Below are the available bulk discount rates for each individual item when you purchase a certain amount
● YUMINASHI POWERSPORTS ECU FOR MSX125 SF/GROM125 SF (2017 - 2019) NON-ABS VERSION
● A totally new powerful base map has been created for the auto-tune version of the MSX125 SF/GROM125 SF Powersports ECU.
Installing this ECU is really something you want to do from the first day you are buying your MSX/GROM125 SF, because this easy to install, and low cost upgrade, will add a lot of attitude to your little mini bike!...
Installing the 125 SF Powersports ECU with part number 38770-K26-B02S is really child's play because this version of the Powersports ECU has been specifically developed for the NON-ABS MSX/GROM125 SF.
This means that this ECU is truly plug & play, which actually means that you won't need to pull out any wires from your stock wire harness to install the ECU, since the install is simply done with removing the stock ECU and replacing it with the new Yuminashi Powersports ECU.
● Once you installed the ECU there are 4 things you need to keep in mind:
※ Keep in mind that around 80% throttle the ECU will run in open loop where the injector size need to be correct with your engine setup since it doesn't get a signal anymore from the O2 sensor and it won't be able to make corrections.
※ If you go big bore and you have no wideband O2 gauge installed, then a simple rule of thumb to select the correct injector is that, if your engine don't want to make RPM's, your injector size is too large, if your engine want to make RPM's, but have bad low and middle RPM power, then your throttle body size is too large...
Both situations are too avoid, and if the injector size isn't right or the throttle body isn't right, then the Yuminashi Powersports ECU can't generate a correct map for it....
With this LINK you can visit the injector section for your MSX125 SF/GROM125 SF.
● THIS VERSION OF THE POWERSPORTS ECU IS MENTIONED TO BE INSTALLED ON:
※This ECU is a replacement for OEM #38770-K26-B02
※This ECU can not be installed on the European version without a repin!!!!!
※If you want to install this ECU on the European MSX125 SF, then you need to remove pin 22 (Yellow/Green wire) from the EU wire harness, and repin the wire to pin position 33, which is empty on the European MSX125 SF version.
If you would not move pin 22 to pin 33, then the tachometer wouldn't work, all other wires on the EU MSX125 SF are equal to the US version.
SMART SHOPPER TIP:
※ BUYING MORE THEN 1 PIECE CUT THE TRANSPORT PRICE, AND YOU RECEIVE A 10% DISCOUNT ON TOP OF IT!
All prices are in THB