DynoMax Ultra Flo

Overall Rating
 4 of 5

Value Rating
 4 of 5

Used product for
1 to 3 months

Price Paid:  $85.00 from custom exhaust

Year / Model Reviewed:
2006 dynomax ultra flow

Summary:
I have a 2004 ford crown vic installed h pipe and 2 dynomax ultra flows. Right of the bat great low deep sound but not annoying. Big increase in HP and torque. Loud when you get on the gas, but very quite at highway speeds.

Strengths:
Welded construction and life time warranty.

Weaknesses:
None so far.

Similar Products Used:
Flowmaster 40 and 50 series. 40's are to loud and too much interior noise. Gave me headaches.

Overall Rating
 5 of 5

Value Rating
 5 of 5

Used product for
3 Months to 1 year

Visitors rate this review
5.00 of 5, 1.00 votes

Price Paid:  $78.00 from Summit

Year / Model Reviewed:
2005 Ultraflo

Summary:
Excellent sound on my 1998 4.6L F-150. At first it was quiet but after about 500mi it got louder & after about 1500mi it got awsome. Dynomax part #17219 is what I got it's a 14" one. You can really hear it under hard acceleration but not much louder at all when at cruise. At idle it sounds about the same as stock just a little better and louder until you rev it up then she roars. Don't know about outside sound other than idle of coarse but I'm sure it's louder out there if it's louder in the cab. Just stay outta the gas if you want it to be quieter, but when you pass on the highway they'll KNOW your there.

Strengths:
Straight through design with EXCELLENT flow. Well built, with that true glass pack sound.

Weaknesses:
It still doesn't out sell FlowDisaster muffs. I don't understand that one, or ANY other chambered muff for that matter.

Similar Products Used:
To many to list, just buy this muff you'll luv it.

Price Paid:  $150.00 from A-1 Performance

Year / Model Reviewed:
1999 GMC Sierra

Summary:
Well made, but very loud. Improved gas mileage by 2-3 mpg on highway. Created a lot of resonance in the cab. High irritating pitch under heavy acceleration. Uncomfortable drone at highway cruising speeds gave me headaches.

Strengths:
Build quality, gas mileage

Weaknesses:
Sound quality

Similar Products Used:
Edelbrock RPM

Price Paid:  $109.00 from local 4x4 shop

Year / Model Reviewed:
2002 f250 SD 4x4 5.4L

Summary:
To quiet at first but bacame louder as it broke in(or wore out).As muffler became louder outside it lost total sound control inside the cab and sounded terrible.Replaced muffler w/flowmaster and all the fiberglass was gone.

Strengths:
Good exterior sound.Muffler case was in great condition after 14 mos. of use.

Weaknesses:
Lousy interior sound after break in.Burned out fiberglass.Sounded like a 6cyl w/no muffler on inside.

Similar Products Used:
Flowmaster,cherrybomb vortech

Price Paid:  $300.00 from carline muffler

Year / Model Reviewed:
 1989 isuzu i-mark

Summary:
The dynomax ultroflow muffler is no.1, and I would highly recommend this product to either imports or domestics,it don't matter.! My ride is a 4-cyl. and i put a full straight-back ultro flo sys. in and i felt a BIG difference when "steppin on it"! When it comes to sound, the ulto flo has a deep throaty tone. On my car i took out my cat.converter, the sound was increased by alot. I mainly bought the muffler because it was stainless steel, which meant longer life and was easy to clean.

Strengths:
-straight through design, high flowing. -stainless steel shell, will last longer than any other reg. muffler. -has a awesome sound, domestic or import. [I've heard the sound on both vehicles.] -OUT FLOWS other muffler companies borla, flowmaster etc.

Weaknesses:
-very pricy, the muffler itself was about over $300 cdn. when I purchased it. -on my car, the sound is really loud and gets annoying, anything over 4500 rpm and above.[mind you I have no cat.conv.] -sounds like a motorcycle 4500 rpm and above. I have been told that I can be heard from more than 1 block away.