Before I purchased my 1989 gtu, the previous owner changed the tranny from an automatic to a 5 Speed. My 7 cuts out really bad at 6000 rpm. Its like the engine gets a fuel cut. I know this should not happen because i still have 2000 rpm left till i hit redline. Do any of you guys know if the auto ecu would cause this or any other problems. Thanks.

 

The automatic is ECU controlled, but I think it's a seperate ECU from the engines.

If it's 6000RPM stumbleing, could be time for a tuneup.

 

You will not have any problems with the ECU as it is the same as the 5 speed one.