Mindspin311

So Im experiencing some boost creep on my BNR Stage 2 hybrid, what should I look for as a culprit? The only thing I can think of is the wastegate/actuator. What else should I look at?

J-Rat

iTrader: (2)

Interesting... Can you describe the creep?

Mindspin311

Say Im in 3rd gear at 3500 rpm, I floor it and I hit about 7psi which seems about normal. Then once the revs reach 5500 or so I notice my boost gauge will begin to move towards the 10psi mark. Luckily my wideband is showing mid 11s so Im set with fuel, it just gets me that Im experiencing this boost creep.

J-Rat

iTrader: (2)

hmmm.. Did you shim the actuator? Thats kind of odd because I know Bryon ports the crap out of those wastegates.

Mindspin311

I havent touched it

NJGreenBudd

iTrader: (1)

yeah i thought the ported wastegate would reduce/eliminate boost creep. How is the watsegate actuator moved? maybe weak vacuum to wastegate or something, sorry if this os offbase???

Mindspin311

Ive got a vacuum line run from the pressure source at the outlet of the turbo down to the wastegate actuator.

rx7 FC TII

iTrader: (3)

you might want to contact bryan and see if he has any suggestions....i know the port on the stage 2 is 30mm