My Power FC was set by Pettit Racing to .83 boost I think Cam said he downloaded a base map. Anyways... the power fc wont let me lower the boost to less than .50 for the primary/secondary low and primary secondary High. Is this normal? Also what do the percentages mean on the side of the boost decimals? I tried lowering them to 20 and 25% and it lowered my max boost to .65 is it okay to lower the percentages what does it do?

Alex

 

I've never tried lowering the boost settings on my PFC that low, but I suspect it wouldn't matter. 0.50 is roughly 7psi which is your wastegate spring pressure (IIRC). So you're going to boost at 0.50 regardless.

As for the percentage, this is the duty cycle for your precontrol and wastegate solenoids. Adjusting this upwards *can* lead to quicker spooling, but also to spiking. Lowering the duty cycle drastically will lead to sluggish boost response and may stop you from hitting desired boost levels.

-Geoff

 

basic question... do you have another boost controller installed? like is there a Greddy or AEM box somewhere in the car?