I am using a Sfmu with 32# accel injectors. I am using the stock fuel pump with a msd inline. I cannpt get this car too lean out at idle at all. I have the idle fuel pressure set at 18 psi, and it still idles between 12.5-12.8 afr. I am using the biggest disk and dark spring in the sfmu....Any suggestions???

Thanks in advance

98 GS
Super 17c Turbo, Portfueler, Je pistons, Eagle rods, Etc.

Sounds like a stuck open injector if the pressure is 18 and your still pig rich.

i had a similar issue, the afr was way rich and all over the place when crusing gear to gear. it was the filter in the m/l. check to se if its dirty, wet, or missing. btw, nothing else works like the filters that come with it so anything else will cause issues like this too.

got that megasquirt!