rx7FDrider

iTrader: (16)

hi guys,


i have a problem... when i bought my car (not long ago) 2nd turbo wasn't kicking in. so i decide to redo the vac lines cause my friend said it might be a vac lines issue.

well... now i think that problem is solved after redoing the vac lines... but for some reason i don't get 10 psi of boost at 3k... instead on 1st and 2nd gear i dont hit 10 psi until 6k rpm

for 3-4th gear... i get 10-8-10 if i WOT around 4k rpm.

what could be wrong? i feel like there is a leak somewhere?!?!! where do i start looking?

Mahjik

iTrader: (1)

Start with the turbo control system:

http://www.autosportracetech.com/RX-...leshooting.htm

From the link:

"The Turbo Control Solenoid / Actuator is one of the more complicated actuators as it requires both vacuum and pressure to operate properly. This actuator is controlled by two solenoids, (both are wired together to the one ECU output) one solenoid applies pressure to one side of the actuator and the other applies vacuum to the other side of the actuator. With pressure on one side and a vacuum on the other side of the actuator, the speed of the actuator is improved. A typical problem is loss of Secondary boost in 1st or 2nd gear at 4,500 RPM, but reliable operation in other gears. This points to one side of the Turbo Control Actuator not getting it's pressure/vacuum, so it will still operate but not quickly enough."

rx7FDrider

iTrader: (16)

thanks. i'll start w/ that. if the restrictor pills is off by .03, would that be a problem on stock config?