Anyone run a Dynomax Ultra Flo Muffler on their truck? Dynomax has a $25 rebate if I purchase before June 30. I ordered one for my car and now I am thinking about one for the truck.

kev

 

I have the "Stainless" UltraFlow, and really like it. Borla was my 2nd choice.

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2000 F-150 Lariat

4.6 Liter, 3.55 Limited Slip, Dynomax UltraFlow cat-back w/ single 3" exit, K&N Gen II FIPK, Superchip

 

I've had the Ultra-flow welded one for over a year. No loss of low-end torque, great mid to top improvement, phenomenal sound.

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 4.10LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Pirelli Scorpion Zero 275/60/16s, Mobil 1, K&N oil filter.

 

I was going to go Dynomax but that 'roving glas pack' arrangement concerned me. Looks like it would burn out pretty quick. Did the sound change significantly after a years worth of use? I decided on the Magnaflow product for mine.

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- 2001 F150 Harley Davidson Special
- 1993 Mazda Miata, wifes car
- 1994 Harley Davidson Heritage
- 1976 Honda CB750K, Original
- 1965 Honda 305 Dream, Original
- 1971 Triumph Trophy 650, Original
- 1971 Norton Commando
- 1970 Honda Trail 90, Original
- Yamaha 500 Short Tracker, racing #69
- 1984 Yamaha Virago 1000, wifes bike
- 1981 Honda Passport 70, wifes bike
- My on-line album
- My Webpage

 

Try this website for the best mufflers.
http://www.spintechmufflers.com
I have one on my '00 expedition. It was installed with an "X" pipe to replace the "Y" pipe. It works great and sounds good too.

 

Irutt- The packing is rated at 1500 degrees and sounds exactly the same after one year. What straight through design doesn't use high temp packing? Magnaflow? 1500 degrees is higher than several ceramic header coatings.

 

I recently had the Ultra-flow 3" SI/SO installed and am very pleased. I especially like the sound between 3,000 and 4,000 rpm. Idle sounds great too. for the price I highly recomend it
Try A-1performance.com

 

I too have the dynomax 3" si/so on my 97 f-150, I kept the exhaust tip in the same place. In 97 they came out the side in front of the right rear wheel. I love it, sounds great!