[michiel]

6850 Um

[Mr helicop]

Have you discovered what the actual redline is for this engine - ie. when you hit the rev limiter?

No I never red line any engine, 6200 is about the highest I have seen.

[markm228]

Hi, Surprised as these are not my experiences. No secondary vibrations and not snatchy nor jerky. Interesting to see if others have experienced this. Personally, I would not like to lose the benefits that you identify by removing the upgrade, to the extent that I would purchase a new filter if concerned with re-oiling. Interesting to see if I experience any deterioration as the mileage  increases - done about 1300 miles so far.Rode about 100 miles through the Lake District National Park yesterday - just about perfect!

I might try putting the DNA filter and airbox cover in again, but not until I can get the Fuel X Pro from Hitchcock's or reflash the ECU. I think if either one of those things were done, then the bike would run better with the DNA filter.

[oldcolin]

Hi

Removed the DNA filter and cover today and returned it to standard.

Pros:
Better response on closing the throttle, it is much smoother, also change down smoother.

Cons:
More hesitant in lower gears and does not pull as well in 5th.  Needs more revs to pull.  It is only a slight difference but noticeable.  More mirror vibration when trying to pull at slower speeds, so definitely needs more revs.

Conclusion:
I will be changing back to DNA with either standard filter or DNA and DNA cover.

Colin 

[xpop]

I tried the DNA filter, the complete DNA kit, the Racing exhaust, the decat, the direct exhaust and I came back to the original model.
Everything is perfectly balanced from stock.

I think we have to gain weight, it's the only way to improve!