so stock, i ran a 9.2s at 76mph 1/8 mile awhile back. my 60' ft was a 2.1.
now i have a 2.85" pulley and last night the best 60' ft i could manage was a 2.34. the best 1/8 mile time i got was a 9.44s at 77mph. what the hell is going on? im doing everything the same as when i ran the 9.2. do i not have the right setup with the new pulley or something? could it be major traction problems? clutch? what can i do to fix ths? i can feel that the pulley makes a big difference, but im not seeing it in my numbers...

 

help!!!

 

with the pulley you have. if you are still running on stock injectors, you are prolly runnin lean at the top of the rpm range. ask Darksun280 for advice, he was having the same problem.

 

Yeah MinesBetter. You are running way too lean. You must get the bigger injectors(42.5lb/hr) and a reflash to tell the computer what is going on. It will make all the difference in the world.

 

ok i know where to get the injectors from, but where do i get the reflash from, intense???
BTW thanks guys, i figured it was something like this. my second gear felt really weak in the higher RPMs.

 

How much boost you seeing???

you can get a MBC and clamp the boost down a pound or 2 say your running 17psi clamp it to 16 or 15.5 to richin up the A/F you would prob make more HP up top with it then running 17psi lean

 

OMG....You're running a 2.8 without anything.....You are running lean man..Trust me...Go to the Intense Racing website. Order their fuel injectors with maf translator. Also try to order either a wideband a/f ratio gauge or get your car dyno tuned. That should richen the car up.

CTCOBALTSSS is talking about the GM stage reflashes. You could get them but they are a tad expensive.