K&N issues

[Vee Dub Nut]

Ok, I bumped up my mains to 127.5, stock pilots, A/F screws 2.5 turns out... about .040" shims on the needles, and the two inch mod tonight..

I also dropped in a K&N filter.. now it runs pretty good at WOT, but there is a very noticable flat spot in the midrange.. Is this because of the K&N? (i ask because the reason i still have the K&N is because it did the same in my 600) should i go back to stock, or more shims on the needles.. once you get the throttle opened up and the rpms up, you feel a very noticable surge in power... (makes wheelies easy wow.gif on accident i promise) how about the A/F screws, should i open them up more?

What is the best way to tune around the flat spot, more shims on the needles, just drop the stock filter back in??

[jwalters]

Yes, needle position is what you are after to fix any mid-throttle issues.
Incase you havn't seen this before it's kinda nice to see it graphically.

Clip Position = Needle Height = Needle Position

[Vee Dub Nut]

ok thanks!... that really helped a lot..