How To Properly Set P/I-R Trimmer

[HYDE16]

Originally Posted by Richard L

The PI-R is an additional option for improving the effectiveness of the wmi delivery. if you have a small turbo that is operating beyond it high efficiency range, you might like to bias the Pi-R towards the P. It will help cooling the charge air better.

Originally Posted by Richard L

The 60%-70% IDC is good

Thanks Richard, as per the HFS-4 User Manual it says for 100% boost controlled, set the P/I-R trimmer fully counter-clockwise. Vice versa for fuel.

Since I have a smaller turbo operating in the higher end of it's efficiency range, you recommended the I set the P/I-R trimmer counter-clockwise towards the P to help cooling the charge air better which is more boost biased.

I think I meant to say do you think a 60% boost (P) / 40% IDC (I-R) setting on the P/I-R trimmer is a good setting?