ormopl
Newbie
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« on: December 13, 2023, 04:21:12 AM »
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Hi,
car i have here is:
Subaru Impreza GH
2008
2.5i SOHC EJ253
AT
Currently setup is:
TD05 turbo on only spring acutator without any vaccuum fitted - boosting 0,5 atm
550 cc inj
custom exhaust with afr sensor and egt sensor.
Blow off.
We are using RomRaider and ecuflash for programming, including tactrix interface.
What i have done so far in the software i added the 550 cc injectors. Yesterday we did a chance to try to tune it.
During partial load afr sensor is showing that ecu is following the openloop maps, even on the 70-80% load. Boost is stable, and even afr seems to be stable then, but of course needs fine tuning.
The problem is when the throttle is WOT. It gets so lean that im not able to log it. AFR shows 14,4 and going up scale. Then it stops pulling, problably by the ignition.
We tried to enrich it by CL, by the Tip in, and even emulating MAF sensor reading by external emulator. Always the same thing, AFR goes up so much we are not able to continue. The best AFR obtained was 14 using external emulation, but the correction was noticed - AFR was unstable, and ecu was still stopped pulling.
Any thing suggested to be checked ? Any help would be appreciated.
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