pp6 or egreddy when de-tuning ?

[N1446]

i ve run out of patience running SUPER rich

i m only able to sucessfully drive the car when it is at operating temp

i have a EJ25D running on the original '91 2.2T ECU & MAF and i m swimming in fuel, obviously
-
i m about to change-out the turbo fuel pump for the N/A fuel pump and also switch the Turbo MAF for an N/A one from either a 2.2 or a 2.5

i m changing the plugs for NGKs as i m not sure what is in there at the moment

i ran a bottle of redline injector cleaner through it and its seems to have settled the idle to the point where it near stalls

.. should i still be using 91 octane or does it matter with no turbo ?

.. is there a way to trick the turbo ECU to only fuel at atmospheric ?

.. should i be looking into engine management, piggypack ECU ?

mmmrrr..

[Legacy777]

If you're running a turbo ECU on a non-turbo engine, it's going to be running very rich. piggy back is probably your best bet.

[BSOD2600]

Without ecu tuning (piggy back, revtronix, etc), the MAF scaling in the ECU is majorly off. The NA MAF has maxes out around 220 g/sec while the turbo MAF maxes out around 155 g/sec -- both are obviously a 0-5V range.

I've got graphs to prove the point if required...

[N1446]

is a pp6 a good start for turning this type of thing ?

the idle oscilates for two-three minutes on cold startup
91 octane seems to calm it down a bit

in the lower range its rough and the car needs to be warm before its managable

i installed new plugs and they seem to help

pp6 or egreddy ? >> going turbo again in the distant future