A big question here , i not found this question ever in nefmoto!
Example for a 3 bar FPR , ww have 2.5 bar at idle with vaccum connected.
TVUB must be set at the value from bosch specification at 3 bar row from table or must be modified for 2.5 bar?
The goal of an 1:1 FPR is to maintain an constant differential pressure between the pressure inside the manifold and the fuel pressure.
At idle, you have a lower pressure than atm in the intake manifold, in your case 500mbar lower. Thats why your FPR is dropping the fuel pressure to 2.5bar. You still have 3bar of differential pressure.
So no, you use an 3bar 1:1 FPR, you have to look at 3bar row.
running good with this values?
sorry, didnt saw your message until now. Yeah, running good, I made some fine adjustment in TVUB but not too much.
