I also have the straight pipes,no mufflers, with resonated tips only and i love em! I did talk to a represenative from pypes at a car show and he strongly recommended keeping the cats on or it will sound like a John Deere.
__________________ 2006 Mustang GT. CDC classic chin spoiler,Off road x , FRPP GTA axlebacks,Tunable Induction CAI,SCTtuner. FRPP 3.73 gear,Rear window louver,Qtr window louvers.CDC shaker hood,M&H drag radials, and ZEX 125 shot nitrous for insurance!
Best ET to date- 11.89 @ 114 mph
390 rwhp
520 rwtq
No more Nitrous  all motor now.Don't ask.
KEEP DRIVING THAT PRIUS.....WE NEED THE GAS  | 
