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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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  #1  
Old Sat, December 26th, 2009, 08:20 AM
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Here's magnaflows web site:
http://www.magnaflow.com/02product/s...ayproducts.asp
Heres a roush kit:
http://www.jegs.com/webapp/wcs/store...=mode+matchall
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.

Last edited by 88Racing; Sat, December 26th, 2009 at 08:38 AM.
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  #2  
Old Mon, December 28th, 2009, 09:13 AM
bamagrad00 bamagrad00 is offline
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That is great info!! Thanks so much. I have researched these 2 and had narrowed it down before your answers. What would you suggest?: buy the muffler and let the muffler shop put the pipes in or buy the whole cat back and install myself. It does not look very hard and have access to a welder if needed for the tips.
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Old Mon, December 28th, 2009, 10:26 AM
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Quote:
Originally Posted by bamagrad00 View Post
That is great info!! Thanks so much. I have researched these 2 and had narrowed it down before your answers. What would you suggest?: buy the muffler and let the muffler shop put the pipes in or buy the whole cat back and install myself. It does not look very hard and have access to a welder if needed for the tips.
Yes you can buy just the muffler and have an exhaust shop do the piping.
Try to find exhaust shops that use mandrel benders.
The other thing is I don't know if its a big deal or not but your stock exhaust is stainless steel. If you do go with a shop they are going to probably install aluminized tubing which will only last 2-5 years depending on where you live.
Going to a shop with a muffler and tips already bought you can save youself some money over the price of a kit.

Now my friend runs an exhaust shop and charges $75 to install exhaust kits.

I did my truck with 2 different kits, didn't like the sound of the first kit and yes they are pretty easy to do by yourself but you need some skills and sometimes the kits need tweeking or hangers added/relocated.

I would just go start getting prices at 2 or 3 shops and keep in mind what the kits cost.
Just remember both the kits I gave you links to are full stainless steel kits with mandrel bends.
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Old Mon, December 28th, 2009, 12:06 PM
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From what I have seen in the past is usually cheaper to have an exhaust shop do it rather than buying a kit. I generally buy the muffler and take it to them unless they want to do a price match. And on the plus side you have everything welded in, instead of clamped.

Down here I really have no need for stainless since we never see salt in the winters...but if you do see salt in the winter then stainless is what you want.
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Old Tue, December 29th, 2009, 10:40 AM
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Went with the magnaflow kit. I got it from autoanything for 435 with the discounts they gave me. That was the best price. I am going to try and install myself and then tack the tips on. Thanks again for all the advice.
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Old Fri, January 1st, 2010, 01:18 AM
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Good deal! You won't be disappointed. The kit is pretty easy to install with the hardest part being fitting the pipe around the axle. You'll want to lift the rear end a bit to get more clearance between the bed and axle. Also, make sure you use jack stands to hold the truck up. Safety first!

Take pics. We could use a good thread on exhaust installation.
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Old Sat, January 16th, 2010, 08:22 PM
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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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  #8  
Old Sat, January 16th, 2010, 11:58 PM
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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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