Rumbling, why?
#1
Rumbling, why?
When I rev the engine, out of gear, I hear a rumbling, popping noise in the exhaust mainly between 1500- 2500 RPM maintaining steady throttle. The car drives perfect but I dont know what to make of this popping.
I dont have a cat so I know that can make the car louder but I dont think this is the cause.
Am I running rich in that area of the map?
I dont have a cat so I know that can make the car louder but I dont think this is the cause.
Am I running rich in that area of the map?