Anyone tried this product on a 400 scrambler. Looks like it would be handy for winter. My scrambler seemed to run a little lean last winter. Also i will be installing a dyno port pipe shortly and seems like a quick and easy way to rejet.

 

ive heard mixed reviews of it. it doesnt take much to change jets

 

yea i plan on rejetting for the pipe. I was just wondering if this product lived up to its claims of being able to adjust for temperature swings.

 

I'll be getting one for mine the next time I come across a spare $70.00. I took the ATV for a spin today (45 degrees) and it ran really nice but idled 100 rpm higher than normal. What that tells me is that the mixture leaned out due to the colder temp, the last time I rode was about a month ago when the temps were 60 and higher. To get to the point, if running at 45 degrees is lean, then it will be leaner at 25 degrees, etc. How much leaner is an important question and how lean is too lean. Unless you have an air-fuel ratio monitor of some type, it's just guess work. I'd hate to plow snow all winter long while running at an overly lean condition and cause some mixture related damage.

Since dial a jet suggests running two jet sizes leaner than stock, I figured I will run a DAJ in the winter only, since the colder temps essentially result in a leaner mixture. That's my plan anyway!