HOW TO homemade "Super FMU"

[hard2obtain]

Here is a HOW TO, to lower the Fuel Ratio from FMU 12:1 for example to 8:1 or 2:1 To do that we need to bypass the Vac line that goes to the FMU with a MBC to restrict the air pressure the FMU reads, and instead of goes to 12:1 as preset (for example), only raise the fuel pressure controlled by the MBC as you want. Enjoy

[sha-d]

+1!!!!!!!!!!!!!!!!!!!!

[busa4]

avoid using fmu's as a tuning devise....

[hard2obtain]

Originally Posted by busa4

avoid using fmu's as a tuning devise....

I agree, but FMU are a nice option for low boost 6-7psi.

[Photonic_Si]

lol add a boost tap on the line and you have a fully incremental super fmu. top ----. not bad for low boostie

[MAJORAHOLE]

with any obd1, chipping is way better, and cheaper

[hard2obtain]

Originally Posted by MAJORAHOLE

with any obd1, chipping is way better, and cheaper

[jose306]

yeah maybe chipping is easier but I have a neon and those ecus are not chippable

[MAJORAHOLE]

you never mentioned that

[jakethesnake110]

Originally Posted by Photonic_Si

lol add a boost tap on the line and you have a fully incremental super fmu. top ----. not bad for low boostie

wat do you mean by boost tap? im planning on running 8psi so i was thinkin going with the fmu just for now. plz help me out