Dual Exhaust
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Mountain Pass
Joined: May 2005
Posts: 209
Likes: 0
From: Arizona
Dual Exhaust
Approximately how much of a horsepower gain can I expect by converting to dual exhaust using stock mufflers and exhaust manifolds on my 1995 F150 5.0L.Also what problems should I expect.
Lead Driver
Joined: May 2011
Posts: 5,776
Likes: 443
if youre keeping factory tuning, even the highest flowing "true duals" will do nothing for you. long tubes into a y-pipe will net you the greatest seat of the pants gain vs any other setup, short of a "racecar-esque" top end setup, where true duals will net the greatest gains in high rpm (horrible for a street driven truck)
get long tubes, fab a free flowing 3" y-pipe, and just run the single.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Your biggest gain in HP and MPG for the money is replacing the factory y-pipe/converters with a high-flow version. Whether you want to go the extra steps for long tube headers and a custom exhaust is up to you.
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Mountain Pass
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Fleet Mechanic
Joined: Jun 2011
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From: Conway, South Carolina
only things duals might give you it better mpg, but thats without cats, or with high flow.
Also like Rla2005 said, do a good tune up. I run my timing at 15 degrees, book calls for 10.
Also how many miles are on your motor, and how long since the timing chain was replaced?
A wore chain will cut your power, cause the cam will be laging behind alittle
Also like Rla2005 said, do a good tune up. I run my timing at 15 degrees, book calls for 10.
Also how many miles are on your motor, and how long since the timing chain was replaced?
A wore chain will cut your power, cause the cam will be laging behind alittle