Yamaha Genesis 130 FI

Here is a power and torque graphic for the Genesis 130 FI (fuel-injected three cylinder 1050cc four-stroke) found in the all-new 2008 Yamaha Nytro FX models.
The addition of fuel injection and the increase in displacement yielded a 16-horsepower gain over the Genesis 120 engine it is based on. “We built this engine with an eye squarely on the ISR Stock 600 Class rules”, said Yamaha Snowmobile Product Manager, Adam Sylvester. “We wanted the new engine to be fast-revving and powerful for both competition and for consumers. We got everything we had hoped.”
Yamaha brought a preproduction Genesis 130FI engine and a full-production Genesis 120 engine to (our old friend Olav Aaen) at Aaen Performance’s dyno testing facility for same-day, back-to-back testing in order to determine the extent of the performance difference.
Peak horsepower figures were 138.6 HP on the FX Nytro and 122.6 HP RS Vector. Both engines showed a very similar curve profile, holding their respective peaks for several hundred rpm.
Torque showed a similar gain, from the carbed 120 to the fuel-injected 130. The Vector engine showed a peak torque figure of 82.9 foot/pounds. The FX Nytro
engine pulled 94 foot/pounds at 7100 rpm. “That kind of torque is near what consumers have found in competitive big-bore 2-stroke engines in the past,” said Yamaha Snowmobile Marketing Manager, Rob Powers.
The Genesis 130FI engine also showed a huge gain in torque down in the low end. At 3500 rpm, the new engine posted nearly 72 foot/pounds of torque. That is a 17-point improvement over the Genesis 120 engine. “Consumers are going to absolutely love the high torque this engine puts out at clutch engagement,” added Sylvester. “The reason is this engine’s amazing low-end grunt.”
The torque curve is what you feel when you squeeze the throttle. The new fuel-injected triple comes alive quickly and with authority, delivering a wide torque delivery all the way from a grunting 5000 RPM, rising quickly and peaking at about 95 pound-feet of torque at around 6,000 RPM, remaining strong through the entire operating range.