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I would keep you skis and carbides off your current sled and swap them for the tuners. if you trade in work it into the deal with the dealer.

the stock weights will look flat and triagulaly square the stock primary spring is black and has color paint marks on it to identify its character. and the stock helix is just plain cast alum not shinny.

Or you have no power to the injector lol

is something causing drag in the drive train? tell us more about what happened or what led you to this place in time. did it just happen over night has it been getting worse did you do any work?

You are correct the people on Yamaha's today are here because of the 4 stroke motor all 156 of us now if Yamaha wants to continue to build sleds at a profit they need to attract new people back to Yamaha. I have no desire to go back to a two stroke but I do desire for Yamaha to build one. I want...

dead spot in TPS?

X2

08 for sure unless it is beat to death.

at that price you should jump on it. You wont be disappointed.

I would check driveline I was doing horrible on fuel and found the buttons on my secondary were worn out. that is to much loss

the Ulmer header that deletes the EXUP most definitely increases you mpg. my buddy is still running a 2011 apex and would come in about 1/2 gal or less, more fuel used then he cracked the stock header and we had to get the Ulmer one now he comes in about .3 less gal used then my sidewinder. Not...

that's 16 MPG that sounds good to me. were you getting better before? I get about 15 MPG out of mine always have since new.

sparking in open air in easy sparking under 150 psi is hard I am thinking you have a coil that is weak if you move the coil and the plug to a different hole and that plug still looks the same then you will know. you could also grab a junk spark plug and straighten the electrode and see if it can...

I am 5'10" and can ride standing quite comfortable with stock riser.

There is your problem but why is it not firing is the question. that cylinder is not firing if it was it would look like the rest. try switching the plug and the coil to a different cylinder run it for a mile and see if it starts to change color if not change the coil out.

I have found the same thing with mine I took out the shim behind my secondary and started to get some squeal at idle too. may need to set deflection but when I got it all back together it is very close to the 57.5 mm we are supposed to have. I would leave it out and check offset. if it is close...

I wonder if one of the fuel pick ups is not attached to the bottom of the tank on mine(just a theory) on mine it always happens when I am below 1/4 tank of fuel and it always stops when I get fuel. it is like my low fuel early warning system. (just to early). I get a lean pop it reminds me of...