Thread: Bought a 05 GTP, have some questions

1. Where have you been searching that says the cold air intake adds 20 hp and the exhaust adds 15? Those 2 mods at the max might give you 5 more hp.
2. Most aftermarket pcms will kick the fans on at 185ish instead of the stock 213* and they also keep the fans on after the car is shut off, that is the easiest way I can think of.
3. I wouldn't run anything less than 91, especially if you are unsure of what mods have been done to the car.
4. Do you have any humming or any weird noises in the sound system?
5. You can use whatever oil you want. There is a few threads talking about oil search and read them.
6. Firestone or Bridgestones. Stay away from Goodyears.
7. Don't jam on the gas, practice easing into the gas then going wot till you get a feel for what works best for you.
8. Yes as long as they are out of a 04+ gp they will bolt right in.
9. Again search the forums or google or youtube tons of info on doing this.
10. Probably not should probably take less than 30 min
11. I haven't no, but from what everyone else that has done it says they make a world of difference, and it looks pretty easy to do.
12. These are a lot of inexpensive mods that can be done search the forums, look at others rides, read stickies, there is one for mods that cost less than $50.

Originally Posted by slick2500

1. Where have you been searching that says the cold air intake adds 20 hp and the exhaust adds 15? Those 2 mods at the max might give you 5 more hp.

Well don't forget he did mention headers, not just a cat back. So that's more than 5 combined.

9. I have painted calipers on my car. It's not hard, but time consuming depending on how good of a job you want to do. Since you only see the outer and top part, some people leave them on the car (on the knuckle) and just tape everything off, prep and paint. I removed all 4 calipers, and brackets and scraped, wire brushed, and cleaned with brake cleaner before applying 4-6 coats. It's holding up great so far. My only regret is that I didn't get 100% of the old paint off first, some was on there good so I left it, I should have used an angle die grinder and a scotch brite pad on it. (if you remove all calipers, it's a good time to do a brake fluid flush)

12. http://www.grandprixforums.net/ultim...0-a-49055.html
^ This is a decent list, there are many that should have been added to it but I'm not sure if the user is still active or not. The posts below suggest more things. (Let me say trying to find that post was absolutely impossible using the forum search. I spent 5 minutes and couldn't find it. I typed the same stuff into google and bam the first link there it was.)
http://www.grandprixforums.net/safel...0-a-67580.html


13. This is only true in the case of a bit of modding due to be being supercharged. At the time, the 3.8 SC made about as much as a small V8 of its time in 98-05.

Also since you just got it, maintenance is a great place to start, that can give a bit more HP and better mileage.