Of the 10 F7 Firecats dyno tuned so far this month, four have been hotrods, with way more HP than the average stocker. Three with offset keys made 145+ with no fuel tuning (those had stock fuel flow in the mid-high 90 lb/hr range!). Just observing the...
I talked to Dan and Dale friday--after they saw my 05 F7 post, they grabbed one of their own 05's and put in on their dyno. Their 05 made way less HP the ours, 110+ lb/hr fuel flow. So probably Kaz' 05 was one of those lucky hot ones like we've seen in the past. Also...
10% lower fuel flow than normal, then tested with Speedwerx pipe and then PAC reduced fuel flow………
Today we dyno tuned our first 2005 F7 EFI. Kaz was bringing his his new sled to tune, figuring on relying on his D&D pac to drop fuel pressure to optimise HP. We had communicated by phone a few times and I suggested as I always do with EFI F7ers: install a 2 or 3...
bone stock, Speedwerx single pipe, reduced top end fuel pressure w/ D&D pac valve
SnowWeek/ SnowGoer has partnered with DynoTech, George Taylor, Big Moose Yamaha/ Arctic Cat, Old Forge Powersports Skidoo, and White Lake Polaris to make the Adirondack Shootout better than ever. Because of SnowWeek's participation, we expect a good turnout of "Trail...
to view these, you must click on www.superflow.com (link is on our homepage), download free Windyne software
Today I spent an hour on the phone with 7K Dyno Bill Davis (fully instrumented engine dyno @ 7000' altitude in Marysvale Utah). Bill and his partner Donavan are now preparing to create a sled chassis-holding fixture like mine that will allow testing...
I've got a good pal Don Schroeder in Alberta who wants to fly down to NY with his F8 cylinders/ pistons, F7 ECU, injectors to dyno tune here on Friday 11/19. But he needs a donor sled/ engine to fit his parts to for testing. The deal would be: free dyno time to...
THIS COMING WEEK...Monday doing a 99 XCR800, Stock vs DynoPort pipes, Vforce reeds, shim kit to raise cylinders, modified heads to compensate and then some... Wednesday we have a SkiDoo600 with a 734 big bore... Friday we'll be tuning another D&D F8 top end with a...
raw data form our dyno, you can mix and match and see all variables and correction factors during our test session
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...
Mike Zigmont’s most powerful stock F7 bumped up to 800cc Sorry non-Cat guys this is very significant. SkiDoo and Pol stuff coming next.
click on SuperFlow on our home page, download free Windyne software, compare these runs with othe SFD’s on site
The Blue Marble guys just shipped me a couple of cases of oil for me to test. I've followed BM oil streams around the internet, and you DTR subscribers know our batting average for dyno testing fancy oils/ oil additives/ treatments etc.....00zero. This time Sam...
use your free SuperFlow Windyne software to graphically observe. compare, etc
injector flow rates may have huge impact on tuning, Fuel pressure drop/ timing advance to add 10 HP once again.
800 two-stroke case reed twin, stock evaluation with fuel/ airflow tweeks for max HP
DTR05redlineSFDfiles.doc
use the freee SuperFlow Windyne software to graph/ compare/ analyze these dyno tests