After market power mods

[laterider]

I just installed an FRK module on my 07K12GT. According to the US distributor, the module will make my bike run a little richer. A consequence of that is smoother throttle operation. My bike, great bike, has always had a little "bounce" in the throttle (occasional surge or drop off NOT related to any throttle movement). This mod has eliminated the "bounce."

Results, smoother shifting (up and down), better maintenance throttle in the corners and better engine braking with no pops and grabbing.

This is probably sacrilege to post on the Mother forum. Any comments?

[john1691]

I had to wonder how much power you needed..........:laugh But the description of why you did it makes sence. My K12S also has some throttle issues. When checking for recalls I was told it was one that needed a computer update, but when I got to the dealer was told it didn't, just the oil cap replacement. Even when warm it will surge at traffic stops, not extreme but noticeable.

[rik]

I had to wonder how much power you needed..........:laugh But the description of why you did it makes sence. My K12S also has some throttle issues. When checking for recalls I was told it was one that needed a computer update, but when I got to the dealer was told it didn't, just the oil cap replacement. Even when warm it will surge at traffic stops, not extreme but noticeable.

Had the update done the spring after I took ownership. Bike is 06'. Made a big difference. At that time dealer told me all 05' and 06' 12s needed update.


On a somber note. Am having to put out $141.50 for a battery today. Lucky me.

[john1691]

You don't have to...........Look at Odyssey or Westco. I got an Odyssey for $85.

[rik]

You don't have to...........Look at Odyssey or Westco. I got an Odyssey for $85.

Thanks for the info.

[PGlaves]

Since the introduction of the Oilheads in 1993 - maybe a little before that even - BMW has designed the engine management on the bikes to be very close to the ragged edge of too lean. These designs mean that if even a little richer than design specs they still meet emissions control regulations. But it also means that if just a little leaner than specs, they run rather awful - surging, and all of that.

So a device that enrichens the mixture - (example: Oilhead - Techlusion) - improves things, even if probably an illegal modification to the certified emissions control system. Remapping or "upgrade" by BMW software would presumably still meet the emissions certification for the European Union, US, and other markets.

[laterider]

After 16 months with the FRK module, I removed it and substituted a BoosterPlug resistance fooler with, I think, a better design. The FRK fooler was telling the ECU that the AIT was around 25 degrees Fahrenheit all the time. This produced a really rich mixture in the summer and hard starting on a lean mixture when the temperature dropped in winter.

The BoosterPlug improved the linearity in the temp sent to the ECU. At a wide range of operation temps, the BoosterPlug offset is very close to 6% all the time. Much smoother throttle and easier starting in cold weather.

Thought you might like a follow up post.