mainly for sound or weight reduction, and without major other motor mods that it wont add any noticeable power.
Hence why i just have dumps on stock everything lol I was just after the sound.
