Iam looking for a jet kit that may be a little expensive and is worth the dollar ....Iam trying to build a fast blaster...Reply with your opinion of what my next upgrade should be

 

Do you have a pipe for it yet. How about porting.

 

You don't really need an expensive jet kit. Just go buy the main jet that you need. I found that jet kits don't have anything but a needle upgrade(not needed) and 5 jets you're never going to use. You can buy alot of main jets for what the jet kit cost you.

 

That is correct, and some of the time you can find a good shop that will allow you to trade jets so you only have to buy one.

 

<div class="FTQUOTE"><begin quote>Originally posted by: RickyBobby

Iam looking for a jet kit that may be a little expensive and is worth the dollar ....Iam trying to build a fast blaster...Reply with your opinion of what my next upgrade should be</end quote></div>

You can buy jets for about $2.00 each, you don't need a kit. Just putting in a bigger jet is not going to help much, especially if you are now jetted correctly or on the rich side. You could end up making your machine run worse. If you are lean then yes a larger jet will help by making your air/fuel mix more correct.
Putting in a larger jet and then trying to tune it is sort of backwards. You would need to increase the volume of air available (not just a K&N that increases the rate). I you give the engine more gas then you need to be able to give it more air too. And now that you have more gas and air how are you going to get it out of the engine, you will need a less restrictive exhaust also. You may be able to just build a collector instead of a full system. A collector is no more than an expanded section on your exhaust to handle more exhaust on a temporary basis until the rest of the system catches up... You probably will not be doing WOT 100% of the time so a collector will allow extra exhaust and when you are not going WOT will expel the exhaust as it can. Sometimes just putting in a section of pipe that is bigger than existing pipe will help without the expense of a full system. You need only to neck it up and neck it down... for example your exhaust may be 1 inch diameter, you neck it up to 1.5 inches and put a pipe say 12 inches long and then neck it back down to 1 inch and then into your existing muffler. This is only effective for short burst of speed, any sustained WOT and it will not offer much.
Again simply putting a jet in is not going to help. You jet based upon what your engine needs. You may find that in fact you may need a smaller jet as most ATV's come from the factory jetted on the rich side (less chance of a melt down and warranty claims), and putting in a bigger jet is making a not so perfect condition, worse.
When all is said and done then comes the issue of spark plug heat range, then the correct gap as gap will change your spark timing. A full breathing and flowing engine is going to require different spark timing than a stock engine. Your different air/fuel mix may require a different heat range on your plug also.
But anyway jets are about $2.00 each.

 

i have an fmf kit but inless you have the pipe its not really worth it