Dyno set up

[Bryn]

 I'm very close to Hilltop motorycles in Earl Shilton,  ( UK) and Geoff there has had a steady stream of GS's and various other bikes through the door for one of his dyno/remap sessions....

www.hilltopmotorcycles.com is where to find him   

So on his advice I paid a visit today... and the first job was to whip the tank off to get to the secondary butterflies  . I was pleasantly surprised at how easy it was to actually remove the tank, rather than prop it up and have to work underneath it   

Anyway, you've no doubt seen what secondary butterflies look like... so I didn't take any photo's until they were off and the bike was up on the dyno. We didn't bother with an initial dyno run pre-butterfly removal, just the set up afterwards.

First thing Geoff did was plug in his box of tricks and download a completely different map into the ECU.... and then he was able to tweak the map to sort my GTR.





Haven't a clue what he was doing, and as it was quite ... noisy ... in there couldn't ask



Anyway, after a couple of hours of tweaking, and the revelation that the baffle in my Remus Okami was rather strangling the thing... so out it came....and the result of the tweaking is shown in the Dyno graph below 




The lower line is the Torque... and it is fairly constant at 90+ ftlb

the upper one is the BHP power curve, which is according to Geoff pretty good, and nice and linear....peaks at 148bhp (back wheel  )

He told me the fuelling is now spot on...

So off I went for a little ride...... first impressions  A LOT more responsive, excellent when overtaking, and just as smooth throughout the rev range.

I never wanted more power, but a consequence is an increase  ( I believe standard is around 150 bhp at the crank)

The extra get up and go though is another matter... much nicer for quick overtakes.. 

All set now for a glorious summer of Euro - Trips 

[Conrad]

 

Pic 2 looks like he was trying to get some of the ram air effect that the bike employs at speed.

[Bryn]

Pic 2 looks like he was trying to get some of the ram air effect that the bike employs at speed.

The fans were working well... look at his hair in picture 3   

[gPink]

If he cracked the ECU why did you remove the flys? He should have been able to program them to open sooner.

[Bryn]

If he cracked the ECU why did you remove the flys? He should have been able to program them to open sooner.

He said that the  ECU adjustment re-flash would still not allow them to open all the way  ( at least I think that's what he said)  ... and the strange thing is that when we went in there to take them out, they were  partially open with the engine switched off ... you could manually close them, but then when the bike was started up again and switched off they returned to the part- opened state.

Geoff's explanation was that someone had 'had a go at them' previously  .... anyway... as we took them out before the dyno run it was done and dusted before the re-flash

[davidnixon]

He said that the  ECU adjustment re-flash would still not allow them to open all the way  ( at least I think that's what he said)  ... and the strange thing is that when we went in there to take them out, they were  partially open with the engine switched off ... you could manually close them, but then when the bike was started up again and switched off they returned to the part- opened state.

Geoff's explanation was that someone had 'had a go at them' previously  .... anyway... as we took them out before the dyno run it was done and dusted before the re-flash

The flies on my 2009 were partially open as well when I went to remove them - this may be normal?

[Bryn]

The flies on my 2009 were partially open as well when I went to remove them - this may be normal?

Possible ... Interesting too 

[curly]

I noticed he left the fairings on. Every dyno run I've seen they are always off. I priced a dyno run locally at @$300 bucks and they guy said most of that price was fairing removal.

What's the consensus fairings on or off?

[Bryn]

I noticed he left the fairings on. Every dyno run I've seen they are always off. I priced a dyno run locally at @$300 bucks and they guy said most of that price was fairing removal.

What's the consensus fairings on or off?

In the first picture you can see a wire with a black box... going towards the under seat area... that's what plugs into the bike...and that's where the new map is transferred. I can't see any reason to remove the panels  .... unless it's to extract more cash from you 

[marku8a]

The flies on my 2009 were partially open as well when I went to remove them - this may be normal?

My flies (2009) were completely closed when I removed them.

Mark

[Bryn]

My flies (2009) were completely closed when I removed them.

Mark

That's the end of that theory then   

[curly]

In the first picture you can see a wire with a black box... going towards the under seat area... that's what plugs into the bike...and that's where the new map is transferred. I can't see any reason to remove the panels  .... unless it's to extract more cash from you 

I was told it was for the fans to cool the engine.

[Bryn]

I was told it was for the fans to cool the engine.

I stood next to the dyno while Geoff did his stuff.... the temperature gauge didn't alter from normal, so the two blowers were obviously doing their job without removing the panels