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Georgia DAWG
Dodge Dakota
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8/10/2003
19:51:24
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 Subject: Soupin it up with FLOWS
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Message:
i got a 2001 4.7 and i was wonderin if adding flow masters with a single inlet and dual outlet would increase horsepower and make a deeper louder sound, also what size pipes should be used
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gotanRT
Dodge Dakota
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8/10/2003
22:49:43
|  RE: Soupin it up with FLOWS
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Message:
if your engine is stock you will lose power but yes it will b louder...2 1/2" to 2 1/4"
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Dodge Power
Dodge Dakota
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8/12/2003
03:33:04
| RE: Soupin it up with FLOWS
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Message:
Is your stock exhaust 2 1/4 or 2 1/2? You will not lose power swapping a stock muffler to a flow. You may not gain much without changing the stock cats and manifolds but changing mufflers with a flowmaster the same size as your current pipe will not at all lose power.
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Georgia DAWG
Dodge Dakota
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8/12/2003
19:28:34
| RE: Soupin it up with FLOWS
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I have a 2.5" now and i'm gonna keep that size but just change the muffler to a single in and dual out... i know i won't gain much horse but i will gain the noise:)
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Dodge Power
Dodge Dakota
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8/13/2003
01:29:41
| RE: Soupin it up with FLOWS
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Message:
Yeah, definatelyl louder. The 40 series 2 chambers are Flowmaster's loudest that I know of. Swap out your stock cats if you can find a shop that does it, and you can start gaining some hp and more noise. Carsound converters which created Magnaflow mufflers are a good aftermarket catalytic converter.
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01Motorsport
Dodge Dakota
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8/13/2003
11:51:24
| RE: Soupin it up with FLOWS
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I'm extremely happy with my Flowmaster 70 with 2 1/2" custom duals. I actually had the same setup on my former '92 5.2 RC, so I can double verify how well it works. Combined with less air intake restriction (I use a K&N drop-in w/alloy homebrew), I picked up a solid 1 mpg and bunches of throttle response and performance. The air intake was the key; performance difference with just the exhaust was minimal. You have to consider that D-C did an awesome job from the factory with exhaust manifolds that flow within 2% of headers on the 4.7. The 70 series muffler (also called Big Block) sounds similar to the 50 series out back, but lets very little noise come through the floorboard.
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