Last week I had an F6 travel 1300 miles (one way) from New
Brunswick to tune a Firecat, probably a new distance record. The owner
requested anonymity, so all you NE Canada guys can do is look for an
extra pair of hose clamps on the hose from the fuel pump to the
injector rail on a newly extra-quick F6.
Next week, we’re dynoing a 600 SkiDoo twin with a 732 Big Bore. Hoping
that this will be positive, information that we can share.
Also next week we’re doing a popular XCR800 tuneup–DynoPort triple
pipes, cylinder shim to increase port timing, various combustion
chambers, reeds, etc.
I’m surrounded by Polaris Fusions sitting in dealers’ warehouses–no
one is knocking at the door here yet but if no one shows up I will try
to borrow one from Cooper Sales/ Service next week. I had heard that
Polaris was going to allow their dealers tuning access to Fusion ECU’s,
but are now understandably rethinking that. The Fusions have deto
protection so there’s seemingly no need for Polaris to tune fatly, but
if they are we will try to figure a way to override the fatness and get
big HP like we do with the Firecats.
No 1000cc SkiDoo twins available just yet. I’m hoping that we
will have an independant sample prior to the SnowWeek/ DynoTech/
Adirondack Shootout in Woodgate on Dec 10. Also where AmSnow required
aftermarket trail mod particpants to be display advertisers in their
mag, Snowweek/ Snowgoer will not require that. Anyone who has REAL
trail mod packages to sell/ show off, you are welcome. Thi year it is
really trail mod, no pro stock dragracers, stock tracks, trail
carbides, (our) pump gas, engines teched (bere/ stroke/ compression
etc). Maybe an organized trail ride for the trail mods before
putting them on the track at half-time?
One contentious issue is aftermarket sale of fuel pressure dropping
devices for Firecats. Because of the WIDE variation in stock F7 fuel
flow these things must be dialed in on instrumented dynos to be safe.I
have dyno tuned many dozens of Firecats–stock fuel flow varies more
than 10%!! So if you take one of the [lucky like Ziggy] properly tuned
stockers and lean it out by blindly reducing fuel pressure it will
probably be toast, just like Ziggy would have been on the dyno if
observant dyno people hadn’t caught it.