Daniel Jost
Squirtin six
- Joined
- Oct 11, 2003
Well after getting fed up with my snowmobile's carbs always being out of sync and hard starting along with bad fuel economy from the pipes and high clutching, I decided to take another approach when I found myself bored this winter... I got back from a snowmobiling trip and was upset after getting pulled on the top end by a friend's new Switchback and all the starting issues I have had. I pulled all the carb and ignition stuff out and decided to go to a radical route, a EFI Turbo 2-stroke Triple.
To keep the story short I installed a 36-1 trigger wheel on the crank with an LS1 crank sensor, Honda 70 amp alternator (Lots of custom fab), 190LPH external pump, Polaris throttle bodies, injectors, and fuel rail/reg. Custom fabricated log intake, Garret GT1752 Turbo, Custom fabbed exhaust, Ford MAF, Home built filter/reg/cooler system flowed by a Tilton oil pump, Gel Cell Battery, and LS1 coils. Of course all of this was controlled Via a harness I custom made and the MS3x that I borrowed from the GN with Bluetooth wireless logging/tuning.
The sled utilizes Sequential LS1 CNP, Sequential Fuel Injection, and a fully adjustable timing map (Unlike Stock CDI) It also has tw0-step launch control and I will be adding a very crude alky injection system to up the boost from 6# to something of more fun Fast forward 5 months from when the project started, there is no snow, it's 85*, I have the project pretty well completed and have a base tune I came up with loaded in the ECM and want to test it out. I made a couple very short throttle burst (Can stay on it too long because its so hot out) on a base tune with low timing and heavy fueling and it still pulled great. Kind of funny because it reminds me of the Buick, stab the throttle then hang on and wait for the boost! The best part is the whole setup cost me just under $300 since my friends gave me parts they weren't using, they were sitting around, or in the case of the ECM it's borrowed from the GN.
,Dan
To keep the story short I installed a 36-1 trigger wheel on the crank with an LS1 crank sensor, Honda 70 amp alternator (Lots of custom fab), 190LPH external pump, Polaris throttle bodies, injectors, and fuel rail/reg. Custom fabricated log intake, Garret GT1752 Turbo, Custom fabbed exhaust, Ford MAF, Home built filter/reg/cooler system flowed by a Tilton oil pump, Gel Cell Battery, and LS1 coils. Of course all of this was controlled Via a harness I custom made and the MS3x that I borrowed from the GN with Bluetooth wireless logging/tuning.
The sled utilizes Sequential LS1 CNP, Sequential Fuel Injection, and a fully adjustable timing map (Unlike Stock CDI) It also has tw0-step launch control and I will be adding a very crude alky injection system to up the boost from 6# to something of more fun Fast forward 5 months from when the project started, there is no snow, it's 85*, I have the project pretty well completed and have a base tune I came up with loaded in the ECM and want to test it out. I made a couple very short throttle burst (Can stay on it too long because its so hot out) on a base tune with low timing and heavy fueling and it still pulled great. Kind of funny because it reminds me of the Buick, stab the throttle then hang on and wait for the boost! The best part is the whole setup cost me just under $300 since my friends gave me parts they weren't using, they were sitting around, or in the case of the ECM it's borrowed from the GN.
,Dan