I'm sure many forum members have tried one of these. I haven't done any research so any and all feedback, e.g., noticeable hp increase, sound, brand, vendor, etc. is much appreciated. My cursory search started with Summit = https://www.summitracing.com/parts/d...nuZvd6soeGzurQ

Thanks!!

 

Sound and looks only.

 

Thanks, jkeaton, what I figured! I'll spend the money at the pump.