So...get 4" piping and run it into the fender...that silly little box still gets heatsoaked since the exhaust pipe is RIGHT NEXT TO IT. Also...in order for it to void your warranty they have to prove your modifications was the reason WHY that part failed. HV3...they can't see it. Rockers...they aren't going to be able to tell if they are modded 1.9 ratio ones...You can get PEM's...they can't tell with those on their either...And a 3" catted bolt in downpipe isn't going to void ANYTHING.
So...there ya go...