If you'd like a bunch of audio clips and flow bench data for a couple dozen
different mufflers, Tom Hand publishes a CD ROM with this for $10 called
"Silent Power". It will let you make informed tradeoff decisions between
sound level, tone and flow data. Either buy it at
http://www.performanceyears.com/ or email Tom Hand at thand@kc.rr.com and
he'll ship you one for the same $10. This is a Pontiac V8 community
oriented product, and the author is also a long-time small-block mopar
muscle enthusiast.
My interpretation of the data was to use a pair of Walker Dynomax Hemi Super
Turbo 17749 and an "X" synchronizing crossover for the 2.5" duals on a
"quiet" daily driver 455 Pontiac car, a Goerlich XLerator X140 or X141 model
http://www.goerlichs.com/goerlichs/products/mufflers/gxlerator1.htm for the
3" single exhaust on a small-block pickup with a "quiet" single exhaust, and
a pair of Goerlich X123's with an X for the "throaty" 3" duals on a
mid-sized big-block muscle car.
Mike Farich
farichms@westol.com
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of Bill Knight
> Sent: Saturday, February 15, 2003 8:13 AM
> To: dakota-truck-moderator@bent.twistedbits.net
> Subject: DML: Dynomax muffler for 5.9
>
>
>
> Slightly OT but I don't think enough for the OT list. I just got a 2000
> Durango SLT with th 5.9 engine. Traded in the 97 Dakota with the 3.9.
> Loved the Dakota but family is growing and now so are the gas
> prices. Well
> the first tank I got 17MPG. I put a Dynomax Turbo on the Dakota
> and and got
> a significant torque and MPG gain for the cost. I'm looking at
> one of three
> Dynomax mufflers from Jegs.
>
> Boss Turbo: $16.99
> HD super turbo: $62.99 (Primarly RV/towing)
> Super Turbo: $34.99
> Ultra Flo: $106.99
>
> Found the sound clips between the Flowmaster and Dynomax and
> liked the Ultra
> flo the best. The top three are oval and not sure if they will
> fit easily.
> I'm hoping for mainly MPG increase. I know that with the 5.9 I
> can't expect
> the 20MPG I was getting with the 3.9 but hoping for better. I'l
> be getting
> the plugs (3923) and putting my homebrew cold air intake on
> today. If I can
> get an average of 18-19 MPG with these additional mods I'll be
> happy. I can
> afford to get the Ultra Flo, I just want to make sure that would
> be the best
> purchase or if I should go slightly cheaper. Thank you for all input.
> Bill
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