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Which Grand Prix to buy?

also if i can get back out to the track, i plan on going 13's with intake and headers. might be a 13.99 but its got it in it. a 3.4 set up is gonna do 13's pretty easily.
 


so a 3.4 pulley would require minimal tuning? why not go 3.2 or so? Im just wondering. When do these things need larger injectors?
 
why larger injectors?? to squart more fuel out. a 3.2 pulley requires more breathing of the motor to run safly ie, rockers or cam, or colder air, intercooler. the 3.8 motor is not all that good with moving around air and all the hot air a roots style supercharger throws in a motor will be disasterious, knock like crazy and eventually chip/blow pistions.

3.4's can be run with canned tunes. so yes minimal tunning, not every car but most. that is also with supporting mods tho.
 
really, the reason from droping pulleys is to catch up on the boost that you lost with better flowing mods ie headers, rockers, cam. its not really to build extream amouts of boost.
 
these cars run best in the 13 psi range, but to get there you need a good amount of parts into the car.
 


nice thanks for answering my question.

Someone else said "why larger injectors" and they obviously didn't understand my question. I was wondering at what about whp do these cars max out the injectors. I can go roughly 400 whp on my T/A is why I asked. Not even sure what size stock injectors are on the newer GTPs
 


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