Hello friends
The improvement to R850 is much better, because the maps in to the stock chip is too preservative.
By stage 5 chip the R850R have consumption up tp 55 MPG and the torque and power goes up to 15-20 %.
I think that R850 engine is the best old boxer for tuning, for performance and economy consumption
Edit :
Also i need to tell, that the forum (UKGSER) help us to much, we were able to talk constructively, thank so much all forum's friends, especially the English friends who tried to start the CHIPS and applauded my efforts
In the coming days I will present the latest dyno by a special tuning chip based on all maps (R1100S-R1150GS-R-RT-RS) to a R1150 (single spark) with large intake tubes (from RT-RS), big camshafts, free air filter and de-cat special system exhaust for updating knowledge us all
"Stage 4" Chip Report
R850GS 2000W, standard everything, no cat.
Install
The chip arrived during the week, a few days after ordering, and I set about installing it this morning, albeit with a little trepidation, as I didn't want to F*** anything up on an otherwise perfect bike.
After peeling back the tank, and removing the Motronic box, I suddenly realised I needed a special T27 6 lobe tork head to remove the cover. Sounds straightforwards, but if this had been in some instructions, I'd have been able to pick one up last time I was out and about, not waste a couple of hours in traffic. For reference, make sure the one you get has a sufficiently wide centre hole to accommodate the "pin" on the motronic screwhead, otherwise you'll have to drill it out. I went through 3 different types at the motorist discount centre before finding one which would fit.
As soon as I'd got the right one, the screws came straight out and then it was a case of carefully prising open the case, held together by a 5mm bead of clear silicone. Best to take a bit of time doing this, so you don't slip and either injure yourself, or slide the screwdriver into the internals of the motronic. I took my time and all went smoothly, wedging open each corner and working around the unit until it came open easily.
The original chip had a white plastic shield clipped over the top, which was pretty easy to prise off, again done with great care.
Then I just swapped over the chip with the new one, and reassembled everything. I think if I'd had the t27 tork drive, I'd have completed the whole op in about 45mins. It's really not a big job.
Test
The bike started first time, and immediately ran well. Initial observations were that it sounded crisper, and revved more smoothly.
As the bike warmed up, I dropped the choke and it ran on tickover perfectly, again sounding more crisp than before and running smoother.
"there must be a catch" I thought to myself so got my gear on and went of for a spin.
Immediately noticed a quicker throttle response. So when you blip the throttle downshifting, it responds immediately. Less lag.
I found I was able to get up the box a bit sooner as well, with the bike pulling more smoothly low down. It felt more willing.
"there must be a catch" I thought again, so went a bit further, onto some dual carriageway. For some reason, it took me a few miles before I had a clear run without cars, but leading up to the first proper blast, it felt quicker through, and in, the traffic.
As soon as I had a chance to wind the bike up in 4th and 5th I immediately noticed a much stronger pull
over 5500rpm
. I've not seen the power curve charts yet, but this seems to be where the torque starts coming on strong.
Most noticeable is the ability to accelerate strongly from 80mph instilling more confidence on fast roads, and feeling less vulnerable if needing to pull away. I understand the gearing is different on the 1100GS, but on my 850, it feels spot on.
After a good blast for 6-7 miles, I pulled off the dual carriageway, back into traffic and the bike ran perfectly.
Conclusion
Well worth doing. It's given the bike a much "younger" feel. Like taking out the latest model, but without the engine feeling like it's been overtuned. It just feels right. No catch.
Great work John
Thanks, I'm already looking forward to my next ride and will keep an eye on MPG.
Next will be the 1100GS with a Remus full pipe, I'll post on that in a few weeks.
Also i think the system "air intakes" by tubes both on incetion thorrotles, due to the long tubes, in conjunction with Κ / N (air filter) and long exhaust pipes, achieved effectively the flow "venturi" from very low until high rpms.
