36lb injectors w/ or w/o fmu?

[brian88lx]

I run 36lbn injectors with a 6:1 fmu.

i am noticing 3 of my plugs were white when i blew the headgaskets one time. i seem to always run rich on my lm-1 a/f meter though...like down in the 10's or 9's. looking at the plugs it seems a few of the cylinders were lean though.

should i get rid of the fmu? i dont know if its properly working or not. should i just upgrade to 42's? that involves recalibrating my maf which ends up costing quite a bit.

[blown1989saleen]

dude i run 55# injectors and run 11.5-11.8 A/F and my plugs are pretty white too, the only accurate way to read plugs is to shut the motor off RIGHT after a good full throttle run, dont let the car idle at all. i dont recommend thaking the FMU off till you know what the A/F is. if your gonna try it do it on a dyno with A/F.



Scott

[2stangs69-91]

If cyl's 7 and 8 are the lean ones you might not have enough fuel supply. I have heard these are the last 2 injectors to get fuel and if you are running out of volume these will go lean.