What is the best jet kit for the f4 and why?

 

I've only used 2, factory pro, and cobra. The FP was the better one. It was easier to install and tune.

 

I just ordered the factory pro, since U were the only one to say anything, and since I got it for $75 shipped brand new, not a complete steal, buy better than $100+

I removed the exhaust can to see how it would run with just a header, I didnt ride it, but It ran purfect, reved great, and no spitting on the way back down, Im wondering if my bike is already jetted?? Im going to install the factory pro ither way, but if it already has aftermarket jets

 

Hey man the only reason you want to rejet is if you are using aftermarket exhaust and high flow air filter. It's a balance between air and fuel. If you rejet and are running stock equipment then you'll probably end up running the bike rich. If you had ridden the bike with the can off you would have noticed how ****ty it runs without the backpressure there.

To answer your question though....Factory Pro is the way to go so good choice.

 

I just got a brand new never installed Giannelli Titanium slip on, used aftermarket f4 mid pipe, and factory pro jet kit should be here soon, already installed the k&n filter!

pipe, mid pipe and jet kit for $195 shipped!! brand new with the exception of the mid pipe which is free of dents or road rash.

redbones, I understand the purpose for jetting the bike, just didnt know if mine was already jetted, I bought it wrecked from someone who bought it wrecked from a tow yard and never fixed it. Therefor the history of the bike is unknown, and I thought it might have already been jetted because when running it with no slip on it ran good, I expected it to spit and pop especially on deceleration. But it ran good, It did start to idle a little faster after warming up a little due to the lack of back pressure. I did not run it for long, glad to hear another vote for the factory pro since I already payed for one!!!

I chose the one where you do not have to drill, not the race kit, I just dont feel like doing the extra work, and Im sure If I choose to do It later, someone can tell me how its done, and I will buy the drill bit "if that is all there is to it"

Will post some pics of everything in the winter mod thread, that is due for a updated name........ hmmmmmm..... Summer mod thread maybe?? lol