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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


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  #11  
Old Sat, January 16th, 2010, 09:22 PM
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DarrenWS6 DarrenWS6 is offline
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Quote:
Originally Posted by 88Racing View Post
Here's magnaflows web site:
http://www.magnaflow.com/02product/s...ayproducts.asp
Heres a roush kit:
Roush Performance - JEGS High Performance
By DarrenWS6:
For a cat-back swap only, I also would suggest the Roush Off-Road. I still wish I had gone with it. The best performing exhaust is a 3" single for these trucks, with a 3" single tailpipe or dual 2.5" tailpipes.

One of the absolute best set=ups would the the Dynatech LT setup with Magnaflow hi-flow cats and Y pipe ( avail. as kit for $1400 from Troyer ) to a 3" single exhaust with a straight through muffler.

I noticed a little loss when I had my 2.5" true duals done. I had to have the sound though. True duals is not a good performance exhaust unless theres a cam and supercharger to back them up, otherwise stick with 2.25" for better scavenging. I couldn't bark the tires from a WOT punch after I got my exhaust, was able to again when I removed my rear converters, and i'm able to leave a couple black dashes with the Gryphon lol.

In general terms, my suggestion would be run 3" from the Y to a straight through muffler of some type ( Magnaflow, Roush kits, Bassani, Borla.. ) end quote.

Magnaflow probably makes the best kit and or components on the market right now.
Thats pretty sweet you were able to retreive that input because I lost it.

It is true though, but I must correct one thing, I do love my exhaust much more than the Roush cat-back, its much louder, and doesn't pop. Still lost a little low end especially with my Toyo 33s but its still peppy with the Gryphon tune.
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Performance: 2.5" True Duals X piped, Rear Cats Deleted, Magnaflow 11" Bodies, Magnaflow 4x18 Rolled Tips.
Suspension: Bilstein 5100 Leveling Struts & Rear Shocks. 20"x9" KMC XD Monsters, 33x12.5 Toyo M/Ts
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  #12  
Old Sun, January 17th, 2010, 12:58 AM
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Quote:
Originally Posted by DarrenWS6 View Post
Thats pretty sweet you were able to retreive that input because I lost it.

It is true though, but I must correct one thing, I do love my exhaust much more than the Roush cat-back, its much louder, and doesn't pop. Still lost a little low end especially with my Toyo 33s but its still peppy with the Gryphon tune.
Darren,
You are just good at exhaust!
If migdaddy was over here I would have quoted him too!
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