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ECUflash evoscan idle log, something wrong

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dboyle23

10+ Year Contributor
297
16
Jun 10, 2010
Chicago, Illinois
Ok, I am not sure what's wrong here. I have denso 660cc's but I have lowered the scaling to 512 because it was REALLY lean earlier. When the car starts the AFR on the wideband is 18+, after a minute or two it goes to roughly 14.5, with barely any o2 cycling. THEN I see the boost gauge go from 0 to -18 in vacuum and the AFR drops to 11, then it comes back up to 15.2-15.7 and stays there indefinitely.

Let me know if you notice anything wrong, since this is my first time tuning I am sure there is some kind of issue.

Thanks

BTW, the fuel trims NEVER populate. I let the car idle for like 30 minutes and they never showed up.

Also, should I be using the mitsubishi mutIII or the DSM/3000GT setting?
 

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Did you notice your O2 sensor at .01v? Usually that means it's bad.
 
Once in a while it moves but usually it sits at 0.

What can cause this?

Anyone have any other suggestions?

If not, I guess I will have to pay someone to tune it locally.
 
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