Hi,
im having Rich AFR when throttle lift off causing Idle & Stalling Problem especially when AC is on.

Im using 850cc Sard injector and stock Evo 6 ecu without Ceddy feature.
Have been cracking my head on how to resolve this problem.

Ive no issue if im using my PFC ecu. No idle problem & no stalling issue at all.

We have sum up to the injectors closing time per ms.
On my 6 ecu, i noticed when i rev the car on stationary, the fpr meter will go up when revving and when lift off the meter will drop back to its set pressure but will bounce back up again even without pressing the throttle and this have caused the stalling issue.
On the Evoscan, we noticed that whenever we lift off, the injector pulse/duty will drop to the lowest to 1.5V but if on my PFC ecu, i noticed via my commander that when i lift off the injector duty will drop til "0".

Is there anything to set on the Ecuflash? Have tried numerous way on setting the 6 ecu but without any success.

Please Help...

 

Got any logs of it when its struggling/stalling? Sounds like the typical evo MAF false high load on lift off after load issue.

Im still working on it myself but I have it 90% sorted. I can make it do it (load it hard under 3K then lift off and brake), but normal driving and parking etc its fine. Some can never sort it and it seems to differ setup to setup, rom to rom etc. PITA.

Check these threads:

https://www.evolutionm.net/forums/ec...sassembly.html

https://www.evolutionm.net/forums/ec...ng-clutch.html

https://www.evolutionm.net/forums/ec...le-issues.html

 

Thank you so much...
I wonder will putting in Ceddy features & convert MAF to SD will help the stalling issue?

 

Are you running a VTA BOV?

If so, thats your issue.

And going to SD will/should cure it.

 

Yes, im on a VTA bov and do anyone here have successfully run SD with Ceddy features?

Or will it be more stable if runs a Tephra feature?