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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Fuel System: EFI/DDFI, Carb., Filter, Pump, Tank, Filler-Cap, Fuel » Fuel map adjustment « Previous Next »

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Woody1
Posted on Monday, April 20, 2009 - 09:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

There is alot of misconception about the rich condition. more fuel should be added to the rear as liquid changes to a gas it absorbs 712 btu's which lowers the CHT and EGT. Most are following the philosophy that an increase of power= an increase in temp. it should be the more energy burned = an increase in temp. most of the mods being done are intake and exhaust which are resulting in an increase of VE which causes a lean condition causing higher CHT and EGT. a lean engine burns more of the fuel in the combustion chamber, when you add fuel it isn't burning all the extra fuel. to properly tune you need to monitor the CHT and the EGT with the AFV you are receiving from your o2 sensor not just on one cylinder but both.
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Blake
Posted on Monday, April 20, 2009 - 11:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

???
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Tdman77
Posted on Monday, April 20, 2009 - 11:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

+2 ???
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Court
Posted on Tuesday, April 21, 2009 - 07:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Huh?
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Kalali
Posted on Tuesday, April 21, 2009 - 09:20 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Appears to be a response to a question...
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Aptbldr
Posted on Tuesday, April 21, 2009 - 01:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"There is alot of misconception ..."

Welcome to the forum, Woody!
"Lean is mean", so I've heard.
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Woody1
Posted on Tuesday, April 21, 2009 - 06:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

sweet
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1_mike
Posted on Saturday, June 06, 2009 - 01:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Not according to real power makers...!
Slightly rich will make more torque.
Been proven over and over.

The EPA likes lean and low timing.

Mike
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Jbolt
Posted on Friday, July 17, 2009 - 09:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The trick is to keep it from being rich or lean but just right the "sweet spot".
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