Well, I just put an original 40 series SiDo 2.5" cat back on (Dumped). Sounds pretty decent.... Wanna give it a little while to break in before I decide about changing the cats to high flows. It has a good deep growl at idle and gets pretty loud WOT. I think it sounds the best at around 2800 rpm's. I like that it has no rasp to it, stays deep and strong constant!
It will last more than a couple years. No break in on a chambered muffler though. Only packed mufflers will "break in". If you want more sound, you need to do something with them stock cats. It will still be deep, but it will add more rasp to it as well, especially if you leave it dumped.
__________________ 2006 F150 XLT 5.4 4x4 Performance: Cheap ebay CAI w/ K&N filter, Delta Force tuning Exhaust: Stock manifolds, NO cats, 2.5" true duals, Magnaflow X pipe, Original 40 Series Flowmasters, 3.5" stainless tips Other mods: Nathan Airchime K3LA locomotive horns Exhaust videos: Idle, rev and hammer it! Cruising by Pulling up to an idle Inside accelerating and cruising
When I decide to delete the factory cats and go with the high flows, I am going to run the tail pipes out the back with rolled tips...Just can't decide what size tips I want. Thinking 3"
__________________
2002 F-150 King Ranch 5.4 (2WD)
Nitto Terra Graps; 20% Tint; Flowmaster 40 2.5" SiDo dumped;
When I decide to delete the factory cats and go with the high flows, I am going to run the tail pipes out the back with rolled tips...Just can't decide what size tips I want. Thinking 3"
3" is too puny & cute. 3.5" for your body truck. Maybe 4" if you go straight out, but not 4" 45'd out the3 back.
Dumped chambered mufflers are quieter than if they had tailpipes & nice tips also. It would be a little louder if you had tailpipes & tips.
Chambered mufflers don't break in? WRONG, mufflers, and even exhaust tubing have to go through several heat cycles to break in. Your flowmaster should start sounding better in 500-700 miles.
__________________
2005 FX4 F150, Silver with Black int.
Just about loaded.
Chambered mufflers don't break in? WRONG, mufflers, and even exhaust tubing have to go through several heat cycles to break in. Your flowmaster should start sounding better in 500-700 miles.
Yeah, obviously you don't know what your talking about. There is nothing to break in, no padding just plates. All that's going to happen on 500-700 miles is a thick coating of carbon and soot will build up.
__________________ 2006 Ford F150 XLT - 281ci V8 - Regular Cab/Flareside - 2WD
True Dual Magnapack Exhaust - Gott's CAI - Edge Evolution Programmer Mustang ExhaustExhaust InteriorDrive By
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company
Linear Mode
