ECM Hack- coolant temp sensor

[rug_burn]

     Does anybody remember that mod you can do to keep the spark advance  where it should be for performance?     And tell me where to find it?
   This has to do with the the fact that the engine control module (ECM) retards the spark timing between idle and about 3000 rpm once the engine coolant reaches operating temperature.  The idea, IIRC is to add a resistor somewhere, (in parrallel) with the temperature sensor to 'trick' the ECM into leaving the advance set for performance, not easy or conservative riding.    There was one circuit I recall  that had a potentiometer to make it adjustable, and I made a copy of the whole thing, but of course, I can't find it now, years later....
    Some of the old timers here, I'm sure, know what I'm talking about.   
    Thanks-

[HayHauler]

I think you are looking for the ECT MOD found here:

https://www.valkyrieriders.com/shoptalk/ect-mod.htm

Hay 
Jimmyt

[Joe333x]

This is what you're talking about about.
https://www.valkyrieriders.com/shoptalk/ect-mod.htm?fbclid=IwY2xjawI-wZZleHRuA2FlbQIxMQABHd3dZSaSbdL-sL1-9__kKytxz-4hWj3hR8i5vIucCcppxn9M5Iyy8WxFIg_aem_qomFXBPpSvrS84poM1jCwA
 Alternatively you can also use a 4° wheel on an I/S or 6° on the rest.
https://cyclemax.com/products/gl1500-valkyrie-trigger-wheel

https://shop.hondadirectline.com/honda-direct-line-trigger-wheel-6-degree-gl1500-gold-wing--valkyrie-detail.htm?productid=-8001312

[98valk]

once the engine is at operating temp, it doesn't like all that extra advance 2k rpms and below. the mod provides a 4 extra degrees at 3k rpms where it then goes to zero additional advance.
so a little help for better mpg at 3-33k rpms, little more when using a 4-6 degree TW.

see curve here
https://www.manualslib.com/manual/396434/Dynatek-D3k1-1revd.html?page=2#manual

[rug_burn]

Thank you very much, gentlemen... that's what I was looking for.