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Running high quality grade 9 hex bolts, they hold just as good as the stock ones, are far easier to remove, and lower profile. No problems at all with them getting loose. Always use nickel anti-seize.

The Patent in Claim 1 talks about a fiber-reinforced plastic matrix. The focus seems to be (at first glance) the pyramid structure, basically, this is Polaris saying that they can build a pyramid structure out of fiber reinforced plastic. 1. A superstructure of a straddle-type vehicle...

Drive Shaft Saver Top Gear Bushing or Top Gear replacement Might as well change the plastic reverse gear actuators out for brass ones while you are in there. Check all hoses (clamp tightness) Muffler bolts - at minimum, take them out while they are new and use a nickel based anti-sieze, better...

I don't have a livescope but I have a bag I made up from a camera bag, it carries the batteries (Lithium) in the bottom with the transducer and the upper part of the bag is how I carry my simrad display. The outside of the bag has velcro straps for a small monopod which is where I carry the PVC...

Is it a burbling noise

you would be if you were a tesla.

Its there, you can even see it in the wiring diagram. Connector 16 is the EPS power (EPS fuse), and Connector 51 is EPS signal (basically tapped into canbus + taillight power)

Its hanging out with that part of your brain that was displaced by GPS.

If someone wants to post a log file as a CSV I can have a look.

Not my point. You can calculate duty cycle from the data in the logs. The actual formula is based on injector capacity, air mass (boost), AFR, RPM, displacement, the fact that the engine is a four stroke, has a turbo, pressure is xxpsi, and fuel pressure. The missing component is likely fuel...

Understanding that what the DSMlink was reporting to you was derived (calculated, not actual) you likely have the information you need from your existing logging to calculate duty cycle.

You cannot have an injector open for longer than 100% as 100% means it is always open (at least during the timing window). Depending on the setup for that particular engine (open or closed loop, type and points of reference for pressure), the ECU is calculating an effective duty cycle and...

BSFC as I said is a measurement, yes you can use averages from different engine types as a rule of thumb if you were trying to pick injector sizing, but unless you are the guy building the fuel maps, you aren't going to change away from what is already there in a 'purchased' tune. If you just...

BSFC is a dyno measurement (=g/j), not an input or influence on anything in the motor in the same way that horsepower (Torque x RPM / 5,252) is a byproduct of torque and RPM. BSFC is just a way of expressing an efficiency ratio. It is a useful tool when designing a commercial engine (e.g. for a...

It occurs to me, thinking about your original post that fuel pressure needs to be raised as you increase boost pressure (and therefore dynamic cylinder/manifold pressure) because the injector gets less efficient at fuel delivery, this in turn creates demand for greater relative fuel pressure to...

Do the injectors get changed out with PEFI stage 4?

Profit margins.

The closed loop tune will try to adjust AFR based on what it is being told by the O2 sensor. This means maxing out the operating window of the injectors (max duty cycle). If there is not enough fuel pressure available or the injectors are too small, the system will run lean while the closed...

You honestly believe that AC partnered with Yamaha so that they could take them out of the relationship ? How does that even make sense. AC was struggling, Yamaha wanted out of the business. A tiny company like AC who was already struggling, needed a lifeline. Yamaha who has a brand presence...

Without the relationship we likely would have never seen another model beyond the deltabox. Yamaha simply isn't interested in chasing small markets.