I recently purchase an 03 S3. I bought a trident stubby can for it and she is backfiring really bad on deceleration while in gear. I know that remapping is necessary but what I dont understand Is ... Does a power commander by itself fix the problem or ? I dont understand completly what a power commander does and why I may or may not want it. The bike has plenty of power for me. I dont want to spend 300$ just for a few more ponys. I just want my machine to run as intended and smoothly. Any advice from experiance is greatly appreciated. thanks..