Here are two logs I made. On first you can see I'm pushing just a little bit the throttle and I get way to rich AFR (I've tried changing the MAF scaling for 50 Hz but it doesn't seems to change anything)
On the second one, you can see that after going WOT til 7600 rpm I lift the throttle the car goes rich also like 12 - 14 AFR for 20 seconds and then at 3200 rpm, it gets back to normal 21 AFR

What could possibly do that ? I really miss something here. This tune was running well on my previous engine which was an evo 8, this one is an evo 7. The only difference is the EGR soleno bypassed under the intake. Could I be missing something ?

 

Happens to me too, like what the OP described, wonder if he's ever found a solution to this issue. To recap; in gear and past 3k/rpm going into decel looks like injectors don't shut off and afr keeps around 14.8-15.0. Kind of annoying at the track.

 

Does it happens only if you accelerate a lot (at least 50% TPS) or anytime you get over 3200 rpm ?
What did you change before it happened ? (for me it was whole engine... so quite hard to find)

 

Decel fuel cut tables. Search in the ecuflash section for throttle hang or rev hang.

 

It happened only if you got in boost and your rpm was above 3200rpm and went ind decel so before it crossed the 3200 it felt it was trying to idle once it crossed 3200 down it closed them fine. Though Tom fixed it for me it feels like he raised the throttle feedback. Thanks

 

How did he fix it ? I'm really interested as mine still does it and it's really annoying

I've tried it a bit already but couldn't find any improvements

 

Ask him i dont know i know he was trying few things before one worked but it's definitely fixed , would have to agree that it was annoying. His nick tscompusa. Good luck.

 

Your deceleration problem is normal. Mitsubishi designed fuel management to do that to "improve" fuel milage. Everyone's evo does it.

 

Thanks, you're totally right. I've datalogged a friend's evo 9 and it's doing exactly the same. so it's not a problem with mine.