i have a full weight 87gn.my combo is ported irons & intake stock plenum&stock throttle body with rjc power plate. 206/206 flat tappet cam.stock rocker arms.stock maf. #60injs.turbo tweak 5.7 chip precision stoc/location intercooler & 6765 ball bearing watercooled turbo.built trans with 3200l/u ptc converter.i dont have alky. at 17psi.boost at the track my best pass was 12.09/110mph.& 1.74 60ft..my tires are M/T drag radials at 18psi 295 50 16 .this is a stock suspension car on GTA rims.i dont shift the trans. i just put the trans in drive & leave at 2psi of boost. also have a reds single pump hot wired &adj.fuel press.reg...Do i need to change my plenum& throttle body over to the 70mm bigger stuff?And do i need to change my stock maf over to the bigger lt1 translater stuff? WILL i gain any performance? & at what point should i change that stuff?..Please help .
The turbo is a mismatch for that combo. I'd go for a set of heads and a 9.5" ptc even before I replaced the factory mafs. You will need alky minimum to get a lot more out of it.
Thanks so much for that advice Bison.Iwas just about to drive over to Full Throttle in grab a new Precision dog house & throttle body...money saved.So im thinking GN1 aluminums with 1.7 or 1.6 rollers to go with my small 206 cam? But razor alchy for sure & can you please tell me which ptc 9.5 to get?
Go for the aluminum ones (preferably 14 bolt) with scorpion rockers if you have the $. If you have an off the shelf ductile 206 roller I'd run 1.65 intake 1.55ex ratios. You pm or call dusty bradford on here for the converter when you're ready. You can run the 10" down to 11.0 before it will start slipping excessively but you will have potential to go a lot further with the heads if you can fuel it. it will be a custom converter. I don't like mentioning the converter configurations because it just brings up more questions and I start getting too many pm's and inquiries about it. If you order it from dusty it will be right. just let him know the combo and the boost. The plenum and tb will do nothing compared to heads and converter at this point. Just square up the intake port exit and millbout the egt tower and you will have a lot fun.
useing what you have,the car needs to come out of the hole on more boost and overall boost needs to be increased with proper fuel.a 2psi leave and 17psi overall is way to low to get a real et and mph
