[Red Mustang Gt 46]

UH-OH, you have the mod virus!

Voiding your warranty really depends on your service dealer (for bolt-ons)...with all my little bolt-ons, my service dealer welcomed me for any problems, not that I had any.

Rule of thumb:
If your going to open the intake side (ex: C&L, throttle body, etc..), open up the exaust also (higfhflow cat pipe, cat back, etc...). You've started at the right point, now work your way back...

4:10 gears would really wake your car up....




Good Luck!