Grand Prix 125
Main Motorcycle: 2018 Speedmaster 1200
Join Date: Jul 2017
Location: Peak District, UK
I fitted a TEC X-Pipe last year and since then my bike has been a bit ‘lumpy’ hard to define but quite characteristic of the old Meriden Triumphs, slow throttle response, lots of engine vibration and uneven at low revs (no oil leak though).
Yesterday I was at my Triumph dealer speaking to the technician and he told me about the “12 minute adaptation” technique that I could perform to re-adapt the ECU when I fit the Trident Silencers. The WC Twin ECU is 'adaptable' by the DIY'er and 'self learns' under certain conditions (note just riding it is not sufficient to force any major changes other than temperature related ones), rather than by plugging in like I did with ECUTune on my '15 America.
Out of interest, I thought I would try it to see if it improved the bike’s lumpiness as I had not done this since de-catting her.
I let the engine cool to almost cold and performed the procedure and lo and behold it has already transformed my bike! It is so smooth on the throttle now and much less vibration. He did say he could force the ‘tune’ with his special tools/factory app, but this ‘DIY’ procedure was actually much better and individual to the bike and the conditions around it.
It’s very straight forward:
1. Do not touch the throttle throughout the procedure as it will take the ECU out of ‘learning mode’
2. Start the bike
3. Allow the bike to reach normal operating temperature (the cooling fan will start up at 190 degrees as an indicator that this has been reached)
4. Leave the bike idling for a further 12 minutes (longer is OK, but shorter will take the ECU out of ‘learning mode’
5. Turn the bike off at the key (not the kill switch – Technician told me he had used the kill switch and been successful but his instructions from a few years ago stated to turn off by the key)
6. Allow to settle for at least 2 minutes before turning back on and riding normally.
This procedure will allow all the readings to be learnt from the sensors (eg. Lambda/airflow, temp, mixture) and the ECU will adapt throughout the range with this new baseline. It also allows the ECU to understand the zero position of the throttle, allowing much quicker response when twisting the throttle. This does assume that the throttle bodies are balanced within acceptable tolerance before hand (carried out as part of standard service at 500mile and 1yr+ by Triumph)
7. For advanced ECU learning, take the bike on a highway and ride smoothly between 40 and 60 mph for at least 12 minutes, (20 is better). This will train the ECU further for operating under load.
Hope this helps.
Speedie '18: TEC X-Pipe | Handlebars: LSL Flat Track + Oxford 1 endcaps + Motone Up-And-Over Riser Kit + Riser Inserts | Corbin Solo Seat | Black rear finishers| Mid Controls