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a newbie wanting to learn more.

boosting98

boosting98

New member
as some of u know. i'm fairly new to the site. and well, i'll be the first to admit, that i don't know much about my gtp. its a 98 w/ 56k miles on it. but anyways, i have some questions.

1: what size is the factory pulley on the supercharger?

2: what pound of boost do they put out stock?

3: is the slp cat back sound good?

4: what is the quarter mile on these cars stock?


and as u can tell from my questions. my gtp is stock! (performance wise)

thanks guys! i plan to learn more about modifing it, and just to represent the site!
 


1. 3.8 inches
2. normally around 7-9 psi It really does vary from car to car.
3. A lot of people tend to like it, a lot of people tend to think it's too loud. It is an aggressive sounding exhaust, maybe finding video clips of it would give you a better idea.
4. Again, this varies from car to car. Some turn a 15.5, others turn a 14.9.

hope that helps
 
sorry, 2 more questions.

1) i have a button on the shifter for the "performance shift" does this even do anything? is it just stiffen the shifts?

2) is a 3.4 size pulley good for daily driving?


thanks for the replies, btw.
 
I just got a gtp, but if my previous knowledge is correct, you need some rather big supporting mods to be able to do a 3.4, like ported TB, bigger exhaust (Headers,2.5-3in catback), etc.

and the P-shift changes the shift points for....better performance....not sure if it burns out through the gears a little longer though or changes the trans fluid pressure for firmer shifts
 


its ups the line pressure and raises the shift points slightly.

also, to run a 3.4 pulley youre going to need a bunch of supporting mods. i have the mods in my sig and im still knocking fairly bad (~5*) on the 3.4.
 
I'd hold off on a pulley and use your budget for other mods. Many new owners make the mistake of trying to get to a certain pulley size. Plenty of more important mods to make the car faster than a pulley at this point with your car. Exhaust, PCM, CAI are all things to consider first
 
There is a great thread that I and many others created for these questions. The problem is that it is on another forum (clubgp). I will post a link if this moderator allows me.

Please give permission there is a lot of info available. Thanks
 
its always better to run a bigger pulley with higher timing than a smaller pulley with lower timing and more boost. it will also feel like it runs better that way too.
 


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