I am looking forward to finding out more about the FI on the 08's.
Yamaha's only sensors for their other FI bikes are manifold pressure sensors. I worried about the complications of oxygen sensors in the exhaust, so was relieved to find out that they have not used them so far.
This change had to be for EPA air pollution standards. The fuel mix coming from carbs is always best at fairly specific
RPMs, leaving the remainder of the
RPM range either lean or rich. It works fine for us but it has consequences in emissions that may no longer be acceptable.
I don't know if it will help with the
svs, or the front cylinder lean problem with drag pipes, especially without the oxygen sensors. But it would make the mix values more predictable so it has to help a little. This assumes that Yamaha wants to tune the FI to help resolve these issues.
Its welcome as far as I am concerned. I like carbs, and really enjoy fine tuning one, but FI is stepping up a notch in fine tuning. So looking forward to what comes from this. Plus I'm a computer guy and am anxious to find out if that will open some options, like perhaps being able to tune the mix curve at tuning time dynamically. That would be incredible. Not holding my breath on that one

.
I just hope they didn't do it in a way that will spoil the way the engine looks by attaching an ugly apparatus to it.
Gram