LiveForMud
Posts: 704
Joined: 1/7/2007
Status: offline
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gonna have to face it... EPA is mandating most forms of powersports start using EFI within the next year or two or they won't be able to sell them in this country. 2-strokes are already under the knife. as good as the 650H1 was, the 700 is where the market is going. it's more evolution than revolution though... just the progression of cat's business plans. it's a newer and more versatile design and also has the improved bevel gears... basically eliminating about all of cat's weak points. if you need the gearing the 650 came with stock then stick in a set of 3.6s or 4.0s (or just buy a mud pro and be done with it). it won't be much longer before EFI tuning will get easy and dirt cheap. if atv fuel injection systems get as good as those in cars and trucks, then you can snorkle it and install a pipe without doing anything to the fuel system... if it has the same sensors (intake air temp, manifold pressure, mass air flow, and oxygen sensor) then it'll be able to perfectly adjust the air fuel ratio for the mods automatically. it'll get the fuel metering much closer to perfect than you ever could tinkering with a carb. a carb feeds by specific fuel circuits, where EFI adjusts injector timing to the millisecond for ANY rpm and throttle load you can possible encounter. but for now we'll have to get programmers and tinker with it or pay someone else to make the tunes. but at least you can just plug the module into a computer and change settings as needed rather than tearing into the carb for every little change. and EFI will make it so much easier to turbo or supercharge these little engines. i'd love to be able to install a positive displacement blower (like on a 03 or 04 mustang cobra, eaton or whipple) on my 500. instant full boost right off idle (NO lag), and holds full boost to redline... basically making a 500 act like, feel like, and have as much power as a 1500cc engine. EFI will make this a piece of cake. hang on for the ride yall... i see a lot of exciting things happening in our sport in the next few years.
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2005 RED AC 500M Remote mounted g.o.r.i.l.l.a. 3k lb winch PC680 battery iEquus 8068 3 3/8" tach Reloc'd radiator 26-in XTRs some other stuff !seals, !brakes, !traction, !BEVEL GEARS, !money, !sanity... Dad's ride- 06 Foreman S 4WD Bro's ride- 07 King Quad 450
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