Low Boost

[Quisp]

I'm not getting over 16.5 on my fist. Uninstalled AP , pressurized from hot pipe to cold side hose holds 10 psi , loosened and tightened all clamps. Surges at 2500 rpm steady throttle. Can this be diagnosed through logging ? I have GFB DV+ and removed and inspected it. Bad wastegate actuator or boost control valve ? Dealer service dept says it's meeting all demands from ecu. Won't even break tires loose.

 

[draxxus131]

Does the brass piston for the GFB dv fall into place, or does it take a bit of effort to seat it? If it falls in place you have a knockoff! I ran into a similar issue.


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[GAbOS]

The AccessPort has a gauge for clutch sensors. If one is off the ECU will imp boost. I accidentally knocked one out (there are two that each read 50% of the throw) while working under the dash.

 

[Quisp]

Clutch switch reads out good. I bought the GFB from rally sport it's been on for at least 6 months and been fine. Adam looked at the logs and has suggested maybe bad coil pack . Have thrm on order. Thanks for the suggestions .

 

[Quisp]

Fixed . it was diverter. Not sure the GFB was part of it but there was a domed metal piece with a hole at the tip loose . I left it out but problem persisted . looked like off tip of actuator. Thank you Adam for looking over Adam and CMZ builds for diverter.

 

[Quisp]

Found problem with DV+. The plunger o ring is gone. I'm sticking with the replacement stock diverter from England.