boost problems
05-18-11, 10:34 AM
#1
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boost problems
i have a sc300 with a stock twin turbo 1jz with a manual boost controller, the car is running 15psi n i what to bring it to 12psi but my boost controller is at the max low, ideas?
Last edited by ddrsquad; 05-18-11 at 12:50 PM.
05-18-11, 11:49 AM
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Take off the manual boost controller and hook up a vacuum line straight to the wastegate, and run the car, if it stays at 15# that means it has a 15# spring in the wastegate. Which means that's the lowest you can run.
05-18-11, 01:20 PM
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If it's stock and it's doing 15 with the manual boost controller all the way closed, you have a vaccum leak somewhere from where you get your vacuum signal all the way to the wastegate. or malfunctioning boost controller. That's why I said to eliminate the manual boost controller completely first to check stock boost.
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