Originally Posted by Stu @ M Developments
May i add as a note of caution, that no 803s chip designed for std fuel pressure will supply enough fuel for 26psi at high RPM, so beware.
The std system will have the boost tailing a lot from 5500rpm onwards, so beware of the DSBC upping it where an amal valve could not. Im sure Ahmed will concur with me if you call him.
iv got this problem the boost dropps off at around 5400 ish and ive just got a boost controler to try and sort this out,im running greys etc,will i still have the same probs running lean at higher rpm its running 2 bar boost but im loosing around 80bhp between 5400 ish to 6500