Header banner
Revain logoHome Page
🏎️ performance boost: flowmaster 527504 2.75" in(d)/2.5"(d) out 50 series muffler bb logo

🏎️ Performance Boost: Flowmaster 527504 2.75" In(D)/2.5"(D) Out 50 Series Muffler Bb Review

3

Β·

Very good

Revainrating 4 out of 5Β Β 
RatingΒ 
4.0
🌫️ Exhaust & Emissions, πŸ› οΈ Replacement Parts

View on AmazonView on Π―M

Media

(4)
img 1 attached to 🏎️ Performance Boost: Flowmaster 527504 2.75" In(D)/2.5"(D) Out 50 Series Muffler Bb
img 2 attached to 🏎️ Performance Boost: Flowmaster 527504 2.75" In(D)/2.5"(D) Out 50 Series Muffler Bb
img 3 attached to 🏎️ Performance Boost: Flowmaster 527504 2.75" In(D)/2.5"(D) Out 50 Series Muffler Bb
img 4 attached to 🏎️ Performance Boost: Flowmaster 527504 2.75" In(D)/2.5"(D) Out 50 Series Muffler Bb

Details

BrandFlowmaster
MaterialAlloy Steel
Item Weight23 Pounds
ShapeOval

Description of 🏎️ Performance Boost: Flowmaster 527504 2.75" In(D)/2.5"(D) Out 50 Series Muffler Bb

Minimal interior resonance. Mild to stock exterior exhaust tone. Excellent choice for large displacement vehicles. Improved Horsepower, Torque and Engine Efficiency. MIG welded for maximum durability.

Reviews

Global ratings 3
  • 5
    0
  • 4
    3
  • 3
    0
  • 2
    0
  • 1
    0

Type of review

Revainrating 4 out of 5

Muffler work in progress

I was told the Flowmaster would help improve fuel economy. MPG has not increased. It's too loud and scratches when accelerating. No solution yet

Pros
  • Excellent design
Cons
  • I don't remember but there was something

Revainrating 4 out of 5

Doesn't hum like an old Flowmaster

I had the same Flowmaster model on my 2000 Silverado 2500 for 21 years until the internal baffle rusted. Again it hummed at certain engine speeds/loads. I was hoping based on marketing information that the new one would be a bit quieter overall. Yes, but not as much as I would like. Fortunately, the drone is no longer available, which I like very much.

Pros
  • good stuff
Cons
  • Definitely bad product

Revainrating 4 out of 5

Amazing sound for muffler

I chose this muffler because it was perfect for my large 7.4 liter block. The sound is incredible! I didn't want anything loud, but I wanted to hear my truck through the exhaust. I hear a nice low-mid growl on start-up, but driving the interstate I can't tell the sound is any different from the stock muffler. No annoying drone. The biggest benefit of this muffler was that I got just over 1 mpg. Maybe even more if I pedal a little harder because I like the sound. The only drawback is that I…

Pros
  • Great for a small house
Cons
  • Questionable purchase for seniors