while accelerating
 

while accelerating up in the rpms of first there is a slight dip in acceleration then it continues to accelerate, this for the most part only happens in first but have noticed it in second also. I have no idea why it does this so any help would be great.

The let up of acceleration isn't alot it's just like a split second then its gone.

billy

3800rpm?

possibly? why?

billy

Pretty common problem. Click on this link https://www.rx7club.com/forum/search...der=descending to search old posts for the solution.

There area lot of topics that revolve around the 3800 hesitation, i personally have it, and i cannot get rid of it for more than a few days

I have yet to reground the ECU..

Basiccally when the secondary injectors come online there is a power surge coming from the ECU, this all happens right around 3500 - 4000 Rpms.. the secondary injectors come on, and there is not enough power (lack of grounds)

ASK more if you need anything. Markus