Recent content by RKS

Starting problem fixed, manual said 91 ron or higher I have been using 98 tried a tank of 91 and you only have to breath on the starter now and it fires seems to run better too cold and hot , after a bit of research these motors are tuned for lower octane fuel , the 98 is harder to ignite ...

Oil and filters cleaned and lubed all pivots changed brake fluid. Give penrite 10-40 synthetic a go, went for a blast nice shifting.

Cold start it idles at 1500 rpm after a minute or so drops to 1250 idles a bit rough though sorry for the late reply battery checked ok.

Battery seems ok it has been like this from new , it's as if there isn't enough fuel or spark on the first go after 3 or 4 cranks it fires then stalls then on 2nd try it starts on first crank maybe the battery could be faulty from new I will get it tested see if that's the culprit .

My 2010 will never start on first go when cold always starts on 2nd try, ok when hot, its been like that since new and now has 10k on it, done the TB sync . Is this normal for the gen 11? thanks.

#1 ride/drive with light load on engine till warm up much better than to leave idling.

Thanks for all that information I have watched that on you tube before notice how the valve starts moving at around 4k and tends to vary somewhat I still think its main use it help with dip in power/torque at certain revs and load just my opinion right or wrong. Most of the 25 bikes I've had...

Gen 2 exup for "noise" or power gain . I'm trying to answer this question . The exup on the gen2 is for power ,when the valve moves even slightly it changes the way the pipe sounds , there are few here that understand how the valve works , there are no huge gains from the gen2 exup just...

Sharing my personal experience with the exup valve is climbing out on a limb should I wait till post 257 to do that?

We are talking about Yamaha here they use the exup for intake and exhaust pressure , back pressure,exhaust tuning call it what you like all in the name of more torque at certain revs my 2010 gen 2 is bone stock and has nice torque from 2k rpm and up in part due to the exup .I know more can be...

For those who think exup valves are for noise only WRONG. I had a 1900 roadliner it had the exup in the header pipe you could run it without the stock pipe or the aftermarket slip on still had the same power and torque, its all about exhaust back pressure.