im on a limited budget right now, so shude i spend the $100 for the fmu or save for a month for the piggyback unit/ replacement ecu?

Are fmus dangerous to use? i hear alot of complaints about them

 

Save for a month or however long it takes.

 

...

 

fuel management unit, or ecu?

 

ECU sorry for the lack of clarity.

 

sorry if i dont accept right away, i need more than one opinion before i make a serious decision.

 

bump it up

 

What are you trying to tune? FMU is only asking for trouble....Id opt for something like crome or uberdata.

 

i only need a unit for fuel/air. ive been looking at blox fmu, and i can get a 12:1 and evry 1 psi it lowers the compression accordingly. that or somethin like hondata/e-manage for the same purpose.

 

But why waste the money? Just find someone on here in your area that tunes with crome or uberdata and be done with it. Dont try to be cheap and end up having it run like **** or worst case blow up.....Do it right the first time.

 

ther is not a tuning shop close enough to make runs to the shop like that. i need something that will self adjust the compression and that i can work on.

 

A 12:1 fmu raises the fuel pressure 12 psi for every pound of boost. You can't run very much boost with a fmu cause your fuel pressure will rise to very high pressures making your injectors spray funny. And if you are running boost then you most likely are going to want to adjust your ignition timing to keep it safe. Get yourself injectors, an emulator, socketed p28 ecu, crome, and someone that knows how to tune it.


Modified by base-op.1320 at 9:14 PM 11/10/2007

 

thank you. would it be good for up to 10psi? not as easy fix as i thought it would be.

 

Its not safe at all IMO. It might blow up or you might get lucky and have it only run like ****.

Crome and uberdata are free. Do some research on tuning and buy a used wideband and be much happier in the end.

 

http://www.phearable.net/tech/....html will answer your questions.

 

save your money, fmu is a bad choice

 

yeah a fmu at 10 psi would be about 160 psi of fuel pressure, which is 120 psi to much

 

fmu sucks, get crome or somthing like it.