can u run a tuned ecu on stock motor?

[lucas240sx]

ive been searching but really havent found a true answer
i understand it wont run completely right....but
the ecu is tuned for 550,z32 maf, and 2871r turbo
i have 370,z32 maf, stock t25
would it make it want to run lean?

[emu103]

I tried my friends ecu that was tuned for similar plus cams.
It was an emance ecu
My car would turn over and over and eventuallly fired up and ran like complete garbage for 2-3 seconds then died.
I have stock eveything.
From that i would say no....

Your z32 mafs probably makes the biggest difference in compatability.

[lucas240sx]

yea it runs it but u can tell theres a miss
any way of put the ecu back to stock settings?

[besTint]

depends on the ECU. like a AEM EMS, you can easily set to stock calibrations with a laptop.

a chipped ECU is harder. probably need to find a tuner who can.

[tabasco122]

biggest thing is your injectors and maf, so since your injectors are different, it will run lean unless you adjust for it with a fuel pressure bump, but even then thats not a great way of doing it

[lucas240sx]

ok......well sounds like as long i need to upgrade my injectors and it should be fine
what kins of gas mileage do u guys get with the 550?

[Jdm240sx123]

Why don't you just get that baller ECU tuned to match your set up??? Injectors ain't cheap. Lol

It will run lean as is...

[fliprayzin240sx]

Why dont you just get the ECU rechipped?


PS: 550cc injectors are too small for GT2871R if thats what you plan on running later down the road. You'll need atleast 660cc injectors but most folks run 740cc since they're more readily available.

[usdm180sx]

Why the fuck would you want to do that?

[lucas240sx]

i didnt realize u would need at least 660
thx for all the help guys

[Jdm240sx123]

Rechipped???? Just tune that bitch.... Haha