Dynomax Ultra Flo vs Walker Muffler Comparison - sound levels and sounds!
We've compared two mufflers in search of quiet(er) performance.
*EDIT* Dyno results
are in! 443 rwhp and 490 rwtq. Taking into account the 1.5 degrees of
timing we added, the mufflers cost NO power. Before we made 422 rwhp and
EDIT EDIT: Car has run a best of 10.77 @ 128 so far... still some left in
EDIT EDIT EDIT: The car turned a 10.55 @ 129.3 and the block and trans let
go. A Dart 363 and a built Powerglide are going in!
30ft Flamethrower exhaust!
Video shot at frankensteiners ball in Anoka MN, October 20, 2013. Was a
great show, have lots more footage of the show on my channel. Please
subscribe and check out my channel to see more :)
Sound Testing: Flowmasters 8 Hottest Mufflers
To view these products click below:
We test 8 of Flowmasters most popular mufflers for street cars to muscle
cars to full blown race cars! From mild to aggressive, find out which
muffler is right for your car and get that classic Flowmaster sound.
Walker SoundFX 17809 - Ram 1500 4.7L
Just a quick video of my 04 Ram 1500 with the 4.7L v8. I replaced the
flowmaster 40 series that rotted off and wanted something quieter. This
muffler has a good low rumble and with the tailpipe it has almost no noise
in the cab. I got the 3" version because that's what I was told I needed
but I think it's 2-3/4" that I need. Oh well, I cut some spare 3" pipe and
slotted it to make a shim of sorts and clamped it down. Tailpipe is a
Magnaflow 15003 universal SS 3". All told I have less than $100 into the Exhaust.
Chevrolet Silverado 4.3 walker muffler
This is a stock single 2 3/4 exaust pipe with catalytic converter delete
and a cheap walker soundfx muffler.
I'm happy with it, 55$ and it just quiet enough. Sadly I can't say what did
what as far as sounds goes since I removed the (internally shattered)
catalatic converter at the same time.
It sounds better than stock but I don't know if it's louder because the
cat is no longer there or if it's the muffler that's louder.
first vid: open loop (cold start)
second vid (closed loop, o2 sensor kicked in)
third: rev to 3k
four and fifth: acceleration with and without clutch
Magna-volt (boostapump) demo after install in 1997 Buick Riviera
The video captures the sounds coming from the fuel pump as I go through the
operating speeds: low speed, full speed, and Boosted speed. Low/high speed is controlled by
the PCM via a pulse width modulator that's part of the fuel pump circuit.
Per factory settings, full speed is commanded on when the PCM recognizes a
manifold pressure of 90kPa (about 3in/hg of vacuum) which is a condition of
some throttle but not quite enough to get into Boost. It returns to reduced speed once the
pressure falls below 80kPa. With the addition of the Magnuson fuel pump
voltage Booster, the fuel pump gets
extra voltage once the engine hits 3-4psi so the result is three distinct
operating speeds for the fuel pump. The fuel pump its self is a Racetronix
modified Walbro 255lph pump so if you're comparing this to a stock fuel
pump, it'll sound different.