Race ECM tuning

matthewbaynard · Oct 28th, 2009, 11:58 PM

When you add the race ECM, I've been told the throttle position sensor or throttle itself needs to be adjusted. What exactly has to be done when you get your hand on the race ECM and have it installed.

Thanks.

Matthew

Hoople · Oct 29th, 2009, 12:47 AM

The throttle position sensor is a potentiometer or variable resistor. It is mechanically coupled to the throttle body butterfly. You must synchronize (or adjust) this mechanical information to the ECM so that when the butterfly is fully closed, the ECM sees that as a "Zero" reading and when the butterfly is 100% open the ECM sees that as "WOT" position.

The adjustment you make assures that the ECM knows what "Closed " is and what "WOT" is.
The process to perform this adjustment varies according to the brand or make of the system.

Hoop!

Hobbit · Oct 29th, 2009, 05:34 AM

the Screamin Eagle tuners do not need to have anything done to the throttle body or the TPS as that is one of the variables that you cannot affect on the tuning.
with items like the PCIII you do whats known as a sweep test with the bike on but not running to set the WOT and zero marks same with the Vance and Hines Fuelpak.
As you have posted this in the Buell section i am assuming you have an older Buell and looking to put the older Buell tuner on the bike, this is basically plug and play and no TPS adjustment needed.
Do you have any more info - bike, year, Tuner?

matthewbaynard · Oct 29th, 2009, 08:28 PM

Quote:

Originally Posted by Hobbit

the Screamin Eagle tuners do not need to have anything done to the throttle body or the TPS as that is one of the variables that you cannot affect on the tuning.
with items like the PCIII you do whats known as a sweep test with the bike on but not running to set the WOT and zero marks same with the Vance and Hines Fuelpak.
As you have posted this in the Buell section i am assuming you have an older Buell and looking to put the older Buell tuner on the bike, this is basically plug and play and no TPS adjustment needed.
Do you have any more info - bike, year, Tuner?

Hobbit

The bike is a 2006 Ulysses and I bought a Buell Race ECM from ebay. Was told I would need to do more than just plug and ride.

Matthew

Hobbit · Oct 30th, 2009, 06:36 AM

i take it you have a race intake and open pipe on your buell?
also yes you are correct, i did a bit of digging from my buell days its been a whiles, it needs the TPS recalibrating and you need some electronic software to do this or the dealer to use the digital Tech
software to do it yourself
ECMSPY
xoptiinside.com
but you will need a cable to allow a pc to talk to the ECM and the bike

Oct 28th, 2009, 11:58 PM	#1
matthewbaynard Start The Engine Ride: Ultra Classic Limited Join Date: Oct 5th, 2009 Location: Nazareth PA Posts: 15 My Mood:	Race ECM tuning When you add the race ECM, I've been told the throttle position sensor or throttle itself needs to be adjusted. What exactly has to be done when you get your hand on the race ECM and have it installed. Thanks. Matthew

Oct 29th, 2009, 12:47 AM	#2
Hoople Contributor$ Ride: 2009 Dyna Low Join Date: Aug 16th, 2009 Posts: 506	Re: Race ECM tuning The throttle position sensor is a potentiometer or variable resistor. It is mechanically coupled to the throttle body butterfly. You must synchronize (or adjust) this mechanical information to the ECM so that when the butterfly is fully closed, the ECM sees that as a "Zero" reading and when the butterfly is 100% open the ECM sees that as "WOT" position. The adjustment you make assures that the ECM knows what "Closed " is and what "WOT" is. The process to perform this adjustment varies according to the brand or make of the system. Hoop!

Oct 29th, 2009, 05:34 AM	#3
Hobbit Moderators Ride: 2009 FAST 103 Street Bob Join Date: May 18th, 2007 Location: The Shires UK Posts: 7,616 My Mood:	Re: Race ECM tuning the Screamin Eagle tuners do not need to have anything done to the throttle body or the TPS as that is one of the variables that you cannot affect on the tuning. with items like the PCIII you do whats known as a sweep test with the bike on but not running to set the WOT and zero marks same with the Vance and Hines Fuelpak. As you have posted this in the Buell section i am assuming you have an older Buell and looking to put the older Buell tuner on the bike, this is basically plug and play and no TPS adjustment needed. Do you have any more info - bike, year, Tuner? __________________ Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. >>Self Help Information and Tips<< click me!

Oct 30th, 2009, 06:36 AM	#5
Hobbit Moderators Ride: 2009 FAST 103 Street Bob Join Date: May 18th, 2007 Location: The Shires UK Posts: 7,616 My Mood:	Re: Race ECM tuning i take it you have a race intake and open pipe on your buell? also yes you are correct, i did a bit of digging from my buell days its been a whiles, it needs the TPS recalibrating and you need some electronic software to do this or the dealer to use the digital Tech software to do it yourself ECMSPY xoptiinside.com but you will need a cable to allow a pc to talk to the ECM and the bike __________________ Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. >>Self Help Information and Tips<< click me!

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