Flowmaster 40, all 4 cats taking off? - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 09-07-2010
Blhde's Avatar
Join Date: Oct 2005
Location: Northern IL
Posts: 2,804
Originally Posted by Mistersponge View Post
Hmmmmmmm raspy as ****...
Thats what a flowmaster sounds like not sure what you were expecting.
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Old 09-09-2010
HouseofFinch's Avatar
Join Date: Sep 2010
Location: Calgary, Alberta
Posts: 28
you won't loose power, you might gain a little. Stock exhausts are highly restrictive. To get the most you will need to get more air into the engine. Like an un-restrictive intake. Engines are just air pumps, what goes in must go out. Just don't go to big 2 1/2 is plenty, remember it's not a top fuel dragster...
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Old 09-10-2010
WowMike2001's Avatar
Join Date: Oct 2007
Location: Stevenson, WA
Posts: 2,583
Originally Posted by Blhde View Post
Thats what a flowmaster sounds like not sure what you were expecting.
Mine sure doesnt sound quite like his - its all in how the exhaust works, and changing out the cats/cutting them out has a huge change in what the exhaust will sound like. I prefer a mellow stock cat system with a super 40 - doesnt sound raspy in the least.
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Old 09-26-2010
Join Date: Jun 2010
Location: Somewhere, MN
Posts: 41
i just tru a true glasspack on my 91' 4.0 with a 45* turndown dumped behind rear axle, 2" pipe, stock from manifold to the pack, sounds pretty dang good, nice low idle and not raspy at all.
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