which exhaust system would you recommend for a 1997 ford f-150 4.6 liter V8.

 

Dule Flowmasters would sound very mean and add some power
and torq to you engin and possibly increse you Fuel Econemy

 

A single inlet dual outlet Flowmaster is a good choice. Sounds great on mine and looks great with the dual stainless tips coming out the rear.
Jimmy

 

Is your dual outlet Flowmaster much louder inside on the highway?

 

Mine isn't noticebly louder.

 

so flowmaster is the best set up the f-150

 

Gibson is a nice big cat back single muffler you should consier. E.g. Summit carries them. It is a complete stainless exhaust system and you won't have some mom and pop shop bend you up some ****ty system that will then dangle from the trucks behind like I see it way too often!

The Gibson piping is also the same route than factory, so you can still tow stuff and put a boat in the water.

George

 

My Flowmaster has a noticable rumble at highway speeds, but it isn't overbearing. You can still talk normally. The cats quieten it down alot.
There are prefabbed dual tailpipes that any muffler shop can get. Mine were prebent and fit perfectly. They are aluminized and won't rust for a long, long time.
Jimmy

 

lxman,

what series flows are you running??

Brian

 

40 series, see your newer post for my reply.
Jimmy

 

I just put a new cat back system from Borla and have been happy with it. You can hear it when you are on the gas and when at cruising speeds, it's quiet like the stock exhaust. Great performance upgrade for my 98 reg. cab 4.6L STX.