Tag Archives: YZF-R125 PCV

Yamaha YZF-R125

Making a new fuel map for bigger injector with PCV & Autotune, on yamaha YZFR125

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This video follows on from my last one and goes through the process of building a new fuel map from scratch for my 180cc YZF-R125, the way I do it, using the Dynojet Power Commander V (PCV) and Autotune (with a wideband 02 sensor).

We go through all the various components/electronic gizmos and how they interact to get to the end result of a tuned bike.

I hope this makes sense cos I had to make a bunch of diagrams and stuff for it which took forever lol xD

This video is focussed on tuning using a PCV and Autotune which is a setup that seems to be working well for me, and for this sort of moderate tuning.

I know many of you have PCFC/PC3USB etc which is a little different and can’t use autotune, and the next video will be about what your options are in that case. Thanks for your patience and I hope it’s helpful 🙂

IF YOU’RE INTERESTED IN FUEL MAPPING:

Please check out this interview I did with DynoJet UK – we covered some really interesting ground – especially if you’re thinking of buying a Power Commander (who make the Power Commanders).

Yamaha YZF-R125

Winter updates

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been a while since last post…so this will be a bit all over the place while I catch up. Apologies, please bear with me, there’s a lot to cover and some really exciting stuff to follow. Details on that as soon as I know for sure 🙂

Sooooo… the B-motor investigation didn’t go so well, scored bearing surface on the little end (wrist pin) bearing on the con-rod, which means new con-rod, which means bottom end apart and basically new crank which comes with free con-rod (or separate/re-join crank which will cost about the same as replacement). Ran out of budget on that so that’s been paused for the moment.

very expensive scratches
Continue reading Winter updates →
Yamaha YZF-R125

How to convert PCV maps to PC3USB easily (and free)

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So I just figured some stuff about how to convert Power Commander V (PCV) maps to Power commander 3 USB (PC3USB) so I’ve done a little write up of it.

You can import older PC3USB maps into the PCV, and you can import PCV maps into the PCFC, but you can’t import PCV maps into the PC3USB, and you can’t import PCFC maps into the PCV.

Except now you can…and it’s super easy to do: Read more here

How to convert PCV maps to PC3USB easily (for free)

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So whilst you can import PC3USB maps to the PCV sofware no problem, and PCV/PC3USB maps into the PCFC, what happens if you want to go the other way around? You can’t import PCV maps into PC3USB, nor can you import PCFC maps into PCV.

BTW: This should work on any bike with a PCV/PC3USB (obviously only on the same bike with each type of controller though).

Y Tho | Know Your Meme

Why tho?

This is a situation I have currently with someone who got in touch looking for a map for their R125 with a 180cc cylinder and a 160cc/min injector.

Continue reading How to convert PCV maps to PC3USB easily (for free) →