I Cant Boost over 11PSI!!!!!!!!!!!

[td06hkiko]

OK. HEre's the Problem. I used to be able to boost at 21 psi. My currents mods are. 20g, internal waste gate, GREDDY FMIC, PRofec-B, 660CC, walbro 255, SAFC, POCKETLOGGER and 3in O2 Eliminator DownPipe. I am used to Boosting at 18-21 PSI. I cannot control the boost from my Profec-B anymore. So I am now boosting at 10-11 PSI and nothing more than that. I had all of my intercooler coupling changed to PWR COUPLINGS to fix the boost leaks. I also Tightened wasted gate actuator stem and re-connected it to the Flapper door on the turbo, so there is no play on the stem. I have also checked all the Vaccum lines on the Boostcontroller and they look good. So now I try to turn up the boost on the controller and still getting 11psi. I have good spool up and good throttle response but still no Boost over 11psi? Can someone tell me if it's my Actuator or my Boost controller? I would appreciate the help.

Thanks.

 

[SlowSpyder]

maybe the solenoid for the greddy took a crap on you. If you run the pressure source to the actuator and you get 10-12 psi then it might be the greddy solenoid

 

[td06hkiko]

maybe the solenoid for the greddy took a crap on you. If you run the pressure source to the actuator and you get 10-12 psi then it might be the greddy solenoid

SO If I just bypass the boost controller and just run it to the wastegate that will tell me my solenoid is bad?

 

[SlowSpyder]

by bypassing the solenoid you should be able to boost to the spring setting on the wastegate which is probably 10-14 psi. If you boost to 10-14 psi then there is something wrong with your solenoid.

 

[td06hkiko]

by bypassing the solenoid you should be able to boost to the spring setting on the wastegate which is probably 10-14 psi. If you boost to 10-14 psi then there is something wrong with your solenoid.

ok. I will try that. I will bypass and hope that I get some some kind of positive results from it. Be back in a couple of days.

thanks

 

[td06hkiko]

Ok problem is fixed. I still went with a MBC coz the profec still kinda makes the turbo laggy. I would rather tune with the turbo's characteristics. I did not have a boostleak problem after all. It was my Sparkplug gap out of whack. It had a .32 gap when it should have had a .28. I used .28 on the gap and the car runs very stong all the way up to redline. My timming was 17 degs at the top of 6700rpm. Boost was set to 21. So before checking for boostleaks, ensure that you have your sparkplug gap set to .27-.28 this solved my studdering .