dj423
New member
Been doing my 'homework' on doing a big bore on my 22 CT125, got a LOT of good info searching various threads here. Where I get confused is with the 5pin vs 3pin MAP/IACV/TPS lingo. From the service manual I see the CT has a 5 pin connector for MAP and TPS, but only three wires. I am assuming the TB's are different from the Grom ones I see all over the web. At least that is the vibe I got doing a lot of reading.
I was looking at this Yuminashi 30mm here: https://www.yuminashi.eu/30mm-throttle-body-upgrade-set-z125-pro-pcx125-150-adv150-etc/
Is anyone running this TB on their CT125? I know m in sc mentioned the clipping point 26mm TB on webike, so that is a possibility and would probably meet my needs.
A little backstory, the kit I have is for a Grom, it's the Koso 170cc kit with the 4v head and intake manifold, with a Koso oil pump and chain tensioner. So I /think/ it will work, but still doing research on how to deal with the TB and intake since they are different from the Grom stuff. For engine management I plan on running an EFIE at the very least, and possibly the aRacer mini-x ECU once I confirm which ECU my bike has. Cassie at Cameron Jones mentioned they hope to soon have tunes for the CT125, but they are not there yet, so working with the options that are available at the moment.
The only wildcards are the TB, the injector size and how to connect to the stock intake. Just curious what yall run for larger throttle bodies. I read 'thepen' mentioned he is running the Yuminashi 30mm unit, not sure what he had to modify to make it work. Also found the Takegawa 28mm for the CT, but have yet to find one in stock anywhere. I have the ADV150 injector, but the Koso kit calls for a 160cc injector so I have one of those coming now.
I was looking at this Yuminashi 30mm here: https://www.yuminashi.eu/30mm-throttle-body-upgrade-set-z125-pro-pcx125-150-adv150-etc/
Is anyone running this TB on their CT125? I know m in sc mentioned the clipping point 26mm TB on webike, so that is a possibility and would probably meet my needs.
A little backstory, the kit I have is for a Grom, it's the Koso 170cc kit with the 4v head and intake manifold, with a Koso oil pump and chain tensioner. So I /think/ it will work, but still doing research on how to deal with the TB and intake since they are different from the Grom stuff. For engine management I plan on running an EFIE at the very least, and possibly the aRacer mini-x ECU once I confirm which ECU my bike has. Cassie at Cameron Jones mentioned they hope to soon have tunes for the CT125, but they are not there yet, so working with the options that are available at the moment.
The only wildcards are the TB, the injector size and how to connect to the stock intake. Just curious what yall run for larger throttle bodies. I read 'thepen' mentioned he is running the Yuminashi 30mm unit, not sure what he had to modify to make it work. Also found the Takegawa 28mm for the CT, but have yet to find one in stock anywhere. I have the ADV150 injector, but the Koso kit calls for a 160cc injector so I have one of those coming now.