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10:41:05 - 04/23/2024
V6 Dakotas
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Carl Vick
Dodge Dakota
JOIN HERE
6/01/2002
02:26:37
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 Subject: Exhaust
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Message:
Ok this is probally a dumb question but im only 17 lol ok heres my problem i want to put true dual exhaust on my truck (a pipe from each manifold) on a 3.9 v6 98 dodge dakota a few people who i have asked said u cant do it because all the exhaust gas has to go through an 02 sensor now how would i go about doing this do i need to add another o2 sensor to the other pipe? please help me!!!!
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Todd W
GenIII
6/01/2002
09:46:52
|  RE: Exhaust
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Message:
I know you can split it into two directly behind the last Oxygen sensor. But why? Everyone who has done it has reported a -serious- loss of low-end power do to insufficent back pressure. You'd be better off just running a standard Cat-back at 2.5" (I think) to a single-in dual-out flowmaster and then coming out with two pipes out the back. It'll look like duals, and since it's only after the muffler, your back pressure should remain sufficent.
'00 RC Sport Forest Green, 3.9L, 5-speed 3.55, Hurst Comp-Plus Shifter, Clear-Corners, Speed-Glo gauges, Airaid Intake with relocated IAT, Autolite 3923s, Ported Throttle Body, Borg & Warner Cap/Rotor, Accel Coil, JBA 9mm Wires, JET Stage II
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speedtuba
GenIII
6/01/2002
10:10:11
|  RE: Exhaust
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Message:
I put on JBA headers, a CarSound Cat, and a Flowmaster "40" (single in-out). I wouldn't call it a "serious" loss of low end power, but suffice it to say, ALL of my power runs from 2200 RPM and up. True duals probably are a little excessive. Not only do you loose back pressure, but you loose pressure consistency between the two manifolds. That's why you see a lot of today's dual exhausts with X pipes and the like.
If you want two pipes, either follow Todd's suggestion (single in - dual out) or split the pipe b/w the cat and the muff and put two muffs on.
My 2 cents.
W. Patrick Jones
98 Dakota Sport 3.9L
Emerald Pearl Coat
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FlameRed01
Dodge Dakota
JOIN HERE
6/01/2002
11:37:32
| RE: Exhaust
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Message:
you can get around the cat problem by buying a "katbox" at www.krcperformance.com but why do you want true duals on your sixer??? just get a cat-back system and get the good sound and gain some performance
http://flame-red-dakota.2itb.com
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