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Lowest psi for fuel pressure

Joined
15 May 2004
Messages
6,898
CTSC v3 low boost with CT FPR, high-flowing fuel pump, no voltage doubler.

I've changed the fuel pressure at idle from 43 down to 37 psi but things didn't change much. Under boost and WOT AFR are like this:
at low revs (3k) AFR start below 12, ok
with rpm raising AFR goes down til 6k rpm to 11.2-11.5, good
at 7k rpm AFR jumps down to 10.2, pretty rich. This jump can be felt like you push the A/C button ON. Not serious but disturbing. But I lived with it.

How low are your fuel pressure readings at idle with a low-boost CTSC?
 
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