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You’re probably being hosed at the pump

Polaris and Bombardier are using detonation sensing technology on some of their engines to help alert us while  riding or dyno testing,  and to  try to protect sled owners who experience detonation on their engines.  They utilize  engine noise...

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more ETEC testing etc

2/20...After comparing the SkiDoo 600 dyno test data between  Etec and SDI, we are hunting for the missing 5 HP. While part throttle cruising A/F and BSFC are admirably low, BSFC at peak torque and HP RPM is disappointingly normal. The Etec and SDI single pipes...

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