I have a 2025 KTM150sx and I'm looking for a little more power. I was thinking of adding a VHM head along with a shorty exhaust. Does anyone have experience with the VHM heads on the fuel injected 2-strokes? Any idea on whether the fuel injection system will adequately compensate for these mods?
Any other mods to consider on this bike? The suspension has already been sprung and valved.
I got this for my 2025 150SX.
https://sbmotoperformance.com/product/tsp-erm-power-kit-tbi-ktm-150-sx-…
Thanks for the link. How many hours do you have on the head and new maps? Did you notice a significant difference?
I installed it and raced the next day. Immediately noticed power gains. The ERM is an awesome tool. I leaned out the green map with a touch of a button and reflashed ecu all in about 2 minutes. I had them download/install the new maps on the ERM for $30 extra. There are instructional videos to help with everything. My starts were much better with this setup especially racing against 450's. Only have about 1 hour on it but impressed. South Bay Moto support is great as well. I called with a question and Steve, the owner, was super helpful.
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