Yamaha YPVS controller modification

[yamNoCam]

Hi I'm wondering if any readers have modified PV controllers to adjust opening and closing RPM?
And if so could share details of their experience; in particular on a 1KT/2MA TZR, I hear that 6000->8600 is good for a 2MA?

Cheers
Cam

[yamNoCam]

Controller modified as per the photos at this URL.
http://s1379.photobucket.com/user/yamNo ... t=3&page=1

The mod should change the PV operation range from approx 5850-10050 to 6000-8550 RPM. The bike does seem snappier partic 8-9k but hard to be sure; I believe this mod is supposed to be worth 3-4hp http://www.bdkraceeng.co.uk/Bike2.html#TZ.

Cheers
Cam

[GrahamQLD]

Would this be the same on the TDR?

[yamNoCam]

In principle yes, but I've never even seen a TDR. I s'pose if the VPVS controller default jumpering is as per the TZR then it's a fair bet they're in a similar state of tune and the mod should produce the same result.

Cheers
Cam

[GrahamQLD]

Thanks Cam. If i get my YPVS controller out at some stage I'll do a comparison and update you.

[mboddy]

TDR has an all in one CDI YPVS controller. TZR has separate YPVS controller. The TZR forum has some guys playing around with a TDR controller to make it programmable. We just need to wait until they work it all out.

[JonW]

There is a guy in Greece who does these conversions i think, he is on ebay. Buy why not just get a zeeltronic or ignitech etc?