Headers.

**GTP GTP GTP** · 02-01-2012

So I just got my gtp a couple, of weeks ago. And have a few questions.
1. how much horse power can i gain from headers and a down pipe?
2. if i change to a 3.4 pulley. What changes will need to be done. fuel, intake etc?
3. This is the final thing i would be doing, suspension. What brand or type for optimum performance?

Thanks,
GTP GTP GTP.

**dsmuts** · 02-01-2012

http://www.grandprixforums.net/safel...car-17482.html

read this

**Austins01GP** · 02-01-2012

welcome! ^ read that link
as for the down pipe the headers will take car of that so no need to worry about a down pipe
and you will see quiet a bit of a power increase with headers, tune, intake, 3.4
the stock fuel system is good for what your lookin at

**GTP GTP GTP** · 02-01-2012

wow very informative thank's for the help!

**Austins01GP** · 02-01-2012

that why blue took all that time to write that thread!
good luck with the mods
any pics of your new car?

**z3r0** · 02-01-2012

I swapped out the downpipe for the headers so I wont bottom.

Android Fire

**GTP GTP GTP** · 02-01-2012

I will post pics soon just have to clean it. but its 4 door white leather heads up, which is the best thing ever invented haha!!. And that is the best post i have ever seen. I will keep u posted.