HomemadeTurbo - DIY Turbo Forum

HomemadeTurbo - DIY Turbo Forum (https://www.homemadeturbo.com/)

- Engine Management (https://www.homemadeturbo.com/engine-management-10/)

- - FMU question (https://www.homemadeturbo.com/engine-management-10/fmu-question-31261/)

Quote:

Originally Posted by DeleriouS

see what i mean....tune and don't worry about tuning(you'll be fine)...i dont know which one to believe

either way, an uber base map would still be better than an FMU. touch lean in a few places, or run lean the whole time.

think about it. everyone has told you what you need to know, someone needs to lock this bitch up.

hey hey

i am new here and came for some help in my setup

BTW i am in Australia :P

at the momenti am stuck as to what to do with engine management, i cannot afford a full management here its about $1.5kUS installed

i was considering fuel management only with following:

larger injectors
larger fuel pump
fuel management

but my 3rd option (one i need just to get the ar from a to b for now)

just run a fuel pressure regulator,

there are 2 types non rising, and rising, would non rising be safer for running 6psi on stock ecu?? or just go rising?

also i have a mazda B6 engine FWD version!

thanks

eddie

Quote:

Originally Posted by 90boostdaccord

Quote:

Originally Posted by DeleriouS

see what i mean....tune and don't worry about tuning(you'll be fine)...i dont know which one to believe

Since when does an FMU run lean? In most cases they run pig rich...its the high fuel pressures that are dangerous to run.

There is no reason to lock this thread.

that is what i thought...why is it dangerous to have high fuel
pressures? what if you have a bigger fuel pump - i have a 255lph walrbo.

Quote:

Originally Posted by DeleriouS

that is what i thought...why is it dangerous to have high fuel
pressures? what if you have a bigger fuel pump - i have a 255lph walrbo.

because your fuel system was designed to operate in the 30-50 psi range (give or take)

and what would i be running with an FMU....so instead of rising the fuel pressures - why dont i add bigger injectors and downtune the fmu

nevermind - u cant tune an fmu

i love it when people answer their own questions ;)

Quote:

Originally Posted by turboDA6

i race mine on a basemap. it prolly pinches lean in a few areas but i raced it every weekend and all week long whenever i got hit up. im running 10psi also. you'll be fine but it'll pull so much harder if u got it tuned. kev was never really super tuned and he touched the 13's...

i never had my first map tuned at all and with stock exhaust, stock cat, stock clutch, on 11psi, i put down 240whp, just barely going a little lean from 5-7k

Quote:

Originally Posted by xenocron

you got lucky...i would never race with out making sure with a WB what my AFRs are...just not worth it IMO

as long as you have boost fuel eff. set high enough to where you already know it will give the engine enough fuel under boost, you're fine. vacuum maps almost always run rich on basemaps anyways so no worries there anyways. i don't think wb tuning is neccessary to run safe, to run effiecient yes, but not just to run safe. i ran my car on a basemap for 7 mos. raced at the track and beat the ---- out of it, finally got it on a dyno and my afr's were a little lean in the 5-7k range (low 13's), but nothing serious at all, and that was with boost fuel eff. set pretty low.

i honestly have total trust in a good basemap, the only real problem to me with a basemap is how they run in vacuum with no tuning.