Notices
1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage
Sponsored by:
Sponsored by: Auxito

Flowmaster for 99 4.6

Thread Tools
 
Search this Thread
 
Old Dec 2, 2004 | 11:17 AM
  #1  
balingwire's Avatar
balingwire
Thread Starter
|
Mountain Pass
20 Year Member
Joined: Apr 2003
Posts: 248
Likes: 2
Flowmaster for 99 4.6

I am considering replacing the factory muffler with a Flowmaster on my '99 F-150 4WD Off-road SuperCab (51,000 miles). I will leave all factory exhaust pipes (even the factory tailpipe) and converter in place. I am new to technology, so I am concerned about engine controls, malfunction codes, and engine performance. Will I cause any problems by doing this? The only thing that I am really expecting from this is a slight increase in sound, which is what I'm looking for. If there is any performance gain, that would be a bonus. I'm not putting duals on it for now because I want to keep the factory appearance for a little longer. Thanks.
 
Reply
Old Dec 2, 2004 | 12:39 PM
  #2  
BillyBob69's Avatar
BillyBob69
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2003
Posts: 7,406
Likes: 52
From: Wheatland, Mo
Club FTE Silver Member

Well what you are expecting is pretty much what you are going to get. The muffler won't cause any probs with your truck or any trouble codes. With the setup you are talking about, you will only get a sound change so no worries. Also, when you get around to doing the duals, check with a few different shops. If you are going to have a shop do it, they may be restricted like they are here in Colorado. Even with my old Bronco, they wouldn't do duals because it is not a factory configuration. (Supposedly state law).
 
Reply
Old Dec 2, 2004 | 03:07 PM
  #3  
balingwire's Avatar
balingwire
Thread Starter
|
Mountain Pass
20 Year Member
Joined: Apr 2003
Posts: 248
Likes: 2
Thanks, BillyBob69. After a little reading, I've become concerned about in-cab drone. I own vehicles that are dualed out, but they have so much wind noise that I've never noticed the drone. My new son will be spending several interstate miles in the truck, and I don't want to damage his hearing. I would like for him to avoid the hearing loss that I've experienced and not have to put up with 24-7-365 ear-ringing.
 
Reply
Old Dec 3, 2004 | 09:33 AM
  #4  
BillyBob69's Avatar
BillyBob69
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2003
Posts: 7,406
Likes: 52
From: Wheatland, Mo
Club FTE Silver Member

In my old Bronco, I switched out to a lower end muffler, (Golden Turbo from Mienike sp*) and it gave the truck a little rumble to it but the tires were still louder then the exhaust. There should be other options.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BigBlue99
Exhaust Systems
5
Aug 31, 2011 11:29 AM
IES
Exhaust Systems
4
May 15, 2002 10:36 PM




All times are GMT -5. The time now is 12:07 PM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE