What about the HP?

[Dunes2006]

Hi..i have a question.
I've just put a little setup on my 2001 gtp. I have a 3.4 pulley..180 drill stats..colder plugs..cold air intake costum..u bend delete and dynomax to the rear and a tune pcm.

My question is..how much Hp i get with that?

and can someone tell me how much if i upgrade with a 3.25?

[rocafella2032]

Not sure on HP gains, maybe about 20ish?

And your not ready for a 3.25, you need headers for sure.

Remember, how well your mods effect your car can come down to how its tuned.

[matt5112]

Not that much since you'd probably be knocking. Just get headers and then make your own CAI and then get the 3.4" pulley and a tune.

[TheOtherNick]

Probally stock or less numbers.

[Dunes2006]

Not sure on HP gains, maybe about 20ish?

And your not ready for a 3.25, you need headers for sure.

Remember, how well your mods effect your car can come down to how its tuned.

thx a lot, and for the headers,do u know wich i should go for?
one better than another?

[matt5112]

Read this about ten times: http://www.grandprixforums.net/f81/s...car-17482.html

Then read this once or twice.

http://www.grandprixforums.net/f81/h...ead-25922.html

[Dunes2006]

Read this about ten times: http://www.grandprixforums.net/f81/s...car-17482.html

Then read this once or twice.

http://www.grandprixforums.net/f81/h...ead-25922.html

thx..i'm new to the forums and don't always know where to go