alright my tII hesitates between 2 and 4 K rpms, once it hits boost it jus takes off and runs very nice, but from 2 to 4 it hesitates pretty much throws me forward and backwards in the seat.

i looked at the injectors, replaced all the O rings...today i changed out the ECU and nothing helps... ive messed with the TPS and i have changed it out and i may not have listed everything i have tried but ive tried alot! it seems to run real nice untill she warms up...i dont know what else to do..any ideas?

 

The secondary injectors kick in at about 3800. Many RX7 owners have experienced the 3800 sag. There has been a lot of discussion on these forums concerning the causes and fixes of this problem. I suggest you run some searches on 3800 rpm hesitation and also read the FAQ's. You will find a lot of information without having to wait for responses to your thread.

 

I had this problem. Added a ground at the MAP sensor and grounded the ECU to the floorpan. Search for grounds and you will find writeups on it.

 

also the ACV opens the 5th and 6th ports at 3800,
so if they arnt opening like mine, you can try fixing it or just wire them open..
correct me if im wrong but i heard that befor, it fixed my steling problem.

 

He has a turbo.
But removing emission's an the 5th&6th port actuators helped my hesitations.