A modified YPVS controller, gives full access to the timing cycle of the exhaust power valves. By reprogramming the ypvs controller, there are lots of gains in the middle & top rpm range, as Yamaha had linearity in mind when the bikes left the factory. This is particularly true if you've changed exhausts and/ or tuned the bike but stock engines will benefit as well.
Rd500 Tzr250 Rd350 Tz250 Tzr125 Reprogrammable Ypvs Control Unit Modification on 2040-parts.com
US $54.00
Location:
Athens, default, GR
Returns Accepted:Returns Accepted
Item must be returned within:14 Days
Refund will be given as:Money Back
Return shipping will be paid by:Buyer
Restocking Fee:No
Return policy details:
This listing is for the modification of your stock YPVS controller to a fully reprogrammable unit.
You will have to send the YPVS control unit to me, I will modify it and then post it back to you.
After the modification, you will receive back your YPVS controller, along with a chart with suggested settings, to get the best acceleration and horsepower from your bike. The chart includes all Yamaha stock timings as well, from early Rd350 models up to Tz250s!
The modification is plug & play, no alterations needed to your wiring loom or any other part of the bike. Plug the YPVS control unit, set the preferred exhaust valve timing and go! Dip switches are protected from a Velcro strip (not shown in the pic).
You can also program a specific YPVS control unit to work on a different Yamaha bike as well.
This modification applies to :
Tzr250 1KT & 2MA,
Rd350 YPVS,
RD500
TZ250 up to 1990 models
...and early models Dt125, Dt200 and Tzr125.
I can also repair malfunctioning YPVS boxes. Please, contact me for more details.
Keep the 2 strokes alive!
Nick
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