BMW R1200R R1150R/T F800 K1200R R1100R/T R1250R RnineT Message Board

Man I'm really stoked about my Rockster and the exhaust I'm playing with.First I installed a sebring y-pipe.I was riding this morning and 1st gear roll-on wheelies were fairly easy but I want a little more noise.
So I had this cheap supertrapp slip-on I used to have on a roadstar warrior.I took the stock muffler off and put the supertrapp on.It sounds pretty good but a little loud.I'm going to order some disks and screws to put on the muffler cause the original ones are lost.I'm hoping that with the adjustability of the disks and a power commander I'll get the sound and power range I'm looking for.

After 179 reads and no replies I am going to ask if anyone has installed a power commander and if anyone has any advice.Also I will try to post some pictures of my custom supertrapp exhaust.I recieved and installed eight diffuser disks and an end cap so the bike sounds better and runs better but I'm sure I need more fuel to compensate for the new exhaust.

Hell, you should have done a search on Power Commander. I've posted several times about mine.

Yes, get the PCIII and dyno tune the bike. Slap on some good K&N or BCM filter while you're at it. If you're gonna go derestricted then might as well go whole hog. It ain't gonna be cheap and the power gain isn't much, but throttle response is much livelier and crisper. It was worth it for me, but not to the typical BMW owners who think that stock exhaust and stock fuel mapping are good enough.

Remapping (i.e. rejetting from days gone by) is necessary if you free up the air flow...meaning from start to finish, meaning de-restricting the air intake and freeing up the exhaust flow. Just slapping on a can won't do the job, ya gotta free up the intake as well. If you can get larger diameter headers thats even better.

I've owned & wrenched on many bikes of all types and am itching to get my first BMW, an R1200R. The first thing I'll do is hunt down as many dyno run plots as I can find with as many different pipe/filter/remapping configurations as I can find. That will help make the right selection of pipe/filter/remapping combo.

Years ago you could get between 10 & 20% HP gains and some torque gain as well. But todays modern bikes are pretty much tweaked-out from the factory. So the advantage today is to tune out any flat spot in the torque curve. Modern bikes have a dip in the torque curves because of EPA and Sound level restrictions. I would think BWM is no different.

Smoothing out the torque curve is what will provide that much livelier and crisper throttle response fnfalman is talking about. If you're lucky you might even get a few more ponies.

NOW...having said all that...I've yet to find any dyno plots for any BMW. If anyone out there knows where such things can be found and research please let me know.

I'm not worried about the cost.I've probably have spent $10,000 on upgrades and mods on the harleys and yamahas I've had in the past six years I've been back in motorcycling.
I also apologize for not doing a search.With the sparse posting that goes on in this forum I did'nt think anyone would mind.

We don't mind reposting at all, but it would probably helped you having to post and then re-read the re-posts.

The PCIII for a Beemer is the more expensive one from DynoJet. Because of the quirky BMW engine's management they have to use the wide range adjustment model instead of the regular PCIII, so the Beemer PCIII runs around close to $200 more than the standard PCIII with other bikes. Installing it is no problem but you do need to remove & prop up the tank. And then it's worthless if you don't put the bike on the dyno and tune it. Once tuned, you will find that the bike's nasty mid-range flat spot is gone!!! And the throttle response is very crisp and it loves to rev to the top range.

Since that you've gone that far, might as well get a new air intake nozzle from Wunderlich. They have two models to choose from. Add a free flow air filter too.

The Rock isn't going to eat any rice burner alive with all the mods, but it runs much better. Next thing you know, you're contemplating sportier suspension bits from Ohlins or Works Performance Shocks.

fnfalman wrote:
.........might as well get a new air intake nozzle from Wunderlich. They have two models to choose from............

I can't seem to find such a thing...do you have a link ?

Thanks fnfalman for the info.It seems there is no end to mods once you start and it can get expensive.I will probably get a power commander and do some sort of mod for the intake and then have it dynoed and mapped.I like this bike alot and it just fits the way I ride.

I have faster and more maneuverable bikes but it's so fun riding The Rock, especially in the twisties where you have to work at it a bit. It's slow and heavy but it can still handle pretty well.

I'm going to upgrade my suspensions this year because I'm sick of the soft and quickly worn factory craps.

Anyway, Santa Cruz BMW http:///www.santacruzbmw.com is the distributor in the US for Wunderlich and the carbon fiber sport air intake nozzle part # is 8160289. So contact Santa Cruz and ask them how much this thing cost. If memory serves, I "think" that it's close to $400.