Thread: n/a gp gt need some suggestions

HV3 and Tune and Down Pipe and Cross over and Plog and Turbo and Top Swap and Ported TB and Cam and Rockers

do you want to spend <5

do you want to spend >5

how much?

#1 HV3 insert from ZZP, it’s the best "easy" mod I know of for a N/A GP. It is easy to install and gives a very noticeable HP gain above about 4k. The only down side is it costs $200.

#2 A tuned PCM, there have been a hundred threads on which ones are “good”. But honestly with an N/A engine the differences are probably very minor. Just be aware that with a tune comes the need for premium gas. Also, all/most of the standard tunes assume you have gone to a 180F t-stat. But IMHO I’d pop for the stock t-stat option for the tune. But again, pros and cons between t-stats is another age old discussion.

#3 Do more exhaust work: a U-bend delete and have your front exhaust manifold ported or install the PLOG from ZZP.

If you get all three done and want more, I’d look to the valve train.

well my car ran a 16.5 stock i did down pipe plog hv3 and a cone filter and ran a 15.4 but if you have tune u could get 15-15.2 time which is not bad

Originally Posted by nascartech

well my car ran a 16.5 stock i did down pipe plog hv3 and a cone filter and ran a 15.4 but if you have tune u could get 15-15.2 time which is not bad

thats pretty impressive. you dropped more than a second off your et with some exhaust work and an hv3

Still slow IMO. Sell your MSD coils and go back to stock so you can afford some mufflers. I'm sure your car doesn't sound good at all with one glasspack and no mufflers.

MSD coils are a waste of money when the stockers provide more than enough spark.

As for performance gains. Do a top-swap or go Turbo because no matter how much you mod a GT motor it's still a GT & still slow until you boost it.

I'm not trying to disappoint or pick on ya I'm just stating the truth and giving you options.

ya i was surprised i picked up over a second im gunna get an overkill ecu and i have l67 tb and injector wich i got for 30 bucks its nice when u car run with a mustang and u have a v6 lol

here would be a good start:

http://www.grandprixforums.net/f49/g...8-a-29922.html

Originally Posted by suprchrgd

here would be a good start:

http://www.grandprixforums.net/f49/g...8-a-29922.html

Sorry for the thread jack but I want your car.

Kthnx

Originally Posted by Poil336

agree with blue. i also posted a link to your for sale thread in a different guy's thread asking more or less the same thing

thanks...