prolly a newb question... exhaust help

GTO21 · 12-29-2006, 09:59 AM

just bought my 04's GTO for my 21st B-day

and i was wondering if a straight 2.5 or 3 inch exhaust would be a good idea. Better yet is that a good 1st mod?
Also why does my 1st to 4th gear light come on and what does it mean?
Is there a upgrade path that i should follow?
what is a good tunning device?(located in GA)

GTO21 · 12-29-2006, 10:00 AM

one more question do you guy drive with traction on or off? do you race with traction on or off?

nagoat · 12-29-2006, 10:08 AM

welcome.

most guys go with a cai/exhuast mod first with a tune.
1-4 skip shift is designed to save fuel (?!) you can eliminate it with a plug in fix or some tuners do it. t/c will cut power when wheel slippage is detected.
do a thread search on exhaust you will find much valuable advice and opinions.

nagoat · 12-29-2006, 10:10 AM

diablosport/predator
slp/diablosport plug in tuners seem to be popular

GTO21 · 12-29-2006, 10:42 AM

so the predator is prolly the 1st thing is should get?
Also just help me out a little by letting me know if the straigh pipe is a good idea or not

b_a_betterperson · 12-29-2006, 01:11 PM

Straight pipes are OK -- but you'll get some popping and it's loud as hell under heavy throttle. That said, it really sounds cool at idle and isn't bad at all under most circumstances.

Look at it this way, you can try it for something like $100 installed -- and if you don't like, get rid of it.

GTO21 · 12-29-2006, 05:21 PM

Yeah i heared it but what about the HP should i expect and increase. I would do either a 2.5 or 3 str8 no resenator or cat and i don't know if i would leave the muffler. Probably leave the muffler, should i do 2.5 or 3 and what kind of hp gain/loss should i expect.

Route 66 · 12-29-2006, 11:42 PM

Best bet for now if thats the only mods you will be doing for awhile.......get a set of long tube headers, a cai and a Predator tuner. The tuner will have a performance tune you can install and will also eliminate the skip shift. It should net you about 25hp. Just adding a cat back will gain very little hp if any.

GTO21 · 12-30-2006, 09:24 AM

Yeah i know the catback don't do much, but my question is. If i had installed a straight pipe and just run it without cat and without resenator would that help?

fattirewilly · 12-30-2006, 09:32 AM

Quote:

Originally Posted by GTO21

Yeah i know the catback don't do much, but my question is. If i had installed a straight pipe and just run it without cat and without resenator would that help?

Don't know how much it would help, but it would be loud at cruise speeds and attract the attention of local law enforcement, even when you're moderately getting into it.