Which Exhaust?
Senior User
Joined: Dec 2007
Posts: 130
Likes: 0
From: Augusta, GA
I dont know if I'd recommend it, but my 04 has the magna flow 4" with no cat. It sounds really good. However maybe the exhaust temp is too high? I read that Banks is like half the temp.
With the K&N and Exhaust (and tuner) it hauls ***, and doesnt sound like a diesel under WOT, sounds like a freaking jet airplane.....
With the K&N and Exhaust (and tuner) it hauls ***, and doesnt sound like a diesel under WOT, sounds like a freaking jet airplane.....
Posting Guru
Joined: Oct 2005
Posts: 1,285
Likes: 1
almost all the 4" turbo backs are just as good, pick the brand or price you like. the stock system is stainless so if you buy an aluminized system your upgrading the size but downgrading the quality. (kinda matters if you live in a place that they salt the roads, if you run super high EGT's, or want it to last as long as the truck will).
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
MBRP, Magnaflow, or Banks are the three I'd recommend for fit finish and quality. I run the Magnaflow 3.5"x4" w/5" tip straight piped. Nice whistle at idle with a deep throaty growl when you hammer it. Not loud on the road either, but I do have a CC truck.
Former Vendor
Joined: Jun 2009
Posts: 114
Likes: 1
From: Houston, TX
I recommend MBRP. They have kits that retain the cat or "off-road" kits that will delete it. They also come in 3 different materials depending on your budget. MBRP kits fit, look, and sound great. You cant go wrong with them.
Trending Topics
Freshman User
Joined: Nov 2008
Posts: 43
Likes: 0
From: western WA
I installed the Magnaflow 4" turbo back, cat delete.
Nice kit...very complete...easy install.
Dont get a kit with a 3.5" downpipe...waste of money to put a 4" exhaust on with a 3.5" downpipe...the smallest diameter in the system will determine flow...IMO.
Nice kit...very complete...easy install.
Dont get a kit with a 3.5" downpipe...waste of money to put a 4" exhaust on with a 3.5" downpipe...the smallest diameter in the system will determine flow...IMO.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
Actually unless you're running a HUGE turbo then it's a waste of money to install a 4" downpipe, not to mention a PITA. I've been running a 3.5" downpipe with no problems and 500 rwhp as a daily driver.
