So - I fitted a Power Commander last week...

Greggers

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Yes, I did ...

I have to confess it was a leedle bit pricey, but the PCIII came to me at £265.00 and the dyno tuning was £140.00. Ok, now the WTF moment is over you can sit back on your seat...

Fitting it was a bit of a pain, but not beyond anyone who had a modicum of spanner twirling ability. The hardest bit was jiggling around trying to get the airbox back on, but that's another story... In a nutshell, remove top 'tank' panel, side 'tank' panels, RH small side-panel, battery (but re-connect with fly-cables if you don't want the service indicator to come on ..DAMHIKT-IJD...), air filter (take this opportunity to give it a nice little blow-job as well) and finally the air-box. Actually fitting it was a piece of cake - all the connectors are in the right place in the loom, i.e. the cable are the right length - apart from the earth strap which I had to lengthen - and everything fell to hand nicely. I took the opportunity to give everything a good clean while I was there and also sprayed the connectors with a little silicon grease too just to aid reassembly and help with additional waterproofing...
To coin a phrase, "re-assembly is the reverse of disassembly", so everything went back together and I didn't even have any screws spare!

I couldn't wait to give it a go, so at half past midnight I wheeled it out and took it for a squirt up the road - I was not happy... it was popping and farting, misfiring and backfiring like a b!tch, so I went slowly back and rolled it into the garage.The next day I needed to use the bike but wasn't about to strip it all off again, so just took it as it was. It ran ok-ish, and was really poppy on the over-run but it wasn't so bad. I used it like this for the weekend and everything kept going. It was only after I RTFM that I saw that the box came programmed with a fuelling map for a stock bike, so I can only put the misfire down to a fuelling incompatibility with the latest BMW ignition/engine control map.

The following Monday I had the appointment with Moorespeed and their Dyno. Colin there did a great job on the bikealthough he'd never worked on an F800GS before and almost fell off it riding it up the ramp - he's more used to those teeny tiny 180HP sportsbikes... So, after it was strapped on the dyno he gave it a first run which gave 78 rwhp, but with holes and dips like you wouldn't believe in the A/F ratio. After he'd optimised the PCIII, there was 4 hp more thoughout the curve but more importantly the A/F line was virtually flat at 13.2. He made a comment about having to make some fairly significant fuelling adjustments in parts of the curve, both adding AND removing fuel at almost all points.

The net result....? It's really sharpened everything up - throttle response is better, there's not the fluffy, slightly boggy feeling in the mid-range any more, it will pull from 1200 rpm with no problem and not a hint of a stall. Get the motor spinning and she really wants to fly - crisp response and much much sharper all round, in fact at one time it was going so well in 5th that went to change up into 6th ... only to find I was already there ... hmmmm.

Oh - there's another benefit too - I was a little concerned that the fuel economy might suffer - before I fitted the PCIII it had just flipped from 57 to 58 ... this morning I checked it and it has already gone to 60. I'm generally not too anal about looking at MPG, but I took a peek and at a steady 60mph on a flat road with no significant wind, it was giving 135mpg...!

One teeny tiny niggle- there's a bit of a misfire that Colin couldn't tune out - but that's just at the point where the road-speed tells the ECU to lift the idle speed from 1250 to 1950 rpm... I'm pretty sure that if I was able to roll-back the ignition map to the previous version (remember my beef a few weeks back?) that this wouldn't actually be an issue, almost certainly wouldn't be for those who still have an older version of the software on board.

Overall .... yes I'm pleased!

ps - if anyone does stump up the dosh for one, I can send them a copy of my optimised fuel map which might save a few quid on Dyno time...

Greg
 
Well.... when I first got mine it was averaging 49 ... it didn't raise an eyebrow cos it was the same as Mark2Jag's at the time ... then I got the 'new' software (which I hate with a fukken passion) at it slid up to 53 and never got it better than that. Then I rode the 800S loan bike at CWs - it was as lumpy as fcuk, sounded like a Massey Fergusson tractor, but the bloody thing absolutely flew ... yet it had 59 on the OBC ...!

I've mostly ridden mine like I've just robbed a bank...well, within reason anyway, but it gets a good ragging whenever it's feasible... and before the PC..yup, still stuck at 53 AVMpg.. Now I'm expecting it to creep over the 60 mark with no change in riding pattern..

But anyway, the change in the character and 'zip' the motor's got now pleases me a lot ..:D

G
 
fuel consumption

I've been using mrs spannermans 800gs to commute to notttingham on a fairly frequent basis 52 mile round trip on A roads 60/70 mph and she is doing 64 mpg the bike that is the bike has done almost 5000 miles and the bike is standard :thumb2
 
Yes, I did ...


The net result....? It's really sharpened everything up - throttle response is better, there's not the fluffy, slightly boggy feeling in the mid-range any more, it will pull from 1200 rpm with no problem and not a hint of a stall. Get the motor spinning and she really wants to fly - crisp response and much much sharper all round, in fact at one time it was going so well in 5th that went to change up into 6th ... only to find I was already there ... hmmmm.


Greg


I think the really relevant bit seems to have been overlooked... :nenau

G
 


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