When I bought my car it was 347 bhp running 3 bar map sensor dark greens I rebuilt the engine and used Stage 1 chip, 2 bar map sensor and dark blue injectors, would the fuel pressure have been turned up and do I need to turn it back down, it is not very good on fuel even on a motorway run and the exhaust is very dark on the MOT it is well within the spec for CO. thanks

 

HI,

just set the fuel pressure for what the stage one chip
should be, ask the company who supplied it, most just use the std
fuel pressure but different co% value, std cosworth weber marelli
fuel pressure is 3,bar @ idle 3.5bar with vacuum pipe off,

DAVE R

 

Thanks for that Dave I can now see that someone has put a small bolt in the reg hole. I think the screw adj underneath is screw in for more pressure out for less. thanks ED

 

ED,

Yes it is adjustable usually allen key

DAVE R

 

can anyone tell me where you measure the fuel pressure. thanks

 

ED,

scan for you,
DAVE R.