Can anyone tell me why my 96 R/T 10 backfires when I shift gears and when I lay off the throttle (usually from 1st to 2nd)? I was told that the car needs to warm-up, but even when it warms up it still does it. Also, I live in Hawaii where it is always 80+ degrees so I don't know how warm it needs to be. Do you think I need to change the plugs? No Viper tuners here in paradise. Any suggestions will help. Also, looking at gaining some horsepower, know of anything that is easy to install for a non-mechanic. I currently have borla exhaust and thats about it.