Boost Spike

[blacksix]

What would cause a boost spike on a dead stock setup? Shoots up to 17 or 18 psi in first, then settles to 14 psi, then spikes on each shift to 16 or 17 psi.

 

[WSLN 6]

I guess I should bring some tools to Lethbridge then? :biggrin:
What are you running for boost control these days? Need me to bring my grainger valve along? I never had 1psi of boost creep or spike ever with it, as long as the wastegate hole was big enough.

 

[blacksix]

Actually working on a buddy's car with a stock setup.

Bring the Grainger, though, maybe would be better than the RJC. I get no spikes, just lag, but I think it's mainly due to exhaust leaks. Hopefully shouldn't need any tools . . . maybe a hammer just in case :biggrin:

 

[blacksix]

cricket cricket

 

[bluehair]

id like to know this as well. mine does the same thing...

 

[grandnat86]

mine did the same thing and i changed the turbo and went with a rjc boost controller and now it's rock solid.

 

[hufsredo]

What would cause a boost spike on a dead stock setup? Shoots up to 17 or 18 psi in first, then settles to 14 psi, then spikes on each shift to 16 or 17 psi.

If you have'nt already, check the small lines that lead to the waste gate actuator and the boost controll solenoid, for kinks/restrictions.

 

[blacksix]

If you have'nt already, check the small lines that lead to the waste gate actuator and the boost controll solenoid, for kinks/restrictions.

New.