b18c1wes

my car is set to run rich by the vortech fmu.. will this hurt any thing on the engine? my af gauge reads like 3 from full rich on my a/f gauge....its set this way to protect the engine because its turbo but not dyno tuned with hondata yet....

DaX

iTrader: (1)

Your gas mileage goes poopie with an FMU. Rich conditions are safer than lean conditions though.

b18c1wes

ya i can deal with that better to have bad gas mileage than a blown motor

DaX

iTrader: (1)

Don't the wrong idea from me though...I hate FMU's. Jacking your fuel pressure up above 100 psi is no good. If you have too much pressure it can make the injectors have to work very hard to open. Your fuel system was not designed to operate at that high of a pressure.

b18c1wes

i have a walbro fuel pump with a gauge and its at like 45 50 psi

twkdCD595

@ idle.

when you get into boost you start adding pressure... ex a 10:1 fmu will add 10 psi fuel pressure per 1 psi boost pressure.

so @ 5 psi your adding 50 psi of fuel pressure to your base 45 psi = 95, lots of fuel pressure still.

just an fyi to not go to crazy wiith boosting on the fmu... too much pressure is bad and it does not take much to add up to 100+ psi of fuel pressure.

b18b1hmtlove

Cost of FMU=$80-100

Cost of Chipping your ECU and having someone send you a Chip: $50

Any questions?

b18c1wes

getting it dynotuned by secret services in tampa with hondata when i get the money (like a month or 2) i should be good till then right ill be replacing the injectors before i tune it prob.....

b18c1wes

even when i get it tuned im not boosting over 5-7lbs 5 is enough for me and ill get more hp when i tune it