I finally got a boost gauge, and i hooked it up, went out to run my car to see what im running for boost and found out i get a boost pattern from just starting out is 7-6-7, that is when i start out in first gear and run it out through all the gears, but if i start in second and run it out when i start at 2500 rpm, i get a boost pattern of 10-3-5. If someone could give me some ideas it would be a great help. I never get 10 psi in first gear, but if i am in 2nd or 3rd, i can get 10 psi.

 

You should test your boost pattern in third gear. Start from 2500 RPM and then go WOT all the way to 7500 RPM. That'll give you the boost pattern. Running through second and first don't work as well. DO realize that 7500 RPM in third will take to over 80 MPH.

 

I switched around my two connectors, and can get 10 psi, in first gear all the time now, but as i switch into twin turbo, my boost goes to 5 and fades away to nothing as i get into higher rpm.

 

I have the same problem!!!!!!! I think that I might have a vaccum leak or a stuck check valve or something. Please someone has to know whats wrong I wanna go fast

 

"but as i switch into twin turbo, my boost goes to 5 and fades away to nothing as i get into higher rpm."
i have an identical prob....i need help on that currently i am doin vacume hose change to see results to then trouble shoot from there?v my boost is wack in first gear car doesnt feel that quick it goes to redline but bosst stays at 5-9 psi the whole way but in 2nd-5th i get too much damn boost??


could it be cold weather? if so i am moving to CA just so that i can drive my freakin car without probs?

 

Ok after i switched the two electrical connectors around, i got a boost pattern in 3rd, it is 10-7 and goes down to 5-6 at red line. Also if im in 1st gear and i run my car to red line, and shift after i shift i only get 3 psi, im wondering about this too.

 

when its cold the air is lots more dense and the stock ecu doesnt know how to map it or adjust well and the car goes haywire

can this be happenin?