GMMG, LT(with CATS)=Worth it??
GMMG, LT(with CATS)=Worth it?? Hmmm,
I have a GMMG muffler, and want to add LT, but I NEED to keep the CATS.
Will I still gain hp from the LTs even if I keep my CATS? If yes how much approx?
Thanks.
I have a GMMG muffler, and want to add LT, but I NEED to keep the CATS.
Will I still gain hp from the LTs even if I keep my CATS? If yes how much approx?
Thanks.
Yep most catted ypipes come with the appropriate highflow cats and bolt right up to the headers and the catback. You might lose a slight amount of HP using the cats, but it will be much better than stock
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Joined: Nov 2003
Posts: 6,216
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From: Wichita KS / Rancho San Diego
It will be fine with aftermarket cats, and trust me, you don't want to run LT's & GMMG without them. The loudness and rasp are unbearable. Tried it and couldn't stand it for a day.
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Verdad Gallardo Thanks for the help.
I just need to find out if I can use the hi flow cats, as I dont think they will pass our emmisions test.
I do know some friendly testers, but I will be moving abroad, and can't rely on friendly testers for long.
I will find out more about our emissions test.
Thanks again,
Paul.
I just need to find out if I can use the hi flow cats, as I dont think they will pass our emmisions test.
I do know some friendly testers, but I will be moving abroad, and can't rely on friendly testers for long.
I will find out more about our emissions test.
Thanks again,
Paul.
Launching!
Joined: Jan 2008
Posts: 233
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From: unknown
Thanks for the help.
I just need to find out if I can use the hi flow cats, as I dont think they will pass our emmisions test.
I do know some friendly testers, but I will be moving abroad, and can't rely on friendly testers for long.
I will find out more about our emissions test.
Thanks again,
Paul.
I just need to find out if I can use the hi flow cats, as I dont think they will pass our emmisions test.
I do know some friendly testers, but I will be moving abroad, and can't rely on friendly testers for long.
I will find out more about our emissions test.
Thanks again,
Paul.
11 Second Club
Joined: Dec 2007
Posts: 868
Likes: 0
From: Charleston, SC
I passed my emission with high flow cats. They still get the job done for emissions. The high flow cats just flow the exhaust better while still getting good emisions. gets the longtubes, high flowcats that should come with the aftermarket y pipe you will get with your longtubes.
I have spoke to a couple of testers, and they are not sure if the hi flows cats would pass emissions or not.
I can get the LT here really cheap, but the catted y is $$$$$$$ with shipping & taxes. Even a custom y isn't going to be cheap by the time I add the cats and labour. And it still might not pass our emissions.
Mabey I should just get a cutout. Would that gain me much hp over my current set up? (Stock header & y pipe and GMMG).
Thanks for all your input guys....
I can get the LT here really cheap, but the catted y is $$$$$$$ with shipping & taxes. Even a custom y isn't going to be cheap by the time I add the cats and labour. And it still might not pass our emissions.
Mabey I should just get a cutout. Would that gain me much hp over my current set up? (Stock header & y pipe and GMMG).
Thanks for all your input guys....
I don't know what your emissions standards are across the pond, but with the American racing LT, and catted-y (magnaflow cats i believe) I passed the emissions test, even with a misfire!
just realized i didn't explain that well... and I'm sure I'll get "flamed" for it
Michigan does not have emissions testing, I did it at a local college just for the hell of it
Michigan does not have emissions testing, I did it at a local college just for the hell of it
