I'm having horrible trouble with 3500-4000 RPM Hesitation. I've done a lot of research but I still have problems after trying a number of times. I've already grounded my boost sensor and I also added an extra ground to my ecu and my Injectors. I still get the hesitation. Is there anything I can do to try to prevent it?

Other Preventive Mods:
255 Walbro
New Bosh Injector Clips
New Rebuild.
New Spark Plugs
New Spark Plug Wires
Reman Harness.

Any other suggestions? Thanks.

 

confirm that the the ports are physically opening.

 

Oops Forgot this is problem is on my S4 TURBO, not my NA.

 

clean the injectors and replace the fuel filter.

 

maybe ecu

 

I have brand new injectors. New Fuel Filter. Im guessing a bad ECU myself. Its an N332. Is there a proper way to test it?

 

There used to be a way to replace a bad resistor on the board to fix this. If you can find a replacement cheap, that will be the safest way to go. Or do a google search for "Resistor Fix on RX7 ECU".