Screamin Eagle Heavy Breather
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Road Master
Joined: Dec 2009
Posts: 1,118
Likes: 5
From: Coweta, Oklahoma
Screamin Eagle Heavy Breather
I had my doubts, but I did as the HD service tech told me. I had installed last week the SEPST in the Super with a fuelmoto highflow a/c that I already had on the bike and the bike dynoed at 77.47 hp and 89.10 lb ft tq. That made a huge difference over the stock ECM settings, but that wasn't enough for me, hp junkie I must admit. I installed the Screamin eagle heavy breather and had it touch-up tuned and what a difference that made. Dynoed at 81.12 hp and 95.44 tq. I would have never believed a air cleaner would make such a difference. Not bad numbers for a stock 96.
Last edited by Jeff's 1st Harley; Sep 17, 2012 at 06:29 PM.
Cruiser
Joined: Nov 2011
Posts: 136
Likes: 0
From: California
'scuse my ignorance on this heavy breather contraption,but u think I could expect similar gains on my bike? 2000 fxdwg (carbed not injected).Its got T.Header,510 cams,and an open element k&n.The carb was jetted to match intake and exhaust and a thunder slide installed as well.Its in excellent tune with perfect tan plugs,and no popping. I've never really liked the looks of the snorkel,but if I can pick up 3 horse and 5 ft lbs I might have to rethink the whole matter... 
Thread Starter
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Road Master
Joined: Dec 2009
Posts: 1,118
Likes: 5
From: Coweta, Oklahoma
'scuse my ignorance on this heavy breather contraption,but u think I could expect similar gains on my bike? 2000 fxdwg (carbed not injected).Its got T.Header,510 cams,and an open element k&n.The carb was jetted to match intake and exhaust and a thunder slide installed as well.Its in excellent tune with perfect tan plugs,and no popping. I've never really liked the looks of the snorkel,but if I can pick up 3 horse and 5 ft lbs I might have to rethink the whole matter...
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