What difference custom exhaust did.

[Markgase2000]

I have straight pipe no cat no res exhaust 2 1/2'' Pipe upgrade and ported intakes and port polished exhaust no cylinder porting. I also use a Jet PCM and use a 180'c thermostat.
I spent 3 years playin around with my exhaust and intakes and I had a dyno test done with a g-force pro. The hp didnt really change much got a extra 9 hp = 179hp 4000rpms not that awesome right but it reads the torque at 271 lbs in first gear at 3750 rpms it also estimated 0-30mph @ 2.3 seconds 0-60 mph 7.3 seconds got 5.4 seconds goin down a hill! lol
I tried some other modifications before but with running risk of engine damage. The times with the jet on were 2.1seconds 0-30 mph and 6.9 0-60mph no changes in hp but it hit the torque much faster at 3500rpms and held it for an extra 500rpms in first gear. These are estimated times made by a g-force pro with a passenger riding along. After doin a few runs my times turned to crap 0-30mph in 4 seconds 0-60mph in 9 seconds. I notice this engine likes to get hot fast and it diminishes performance. The hp rating went down 20% and the torque was lost about 40% that was 34 lost hp and 80lbs of torque lost. Took about 2 hours to cool it off enough to burn for another 5 minutes of decent times then the same occurs. Since Im stayin with Natural aspiration should I perhaps look into a way of cooling my intakes and transmission so I can go for longer rips without losing power so quickly. Any suggestions? I know some of you dont like what ive done to my ga or dont think its all that great but Im looking for someone with simular intrests to help me figure this out. Im not looking for comments about my times or how it sucks. Thanks in advance.

[jasonwolffjb]

holy shit...i want that...but i too have a similar problem or will anyway you see i have around 4.5 g's to play with and its all going to my engine i want hp plus torque so far i have just about everything in mind just need to get it i got the money but i am really looking for the most important thing off all ....a super charger I NEED ONE i have a 3.4 gt im begging for help you and i have the same interests email me or IM me jason