evo ecu high idle!

[KingJamesEli]

Ok. So my last car I had came with a black box in It, I took that ecu out and put it in my current car with some 850s and tried to tune with tactrix, no matter what I did it idled 1500-2000 and very rich low 10s. Tonight I remembered that in my white car I couldn't get an idle under 1k and that was with this ecu in. Than after a few more moments I realized aren't the stock black boxes H4? Mine says H8. Is this an evo ecu? Maybe if it is I'll have to adjust ignition timing and re-scale my MAF (stock) And use evo injector scaling? Any help brothers?

 

[Mauispyder]

H8 is what came stock in 1998-99.

 

[2fast2evo]

Start with injector dead times for idle AFR tuning. If the richness persists at higher RPMs then start playing with the global scaling values.

 

[KingJamesEli]

I've tried 1500cc and 450dead time. I also just learned that my car is a 1996, And my ecu is from 1998

 

[2fast2evo]

450 deadtime might be too high, have you tried a lower value?

Also, I'm not familiar with Tactrix but is there a way to see if the car is stuck in open loop? That might make it run rich as well.

 

[KingJamesEli]

No it's in srock settings for o2 loop modes and I've tried lower dead times. Nothing wants to work for some reason.