TBW Cuts Out When Speed Shifting?

M

Mishi

New member
There's such a thing called "Power management" in the ECM.

Little things such as... If the ECM thinks the motor is too hot it won't just to into EITMS it will go into "Limp Mode" and only give you enough RPM's to make it to the curb.

There is also something called "Throttle Blade Control". If you snap the throttle to WOT at certain lower RPM's the ECM will not allow the throttle body to open up to 100%. Such as... 100% throttle snap at 1750 RPM's = 55% throttle, 2000 RPM's = 71.4% throttle. See attached picture.

So... it may not be the Power Commander.


-wiz
 
+1. The ecm thinks it is detecting a run away throttle, its a safety thing. Same as if you have cc on and try to shift it will cut the throttle/cc off.
 
If it's an HD thing, then why hasn't it happened to me?

Runaway throttle? I tried speed shifting once, holding the throttle wide open. Heard a lot of valve train rattle, but the bike never let up. I ride my bike pretty hard, and have never had my throttle cut out like on my two buddies' bikes that have PCV's.

Maybe it is a HD ECM thing, but it's never happened to my bike, or any other bike I've ridden without a Power Commander. Only two bikes I've ridden have done it, and they're both '09 Harleys with PCV's.

Go figure.
 
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