I don't notice a difference with rev hang. Car is faster, feels great, but if I am in neutral and rev it, it still hangs then gradually decreases down in RPM's. Not sure if this is a 'problem' per say, but I don't know if what you are concerned about is somewhere other than doing it this way?

 

I came from a Evo 8 for 10yrs and now i bought a X with 7,000 miles and INSTANTLY noticed this when reving at a stop light.. it would hang.. then fall.. i fricken thought the car was broken. But.. it kept happening so i figured it is normal. Is it normal? Or did some guy get a tune before me and jack **** up?

 

Normal

 

... and it's much MUCH better now.



What it does:
Leaning out fuel while decel in the low load area, 10&15, from 5k5 1/min down to 1k5. Engine braking while rolling downhill is much stronger.
Does NOT close the throttle entirely. Affects your STFT heavily (+12%+) but as far as I can see does not influence LTFT on a long term basis.
With those settings, rev hang still appears in 3rd and 2nd gear sometimes, but overall it's much better.

 

I was having the same issue for ever with the accessport but yes if you get a good e tuner either ams or look up rickerman tunning and he can do it as well. Just let them know what is going on I fortunately ended up switching to Evo scan and going open source and had a dyno to fix it all but I have a few friends that have had this issue and Chet the owner of rickerman tunning fixed it for them using the accessport.

 

My bad computer only showed me one page at first