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Rlo
Dodge Dakota
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7/13/2002
16:14:55
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 Subject: 4.7 Exhaust performance
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Message:
Hey guys, I love my 2001 4.7 dakota....but like everyone else i wanted a little more power and gas efficiency. So I had a flowmaster 40 series 2 chamber exhaust installed....no other piping just the muffler. All excited I went to pick it up.....it had the sound I wanted but, its lowend torque was horrible...and I didnt really notice much power topend either...Come to find out I got like 3 small exhaust leaks....anyone know why i lost so much power? Anyone have a exhaust system they got good power from ?
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R.L.Stuart
Dodge Dakota
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7/13/2002
17:32:33
|  RE: 4.7 Exhaust performance
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Message:
When I removed my exhaust manifolds to install the headers we found three leaks and a missing bolt and both flanges were leaking,Check that first and the flanges,Good Luck!
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Cotharyus
Dodge Dakota
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7/13/2002
17:36:45
|  RE: 4.7 Exhaust performance
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Message:
I've heard time and again that the 4.7 reacts very poorly to exhaust mods. Every time, its the same thing, major loss of low end torque. For that reason, my 4.7 is still basicly stock, and as of right now, I have no plans of changing anything in the exhaust system since I tow about 3 days a week. I do have a serious jones for a set of HO cams, but thats going to have to wait till I have some extra cash. As for exhaust, I've been told that the gibson single out sport truck exhaust has a less detrimental effect on the 4.7's performance than other systems.
2001 QC 4.7 5spd
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WallyR
Dodge Dakota
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7/13/2002
18:16:11
| RE: 4.7 Exhaust performance
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Message:
I got good results from the Gibs Dual Sport catback, but at the same time I freed up the intake side with an AirForce One intake. You gotta enhance both sides (intake and exhaust) or you can easily lose power instead.
Wally
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handi2
GenIII
7/13/2002
22:26:40
| RE: 4.7 Exhaust performance
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Message:
It seems that when you change the exhaust you need to enlarge the throttle body. Then your back where you started..! Save your money for computer upgrades.
http://photos.yahoo.com/handi254310
2002 Quad Cab SLT Plus 4.7 Every Available Option
Access Tonnoue Cover/Bedrug/360 Air Intakez/Jet Stage 2
180 Robertshaw/Roadmaster Active Suspension
Street Scene Grill Inserts
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conig
Dodge Dakota
JOIN HERE
7/14/2002
16:47:37
| RE: 4.7 Exhaust performance
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Message:
replace the cat.
why free up the resistance after the real restriction in the exhaust and expect horspower?
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