Cycle News

Cycle News Issue 22 June 6, 2017

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

Issue link: https://magazine.cyclenews.com/i/833352

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VOL. 54 ISSUE 22 JUNE 6, 2017 P127 injected, there will be full tuning of the ECU, just like a modern four-stroke, making it the power adjustable to your liking. I tried to find ways to confuse the fuel-injection system and cause it to run erratic throughout the day, it just never happened. While playing around on the dirt roads I'd shift up to sixth gear while cruising about 10 mph and then crank the throttle wide open. Like a fuel-injected four-stroke, the 250 and 300 would begin smoothly accelerating without a hiccup or cough. The system just plain works awesome. I also found myself riding a gear higher than I could on a carbureted bike through technical terrain thanks to the consistent delivery of power without any surges. You have to look carefully and through the right sunlight to see any smoke out of the tailpipe when the TPI is running, and at the end of the day the muffler core didn't have a trace of un-burnt premix on the 250 and 300 at Erzberg, which really let us feel the differ- ences. We made all the climbs on both bikes, but, in the end, found it just a little easier on the very torquey 300, thanks to it's incredible off-idle torque. If you are a true 300 rider, the addition of fuel injection to the 250 won't change your mind, you'll have to wait for the 300 to be truly happy. When the technology develops further and more bikes in the KTM two-stroke line become fuel oil. This can be a little unnerving, but because only air and oil are traveling into the crank case and fuel is introduced in the transfer ports, the premix oil (not pre- mixed anymore) isn't diluted with fuel, making the oil more effec- LIKE A FUEL INJECTED FOUR-STROKE, THE 250 AND 300 WOULD BEGIN SMOOTHLY ACCELERATING WITHOUT A HICCUP OR COUGH. THE SYSTEM JUST PLAIN WORKS AWESOME. With TPI, you have confidence that power will be there exactly when you need it always.

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