Ok i was driving my car yesterday and i noticed it was making this weird banging sound. It sounded like someone was beating the inside of a bucket with a stick and it got faster and faster as the rpms increased. Also i noticed that my car had almost absolutely no power, didnt make any sense to me. I parked my car infront of my house for about 5 minutes and let it idle while i ran inside. When i came back out the car drove fine and i didnt hear it again the entire trip. Any ideas as to what this could be or what may be causing it.

90 convertible w/ 5spd
RB header w/ 2.5 inch pipes
K&N Cone filter

 

sounds like there was detonation...

could your leading coil or leading sparkplugs be in poor condition?? Or loose connections on the coil or bad spark cables???