improving

I've read a post by Rensho suggesting the following: It seems the 570 is very timing retarded + leaned fuel + starved for air. I think if you shove a FX450 cam in there and tweak the TPS, and open up the seat to let it breathe, it would scream... I own a 2012 FE570S and a 2010 FX450. I'm...

So I have this old Berg (05 450) that I am thinking of fiddling with as its worth nothing to sell and still runs very well. I thought it was a great bike suspension wise until I rode my YZ 250 2st. Ok, so the YZ still pings about a bit in rocks compared to the Berg but everywhere else its much...

I have heard you can drill / slot / the flanges on the tank to improve air flow into air box, I heard it improves hp? but do you have to have a look at the FI Mapping? Dont really want to modify? bike unless its worthwhile........ Thanks

i checked my times for doing hawkedon a fortnight ago and they have vastly improved over this time last year. i did 5 laps in 29 minutes and the course was IDENTICAL to this time last year so comparisons are valid because then i did 4 in 28 and then 5 in 32 and 5 in 31. it means a lap of...