Snorkel, filter and more fuel

Outtomunch said:
As somebody here said they had done a dyno run and couldn't improve on the reccomended settings I probably won't bother. IIRC they measured 100bhp at the wheel on their run and my 'seat of the pants' would agree with that :)

I suspect that the snorkel mod only comes into play at speed/high revs but, if I get the chance to swop back I'll certainly reprt my findings :thumb2

Andres
Click to expand...

I fitted an Akro complete race system (twin cans) with k+n airfilter and made 98.5 bhp at the rear wheel.would like to see what it would make with the Power controller fitted:D
 
KB said:
I fitted an Akro complete race system (twin cans) with k+n airfilter and made 98.5 bhp at the rear wheel.would like to see what it would make with the Power controller fitted:D
Click to expand...

Should know tomorrow kevin will keep you posted.

steve
 
105.1 hp

Kevin it made 105.2 hp on the dyno and thats corrected, and a whooping 85 foot pounds of torque.
The bigger air snorkel has made the difference i reckon, i also have another identical snorkle i bought two from boxer.de one for my friend and myself and he know informs me hes selling his GS and he hasnt even fitted it yet, so i have one up for sale if anyone needs one ok.
Will post the chart when i get a mo to get it scanned, the bike pulls like a locomotive now, smoother loads of grunt and will pull top gear much lower down the rev range. Now to be fair i made sure the power controller was well set up previously, it took a bit of time fiddleing but know its well sorted.
tho co reading/burn reading is 13.2 nearly all of the graph which is near enough perfect, its runs high 13s up to about 3000rpm which is normal on the GS
steve
 
Steve,

What settings did you end up with on the Power Controller? Did you end up with the recommended settings? or did the final ones differ?

Cheers,

Dave.
 
dlevett said:
Steve,

What settings did you end up with on the Power Controller? Did you end up with the recommended settings? or did the final ones differ?

Cheers,

Dave.
Click to expand...

No Dave they were a tad different, i modifed them to suit the burn ratio that was best for all through the rev range, there was a dip in the curve just between 5000 and 5500 rpms so i altered the specific mode to correct it.
works well now, huge difference in the bike.

steve
 
Cheers Steve, I'm looking for the best (initial) settings for mine (and then if I need a Dyno Run I will).

Mine is/will be 1200 GS with Remus headers (no cat), Remus Genesis (straight through) exhaust/can, K&N filter and (maybe) the snorkle mod (though I'will start with the standard snorkel). The major difference is that we're approx. 1,800m above seal level (where the bike will almose exclusively run) and it is generally much warmer and less humid than in the UK (and rumour has it that the bath water goes down the plug hole the opposite way!).

I expect that, as standard it will be 10 to 20% down on power due to the altitude so, with the improved breathing and fueling, we may get back to standard (or a little bit more).
 
big simp said:
No Dave they were a tad different, i modifed them to suit the burn ratio that was best for all through the rev range, there was a dip in the curve just between 5000 and 5500 rpms so i altered the specific mode to correct it.
works well now, huge difference in the bike.

steve
Click to expand...

That's a VERY nice looking chart, nice and smoooooooooth :thumb2 May I ask how the numbers at the bottom correlate to rpm?

Also, what were the actual settings you ended up with as it would be interesting to try them.

Cheers
Andres
 
Outtomunch said:
That's a VERY nice looking chart, nice and smoooooooooth :thumb2 May I ask how the numbers at the bottom correlate to rpm?

Also, what were the actual settings you ended up with as it would be interesting to try them.

Cheers
Andres
Click to expand...
Andres
On that particular run the bike showed 133 mph, and the final run it showed 137 which was nearly into the limiter in top gear but not quite, it definatly wasnt hanging about, the mixture at that speed was 13.2 which is about as near perfect as you can get on a GS. I have the settings on several different charts and will make a note of the changes in the six different modes shortly ok. Yes its a smooth curve and you can understand now how well the bike rides and performs over standard, probably some people wont understand why someone would change a GS to this level,,,,,,,,,,,, but then they havent ridden a "well sorted GS "which is my mind is the perfect roadbike come do all tackle anything tool. It will tour , scratch, commute, go to shops for milk even. Suspension next its nearly but not quite sorted,,,,,,,,,

Steve
 
That makes interesting reading Steve, just sent you an email.
Kevin
 
big simp said:
Andres
I have the settings on several different charts and will make a note of the changes in the six different modes shortly ok.
Steve
Click to expand...

Steve,

Did you manage to note down the settings - I'm going to install mine today (though won't be able to ride it for a few days - Doctor's banned me while I've got Pneumonia - still, not all bad, it gives me a couple of days off to catch up on things!).

I'm not sure whether mine will need the same settings here with the altitude (1,800m above sea level) but I'd like to use your settings and see what difference it makes over the standard settings.
 
I've now had chance to run mine a couple of times with the Power Controller on the recommended 'base settings' (Remus Headers and Remus Genesis (open) can - but at 1,800m altitude or so) and it seems to make quite a difference.

There is now a definite 'surge' in power around 5,000 rpm (where as on the standard bike there is a 'dip') and it seems stronger from there to the red-line. I'm not sure whether I'm imagining it, but it does seem a little more 'jerky' at low speed with small throttle openings (possibly better throttle response that I'm not used to).

The next addition is the K&N filter to see if that makes a difference.

Subjectively, the Power Controller does make a significant improvement (as I said above, I'm 'at altitude' here, so it likely runs richer than at sea level anyway).

I'm going to try 'raising' the settings a little as others have found beneficial, and see what that does - with the altitude here, it may make it too rich though.
 
Now I've changed the air filter to the K&N, I can say that (with my ear plugs in) I can't tell any difference over the standard filter with the Power Controller on the default settings.

With the mods now complete, I think it's off to the dyno to fine tune the setup.

Remus Headers
Remus 'open' Genesis Can
Wunderlich Power Controller
K&N Filter

(running at 'altitude', so probably delivering the same maximum performance as a standard bike at sea level (but without the 'dip' in the curves around 5k)
 
dlevett said:
Now I've changed the air filter to the K&N, I can say that (with my ear plugs in) I can't tell any difference over the standard filter with the Power Controller on the default settings.

With the mods now complete, I think it's off to the dyno to fine tune the setup.

Remus Headers
Remus 'open' Genesis Can
Wunderlich Power Controller
K&N Filter

(running at 'altitude', so probably delivering the same maximum performance as a standard bike at sea level (but without the 'dip' in the curves around 5k)
Click to expand...

Interesting that you didn't notice much difference with the filter.........you obviously need to cut down the snorkel! (only joking, TBH I'm sure it doesn't actually make much real word differemce).

When you say you are running 'default settings' do you mean base settings or the ones reccomended for Remus, Blue filter etc?

Andres
 
Andres,

The Power Controller is set to the ones they recommend for the Remus, Blue Filter, 98 octane, etc. Others have found that the 'acceleration settings' need to be increased (2 to 4?) for optimum mixture, but I have not experimented yet (mine probably runs richer here due to the altitude, though you can only get 95 octane fuel here).

The snorkel mod is an option depending how much BMW want for a replacement snorkel (I've not done anything to the bike which can't be 'reversed' - it's a 2006 with only just over 4,ooo km on it).

Cheers,

Dave.
 
Outtomunch said:
Cheers - will await the dyno results with great interest :thumb2

Andres
Click to expand...

Just picking up on this old thread, did the dyno results ever appear?

Fitted a Power Controller this afternoon, to mine. I already have the Remus headers, Akrapovic can fitted with std air filter and std snorkel.

Have gone with the recommended settings on the back page of the Wunderlich instructions, not to sure if it makes any differance that I am not running a high air flow air filter or not. :nenau

Just had a quick whizz up the road, and hells teeth it certainly responds a whole lot better. :D

I seem to recall a thread with people differant settings, but I cannot seem to find it now though?
 
BTBR - I've not 'got round' to getting mine dyno'd yet - though, on standard settings, the Power Controller does make a significant difference as you found.

I also can't find the thread - I think it might have been Big Simp who did all the good work/optimisation on the dyno.
 
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