Trail Rider Magazine

November 2024 23 Se ng the TPS and power valve Se ng the TPS and power valve Registering the ERM and downloading the map Registering the ERM and downloading the map just so well dialed in performance-wise compared to the new TBI (Thro le Body Injec on) model. Ba- sically, the '24 TBI 300 felt a bit numb and blubbery down low compared to my clean running, tuned and modified '19 model. Again, and now three years later, while discussing my op ons with Alec at Slavens, he suggested the Two Stroke Performance ERM (ECU Reflash Module), Oversize Powervalve Cover, and Medium Compression Cylinder Head. "Let's do it," I said, and a few days later, I dove down another rabbit hole of learning somewhat unfa- miliar technology as the TSP ERM is quite different from the GET ECU. Once the ERM is registered and the map of your preference is downloaded, the ERM is connected to the bike via the diagnos c terminal (located behind the headlight on TBI models). At this point, the ERM is powered up and the next step is to connect the ERM to Wi-Fi. At this point, while connected to Wi-Fi, the stock map is copied from the ECU and saved to the ERM and the TSP map chosen is flashed to the ECU. At this stage, the thro le posi on switch (TPS) voltage is checked with the red and yellow idle speed adjusters backed out. In order for the fueling to be accurate across the en re rpm range, the TPS voltage must be set to 4.0 volts. Luckily, ours was spot on, and the TPS did not need to be adjusted. We then reset the high idle voltage per instruc ons by turning in the yellow knob. What's a TSP ERM, you ask? Well, I'll do my best to explain in the simplest of terms. Whereas the GET ECU replaces the stock OEM ECU, the TSP ERM is a module that allows you to download maps from TSP in Australia and then upload them to your stock OEM ECU. How it works is this: first, you connect the module to your PC or laptop, log onto twostrokeperformance.com and download their ERM Manager program. From there, you create an account with a username and password. The next step is to register the ERM and enter your bike info, such as make, year, and model. TSP has a number of custom maps available to download to the ERM. You can choose a map that fits your eleva on, riding style, etc. You are allowed one free map (actually two maps, as you will receive green and white maps to access with your mapping switch). Addi onal maps can be purchased by entering your credit card info. Once voltages are checked and set to specifica ons, the power valve is checked and set electronically. Yes, it might sound complicated, and I'll be honest; ini ally, I was a bit overwhelmed, but a er watching the TSP YouTube videos describing each and every step, I found it to be a rela vely simple and interest- ing process. Yes, learning can be fun! With the new TSP map flashed to the ECU, we suited up and hit the trail. The difference in performance was drama c. The bike now runs crisp and clean from idle on up with no ceably more low-end grunt. As for the two different maps, I've never been one to no ce much of a difference with map switch posi ons on 2 strokes. With the TSP map installed, the difference between the white (so ) and green (aggressive) map is immediately apparent, with a dras c difference between the two when twisted.

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