Zipps

My question is how to properly set the max boost level with a manual controller. For example I normally will run the car down the highway at full throttle in 3rd gear ( and maybe 4th if I feel lucky) and dial in the boost level to 15 psi while the throttle is wide open. Now during normal driving I see those sudden and very quick spikes in boost of up to 17-18 psi immediately after letting OFF the accelerator. Are these quick spikes something that you other 951 drivers see ? Is this actually normal or do I need to re-adjust max boost again ?? Like I said with throttle wide open in 3rd boost is stable at 15 psi. ( 86 951 with API chips, lindsey dual port W-gate with manual boost controller, stock turbo)


Thanks Zippy

JohnKoaWood

I am assuming you are using an aftermarket boost gauge, and not the one in the dash?

What about your recirc valve, stock origional, new origional, or aftermarket?

Rogue_Ant

If you have your boost gauge signal from the IC piping, then that spike is normal...

Zipps

I have a dual port Waste gate so the cycling valve is out of the equation correct ? I'm sampling the boost right off the banjo bolt and I do have an analog boost gauge. Good to hear this is normal. Thanks Zipps

Chris White

Normal …but wrong. Move your boost gauge connection to the intake manifold for a correct reading.