I am looking for help with the following problems on my rotary rocket..
1:
Backfiring when decelerating or any loss of rpm
When I rev the car and the rpms start to fall i hear a loud backfiring noise, I am no sure if this is the airpump or some other problem. My Rx-7 needs new exhaust as it has a leak in the downpipe, is also only has one cataltyic converter. Most of the exhaust is going to be replaced anyways.
2:
Fluxating rpm when idling in gear
When I idle the car in neutral there is no problem, but when the car is in gear and the clutch pedal is depressed is goes from about 1700RPM to 1500RPM and does this continuously no matter what I do, my exhaust has a leak and I also have a preformance K&N intake but I doubt that this is a sensor problem.
Thanks for any help in advance.