What Pill for me?
 

2001 WRX UK300 PPP running relatively standard, what size restictor pill should be used?

I have currently a 1.5mm pill but appears to be lacking boost slightly which is good as the engine is still running in, but its now time for more power, the current boost varies from 0.9 - 12.0 psi when stamping on the right pedal.

Im led to believe 13 psi is around the norm for a standard UK WRX, but is mine slightly different being a PPP? IF so what Pill size should i use please?

The car has a larger rear exhaust, uprated panel filter and everything else standard. I run the car on no less then 97ron fuel.

Thanks;)

anyone? thanks

bump bump