Whats up guys new to the whole Grand Prix world. Have always liked them and finally got me a 4 door GTP this past Feb. Its got 142xxx on the clock and was runnin like a champ until about 2 days ago. It was leaking coolant from the water pump so I replaced it and since I had it apart I replaced the belts and spark plugs as well. After that the car is running fine, idles fine but just when I get on it for it to boost up it like sputters and doesnt feel like its making any boost even tho my gauge inside says it is. Idk what could be the problem the only thing different are the spark plugs oh and I changed the oil I highly doubt the oil has anything to do with it. Well any help would be greatlly appriciated thanks.
heres some pics of the car.
