Ok, so I've just landed back from Dynojet.
To be honest, I wasn't sure what to expect from today. I thought that a PCV unit, perhaps still under development, was going to be fitted and trialed on my bike. Not the case.
What happened is that instead I 5hrs in the company of a nice chap called Richard who set about discovering what made my 390 tick so that he could develop the very first 390 PCV.
So, many a wire was attached in turn to the bike to find out things such as what signals the Throttle Position Sensor and the ignition were doing and then essentially building up a picture of all electrical aspects of the bike so that Richard could set about making a PCV unit over the next week.
The bad news: many of the KTM plug in connections aren't standard off the shelf items, and require ordering, so I didn't ride out of Dynojet HQ with a PCV. Booo!!!
The good news: Richard is enthusiastically optimistic about what the little 390 can achieve once it has the PCV module he develops plugged in, very optimistic! Yayyyy!!! \o/
As standard, KTM state that the 390 produces 44bhp. Now, as far as I've seen 390 specification sheets, they haven't said if that's at the crank or at the wheel. If that figure is supposedly at the crank then Richard's educated guess is that through frictional losses, a 390 would lose about 4 of the horses, so 40bhp at the rear wheel, as standard.
My bike, with an Akrapovic (which according to dealerships and KTM UK's very own site, produces an extra 5bhp) on Dynojet HQ's Dyno, in rather humid (37%) and warm (23.95c) climes made 42.55bhp Max torque 25.7 at the wheel. So a supposed 49bhp at the crank loses 6.45bhp in frictional losses, so about right.
Initially Richard was cautiously optimistic, saying that he anticipated maybe a 10% improvement. But by the end of the session, he was very pleased and said that we may be looking at anything up to a 20% improvement, so could be looking at a hike from 42.55bhp (with Akra) up to 51bhp at the rear wheel. I'd be very happy with that!
Anyway, let's not get too excited just yet.
I'm now back home and now waiting for the phone call to return back to Dynojet (they may even collect my bike instead - either way I'm not fussed) so Richard can fit the very first PCV to my 390 and run it through the gears to get it set up on the Dyno.
Not sure exactly when that will be, could be about a week or so, as he's got to wait for the harness clips to turn up so he can make a PCV sub harness.
Oh, the other good bit of news is that Richard is adamant that the install of the PCV will be an absolute doddle. Only the seats will need taking off and a couple of clicks into the harness and you're done he reckons, so about 10mins all in for fitting (not that I'll be fitting mine
). Then it's just a case of (I'd imagine) downloading the relevant map and that's it.
Map of Dynojet power run and photo of bike on Dyno to follow.