4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Longtubes

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Old Nov 26, 2008 | 06:12 PM
  #21  
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avlon06
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Originally Posted by defconfire
IMHO Long tubes are definitely worth it. The gain in hp Definitely makes a big difference.
i believe you, but you know there are people out there that will say you only gain like 7hp.. weak!
Old Nov 26, 2008 | 06:16 PM
  #22  
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I have before and after dynos.. I gained 11.5rwhp and 9rwtq at the peak, and about 4-5 throughout the midrange. This is going from stock headers, stock midpipe, and a magnapack catback, to bbk lt's with bbk o/r h pipe with the magnapack catback. From what I hear, the main hp difference is the o/r midpipe. I haven't seen a shorty header dyno comparison but those are my results.
Old Nov 26, 2008 | 06:52 PM
  #23  
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After I got the longtubes installed I thought I was spinning the tires leaving the shop. All I had at the time before them were the gears and slowmaster mufflers.
Old Nov 26, 2008 | 08:28 PM
  #24  
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Originally Posted by Blk N Wht GT
I have before and after dynos.. I gained 11.5rwhp and 9rwtq at the peak, and about 4-5 throughout the midrange. This is going from stock headers, stock midpipe, and a magnapack catback, to bbk lt's with bbk o/r h pipe with the magnapack catback. From what I hear, the main hp difference is the o/r midpipe. I haven't seen a shorty header dyno comparison but those are my results.
yep. i have a before and after on the same sheet showing the gains. it was about the same as yours. the sad thing is.... my car was running 16psi on a T trim with stage 3 heads and blower cams when i finally got LTs!
Old Nov 26, 2008 | 11:33 PM
  #25  
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Originally Posted by nanaki
yep. i have a before and after on the same sheet showing the gains. it was about the same as yours. the sad thing is.... my car was running 16psi on a T trim with stage 3 heads and blower cams when i finally got LTs!
Hmmm.. Just goes to show that I guess LT's don't really gain more on a FI'd engine
Old Nov 27, 2008 | 12:03 AM
  #26  
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I love my exhuast set up. I was told that the shorties and long tube's may be a 5 to hp diff. Is this true? When I get he dyno tune I'll post a exhuast clip....
Old Nov 27, 2008 | 12:35 AM
  #27  
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Originally Posted by Soldier GT
I love my exhuast set up. I was told that the shorties and long tube's may be a 5 to hp diff. Is this true? When I get he dyno tune I'll post a exhuast clip....
From what I hear (and saw from my dyno graphs) it is a 5hp-ish difference. Not too much

BTW, I love the way the red/black goes together
Old Nov 27, 2008 | 12:45 AM
  #28  
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I bought it off ebay. It say's ford racing. Man talking about a head turner..
Old Nov 27, 2008 | 12:47 AM
  #29  
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Originally Posted by Soldier GT
I bought it off ebay. It say's ford racing. Man talking about a head turner..
Huh? Are you talking about your car?
Old Nov 27, 2008 | 01:01 AM
  #30  
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My bad man. If you look at the rear of my car it has some black letter's (Ford Racing logo). That's what I was talking about. Also thank's and I most def like what you did to your ride.



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