this is really weird but i swear its really happening. at more then about 3/4 throttle in any gear but 1 and neutral i get a popping sound, sounds like a slight backfire, really rapid over 3k rpm. i thought it was bad gas. so i ran 2 tanks of gas and a bottle of gas system cleaner. but the problem is still there. what i cant figur out is what would cause this. if it was a fouled plug or bad coil pack it should happen no matter what gear its in or if its not in gear. any ideas?

 

anyone?