Ski-Doo EFI Technology
Dear Motorhead -
Correct me if I am wrong, but "Ski Doo" never made an EFI injection system on a 2-stroke. Old technology. No surprise there.
Thanks for your comment. It concerns me when I realize I've been around long enough to remember not just landmark sleds of the past but obscure ones as well.
To answer your inquiry Ski-Doo (with Rotax) did develop and produce a sophisticated (for its time) EFI system which was fitted on the Rotax Rotary Valve 580cc twin cylinder engine and stuffed into a PRS chassis variant called the "Formula Plus EFI" or more specifically the "Plus EFI".
The sled or more appropriately, the EFI system, was a one hit wonder living as a very limited production (I believe one per dealer - late release) powerplant. It disappeared faster than it arrived.
I may stand to be corrected here but I'm pretty sure the EFI system was developed in cooperation with Mikuni. This was a departure from the JECS systems both Polaris and Arctic Cat used at this time. Oh, what time are we talking about? I believe the "Plus EFI" was officially a 1992 model.
We had a Press Unit here at Supertrax and found it to be a nice improvement over carbs - except for one problem - the system was riddled with glitches which further undermined Ski-Doo's reliability reputation they were working intently at improving in the early 90's.
Everybody who rode the Plus EFI had at least one return trip on the rope. Ski-Doo never fiddled with EFI again until the arrival of the Semi-Direct Injection SDI 600 and 800 Rotax Series III engines in the early 00's.
There's more to the arrival of EFI on snowmobiles that's interesting. I think I'll write a column soon on how costly the patent infringement settlement was between Ron Chastain - owner of Injection Research Services (IRS) and Polaris. It is an interesting 30 year old tale.
More Like This
LATEST VIDEOS View All
First Ride On Taiga's New Orca PWC
August 4, 2020
COVID-19 kinda messed up our chance to evaluate Taiga's Electric snowmobiles this past spring, ...
2021 Ski-Doo Renegade X-RS 850 Walk Around Overview
April 6, 2020
We just had a brand new 2021 Renegade X-RS dropped off at our front door featuring the new ...
2020 SNOWTRAX Revolutionary Advanced Design Award Winner
April 3, 2020
AJ presents the 2020 SNOWTRAX Revolutionary Advanced Design award to the manufacturer that ...
Top Gear View All
September 9, 2020
Z1R Warrant Snow Electric Helmet
Z1R introduces the brand-new Warrant Electric Shield Snow helmet. No need for a face covering when you're sporting this new full-face ...
Ask Motorhead View All
November 15, 2020
600 EFI, 600 ETEC or 900 ACE?
Mark takes a look at which of these sleds is right for a reader...
Press Releases View All
November 23, 2020
OFSC Safeguards Trail Data to Protect Trails, Groomer Operators, Riders & Landowners
Interactive Trail Guide and Go Snowmobiling Ontario Apps Remain the Only Authorized Source For OFSC Trail Info
Tourism View All
November 1, 2020
5-STAR SLEDDING IN CHARLEVOIX
Rarely does a specific hotel earn universal recognition as a must-visit snowmobiling destination...