Ok, I have been searching since yesterday for topics that would give me a general direction other than main. items to look into reguarding the slowness of this vehicle.
MY SITUATION
I traded my probe gt (yea you read that right) for this grand prix "gtp". I have since taken a deeper look into this vehicle and have figured out that it isnt a real gtp. Someone has either performed a top swap on this car, or has swapped the whole motor. I dont think it matters at this point. The car runs great. No problems, hesitations, smoke, missfiring, or anything like that. Other than how slow this thing is, it seems to be an awesome car. I just got back from a few hour trip and the car gave me no issues. Other than getting beat by a newish jeep rubicon.. (embarrassing to say the least). Anywho... I was told the car has the following mods, keep in mind the previous owner swears he thought it was a gtp
-180 thermostat
-zzp 1.0 tune
-1.9 rocker arms
-crow push rods
-dynomax exhaust
-CAI
Perhaps some other things that I am forgetting to list. Once I got back into town I stopped at a gas station and removed the supercharger belt. I was told to do so by another member in my other noob thread. I thought I would have the control to keep my foot off the gas but after the jeep situation I obviously dont. Anywho.. I got to the gas station and while I was filling up ( I swear cruise ships get better gas mialage) I removed the sc belt, untill I get a set of headers and a scan gauge. The thing that made me think, when I was on my way home I gave it a 2 gear pull and I didnt notice much of a difference in the performance of the vehicle, which is odd. I would think that the motor trying to pull air past a non functioning supercharger would hinder performance greatly.
THINGS I AM GOING TO LOOK AT TOMORROW
-first I thought there could just be a gutted sc on my car. Maybe for some reason a previous owner took the rotors out. But when the car is first started the pulley turns (keep in mind the belt is removed) and when you give it a little rev it spins. Makes me think the rotors are still in the sc
-Perhaps a boost leak of some sort? there isnt a boost gauge in the car at all so I supose this is a possibility.
- I will look over the vacuum lines and see if I can find something that looks off, even though I dont have a ton of experiance with these cars.
-Or, maybe the car isnt really that slow. All I know is my probe would have spanked this thing. Ive owned one other gtp and from my understanding a top swapped car should be a tad quicker than a stock gtp, but mine has some bolt ons, and my other gtp would have owned this thing.
Sorry for the long post but I dont want to be one of those noobs that makes a crap load of threads without searching, and thats how I feel. I am not retarded when it comes to cars. Just need some direction. Thanks a ton for anyone that can help.
