I'M ABOUT TO PUT AN EXHAUST ON MY 98
F-150 EXT.CAB 4.6 .. I WAS WONDERING
IF ANYONE ELSE HAS PUT A TRUE DUAL
EXHAUST ON THERE 4.6, AND IF THE LOSS
OF BACK PRESURE CAUSED A LOSS OF H.P.???

THANKS FOR ANY INPUT...

 

A small loss of power was noticed. Perhaps slightly more restrictive muffler(s) should be considered. Initially, I had glasspacks. After they "burned up", I went with the Ravin. It also flows quite freely.


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1997 4x4 Expedition- 4.6L, true dual exhaust w/Ravin DI/DO, K&N air filter, SuperChip, airbox mods, Edelbrock shocks, 285/75R16 BFG ATs, 2000 F150 "XLT" wheels, 4.10 gears, Auburn LS, Clarion In-dash CD player, Smitty Bilt push bars and nerf bars.

2000 4x4 F250 SD XLT SuperCab SWB- 6.8L, Offroad Pkg, Camper Pkg, 4.30LS, Tape & CD player, Remote Keyless Entry, Sliding back glass, tinted windows, 265/75R16 OWL tires, Smittybilt nerf bars & Line-X bedliner.

NoMo's site

 

I have true dual with a 18 inch glasspack on each pipe. Seems like there is more power if you ask me. I got 2 1/4 inch pipe.

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1997 XLT Teal 4.6L Flareside 4x4. Automatic, Reg. cab, tinted windows, bug deflector, Dual exhaust, K&N Generation 2 air filter, BullDog keyless entry/remote start(installed myself), Custom 16" wheels, bedliner, Covercraft tonneau cover, electronic shift on the fly. Going to add headers.

 

I'm also about to put dual exhaust on my 98
ext. cab. It has the 4.6 l engine. Has
anybody tried Supertrapps on the end of each
pipe? I am planning on leaving the cat.
Anybody have any idea what that sounds like?