Holy Improvement, Bat Man!
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Freshman User
Joined: Oct 2007
Posts: 36
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Holy Improvement, Bat Man!
As some of you know, I have a 79 F150 4x4, 300, 4 speed M/T that I bought for $1K. She runs great, but man, it took a little while to adjust to how flat-out slow it was.
Enter the new Flowmaster Super 44.
Wow. Now granted, my old exhaust was a corroded pipe to a worn out muffler to nothing. Now I have a new pipe to Super 44 (2.25" on both ends) to pipe dumping out at rear wheel. I cannot believe the improvement I got for putting $100 into this thing. Better acceleration off the line, lower cruising RPM's at 60mph and I'm assuming I'm getting better MPG.
A great improvement for us six-shooters!
Enter the new Flowmaster Super 44.
Wow. Now granted, my old exhaust was a corroded pipe to a worn out muffler to nothing. Now I have a new pipe to Super 44 (2.25" on both ends) to pipe dumping out at rear wheel. I cannot believe the improvement I got for putting $100 into this thing. Better acceleration off the line, lower cruising RPM's at 60mph and I'm assuming I'm getting better MPG.
A great improvement for us six-shooters!
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
Boo-yah! I felt the same difference!
I went the whole nine yards from manifolds, 2.25-inch tubing, and Flowmaster 40s to Hedmans, 2.5-inch tubing, and bullet mufflers. Took 'er out for a test drive and had a "truck-gasm".
I went the whole nine yards from manifolds, 2.25-inch tubing, and Flowmaster 40s to Hedmans, 2.5-inch tubing, and bullet mufflers. Took 'er out for a test drive and had a "truck-gasm".
Laughing Gas
Joined: Sep 2006
Posts: 791
Likes: 62
From: Backwoods of western Pa
As some of you know, I have a 79 F150 4x4, 300, 4 speed M/T that I bought for $1K. She runs great, but man, it took a little while to adjust to how flat-out slow it was.
Enter the new Flowmaster Super 44.
Wow. Now granted, my old exhaust was a corroded pipe to a worn out muffler to nothing. Now I have a new pipe to Super 44 (2.25" on both ends) to pipe dumping out at rear wheel. I cannot believe the improvement I got for putting $100 into this thing. Better acceleration off the line, lower cruising RPM's at 60mph and I'm assuming I'm getting better MPG.
A great improvement for us six-shooters!
Enter the new Flowmaster Super 44.
Wow. Now granted, my old exhaust was a corroded pipe to a worn out muffler to nothing. Now I have a new pipe to Super 44 (2.25" on both ends) to pipe dumping out at rear wheel. I cannot believe the improvement I got for putting $100 into this thing. Better acceleration off the line, lower cruising RPM's at 60mph and I'm assuming I'm getting better MPG.
A great improvement for us six-shooters!
Posting Guru
Joined: Nov 2007
Posts: 1,305
Likes: 2
From: Montgomery, IL
Lower cruising rpms with an exhaust change? Explain that one,
With an all-out race vehicle you as much free flow as you can get(but a certain amount of back pressure is still required) but in a street vehicle you need the correct balance of back pressure.
His comments and experience does not surprise me.
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
Laughing Gas
Joined: Sep 2006
Posts: 791
Likes: 62
From: Backwoods of western Pa
This is what I was getting at. I don't care if it makes 1hp or 1000hp, if the rest of the drivetrain is unchanged, you will still be running the same rpm at 60mph with a manual trans. Automatic is a slightly different story with T/C slippage.
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