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Northcust becomes UK/EU distributor for Tuneboss ECUs \o/

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Ok so I’m quite excited about this. It’s been in the works for coming up to a year now but till we reached a particular point where we were both happy, I’ve had to keep things kinda under wraps.

Several years ago, sparked off by a conversation with Legend of Legend’s Garage (who used to do a fair bit of R125 stuff), I learned about Tuneboss ECUs, which seem to be quite popular in the R125 racing community (in europe anyway).

I got in touch with Tuneboss but since the previous ECUs were a limited run there were simply none to be had.

3 years pass and then I get an email asking if I’m still interested in buying a few ECUs. At the time I was just looking to buy 2 or 3, mostly for my own usage but perhaps for a few other friends if they were interested.

Either way, we got chatting and things escalated and whilst the UK/EU market is small compared to the Asian market, they wanted to have a presence here.

image shows an A4 plaque which reads "Tuneboss Authorized Distributor, UK & EU"
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Yamaha YZF-R125

YZF-R125 injector swap

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So there’s been a few discussions on the forums recently about different injectors, and I happened to film when I swapped my injector over so figured it might be useful.

It’s a pretty straightforward process…as long as you don’t mess it up.

At which point it would become very complicated. So really don’t do that.

I have a theory – that on a stock R125 which has perhaps a slip-on ((or full exhaust) and a K+n filter, that a 120cc/min injector would make a really cheap, convenient upgrade.

When mine was tuned like that the fuel map was adding about 20% across much of the map. Not all of it but enough for it to potentially make a difference where it matters.

And here’s the link to the 120cc/min injector. As far as I’m aware stock is 100cc/min, so that would give you a 20% bump across the range.I’ll just leave this link here: https://www.aliexpress.com/item/32921…

My problem currently is that I don’t have a stock bike to test the idea on…though I’m hoping i’ve found a volunteer. Watch this space 🙂