i had my bike set up a few months ago, but it has deleloped a hole at about 5000 rpm not noticible when tooting about but on the track its a pain in the arse coming out of the hair pin, its due back on the dyno before my next track day, the only thing I can think of is I replaced exhaust seals before the run and after it popped on the overrun this has now gone, surely that wouldnt be enough to cause that, it also does,nt drop revs to quick when the bike is hot, any ideas

Where to start...........

I know what ya mean, took of the pcv it still done it, checked the headers no signs of cracking, checked the inlet rubbers all looks good changed the fuel pump and filter for my spare, wd40 the bgc and used the grease on them, could it be the tps?

That's what some say - apart from replacing the whole throttle body assembly.........I've not had a any problem with my TPS - check it out on TuneECU - 0.60v fully closed and 3.77v ish fully open works for me.

As you know, I have had and continue to have flat spots and the like everywhere - cf my 'Intelligent ECU' thread etc - irrespective of TPS settings, map, etc and my current theory is partially gummed injector(s), particularly given my mileage, (but that would not explain the immediate improvement after loading new/same map followed by slow deterioration) so reluctant to suggest an instant solution.

Seems to me that 08 SDRs are increasing prone to problems based on threads here or is that just because there seems to be more of them on here of late.

Happy to chat through various options/non-options by phone as before but not sure about your airbox, exhausts, map, etc - presumably the good news is that it's all back together and your earlier problems are sorted (?).

I know that you too have had more than your fair share of problems but as those of us weened on British and European bikes know, you get far more back than you put in with these than Japanese prod and play bikes - Zen and the Art of Motorcycle Maintenance etc (but that was a Honda..........)

yes reg/ rec sorted now, thankyou very much for your help l a set of sdr throttle boddies I may try, I wonder could I of locked in some moisture in the bgc when I put the dialectric grease in I will try and wd40 out the bgc then hair dry them and re-try

Compressed air better than hot air.

changed the fuel filter and pump with a spare I had no difference

gonna change the graphite seal at the rear tomorrow done it in jan, it does feel lean so will try this

Graphite seal has nothing to do with a/f surely?

..Have you checked the throttles ...are they out of balance ? ............sounds like classic symptoms to me

Take it to BSD Performance in Peterborough, they will sort it