[CBRRAT]

I put 1,000+ track miles on my DRZ with the 3x3 mod, K&N air filter, and full Yosh system before I put my jet kit in. It ran fine for me. (I do not ride the street with my DRZ...so, the throttle is "wide open" 95% of the time)

To be honest with you, I was disappointed when I put my jet kit in. I could not tell much difference.

Street riding might be a little different.

 

[CBRRAT]

Did you notice a big difference from the 3x3 itself?

Not really....
I live in Florida and ride it on the track all the time (JenningsGP).....I didnt put the jet kit in until 1,000 miles later. I did notice that the exhaust crackles & pops more.