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Best performance mod?

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Old May 6, 2007 | 08:38 PM
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fatboy jim's Avatar
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Default Best performance mod?

I have a 2003 fatboy. Pretty stock. Just put V&H competition drag pipes on!!! Love them. I was wondering what you guys think is the BEST performance upgrade for my Fatboy...Carb...Heads..trans..whatever. Thanks for any advice.
 
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Old May 6, 2007 | 08:40 PM
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Default RE: Best performance mod?

Probably the best initial thing you could do is put on some performance pipes and a air cleaner upgrade and power commander.
 
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Old May 6, 2007 | 08:43 PM
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Default RE: Best performance mod?

can youuse a power commander on a carburated bike?
 
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Old May 6, 2007 | 08:43 PM
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Default RE: Best performance mod?

Air cleaner and jet your carb.

Then heads/cam is your best power adder.

It's all a package deal and doing one without the other will not net you the best gains.

 
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Old May 6, 2007 | 08:45 PM
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Default RE: Best performance mod?

You know jim I can't answer that!
I'm sure someone will chime in with the correct answer.
 
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Old May 6, 2007 | 08:46 PM
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Default RE: Best performance mod?

ORIGINAL: fatboy jim

can youuse a power commander on a carburated bike?
No.

You need an ignition module and a rejet.

 
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Old May 6, 2007 | 08:48 PM
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Default RE: Best performance mod?

Good info..I've been leaning towards putting a new Mikuni carb and the screaming eagle air cleaned..like yours Hammer (nice Bike).
 
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Old May 6, 2007 | 09:11 PM
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Default RE: Best performance mod?

Thanks Jim. I wouldn't throw out the stock carb...they aren't bad. You will just need to rejet to match performance.

The Mikuni is nice though. Your call.

P.S. Thanks.
 
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Old May 6, 2007 | 10:01 PM
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Default RE: Best performance mod?

Drawing on from this post, i have a screaming eale air filter and pipe on my carbed 02 Deuce and have been thinking about binning the air cleaner for a kurakyn hypercharger.

Would I be better of with a performance ignition module and re-jet? I can see how the hyperchargers flow better but are they more show than go than just a screaming eagle air filter?
 
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Old May 6, 2007 | 10:06 PM
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CNC WHEEL GUY's Avatar
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Default RE: Best performance mod?

ORIGINAL: fatboy jim

I have a 2003 fatboy. Pretty stock. Just put V&H competition drag pipes on!!! Love them. I was wondering what you guys think is the BEST performance upgrade for my Fatboy...Carb...Heads..trans..whatever. Thanks for any advice.
Change the primary gear ratio to a 3.37 (from the stock 3.15) and here is why:

https://www.hdforums.com/m_1600480/tm.htm

-Denis
 
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