Yep, Flowmaster Cat back, 3" W/ 40 series muffler. Dyno showed 1.9 rwhp gain,
average over 3 pulls. Thats a sad 2.3 flywheel HP improvement (170 bucks).
It does sound good though.
I look at as the 3rd piece to an exhaust puzzle.
1st peice is the headers.
2nd peice would be a custom Y-pipe with improved mini cats, removal of the
3rd cat and increase intermediate pipe dia. to 3" from the Y-pipe to muffler.
3rd would be the cat back system.
Then you'll see about 10-20 HP increase.
Matt Y2K-HEMI
'00 RC 4.7L 5spd
In a message dated Fri, 22 Dec 2000 9:51:22 AM Eastern Standard Time,
Stlaurent Mr Steven <STLAURENTS@mctssa.usmc.mil> writes:
<< Hmm! Try like 1.9rwhp. Talk to Matt, he had the Flowmaster check on the
Dynojet.
-------------------------------------------
Steven St.Laurent
Test Engineer
Test Branch, GSD, MCTSSA
MARCORSYSCOM, USMC
760-725-2506 (DSN 365-2506)
Work:mailto:stlaurents@mctssa.usmc.mil
Home:mailto:saint1958@home.com
-----Original Message-----
From: Viper450hpGTS@aol.com [mailto:Viper450hpGTS@aol.com]
Sent: Thursday, December 21, 2000 1:50 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: Flowmaster on a 4.7L
I dunno about the 70 Series but I'm using a 40 series 3" cat back (inlet)
and
dual 2.5" outlet. It sounds sweet and might have added 10hp or so....
James
'99 Flame Red RC Dakota R/T
'01 Black 4.7L RC Dakota Sport (5-speed & 3.92 gear)
>>
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