R1250GS perfect, BoosterPlug?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Joined
Jul 27, 2010
Messages
5,435
Reaction score
622
Location
Blouberg, Cape Town
Bike
KTM 890 Adventure R
When BMW introduced the new 1250 ShiftCam motor they said that it would have more torque lowdown, making it almost perfect. or is it? Does it need a BoosterPlug?

Jens from BoosterPlug says:
"Feedback on the BoosterPlug for the shift cam boxers are as good as ever. It is true that low speed torque is excellent, but the choppy on/off like throttle action that comes with the lean air/fuel ratio is the same, so the new boxers still need the slightly richer mixture to perform the best they can."

Along comes Andre, who has done some crazy stuff on his 1250. Before doing this, he had the chance to put his bike on a dyno and compare the standard R1250GS to a ShiftCam with  BoosterPlug.
Compare the standard bike Red line to the BoosterPlug bike Blue line.

BoosterPlug makes a good 6HP difference throughout the rpm range, and Torque is also up through most of the rev range.

But this is not the full picture:

"This is clearly an acceleration curve, and as long as you keep moving the RPM’s, the ECU will stay in open loop and keep the BoosterPlug active.

If the acceleration had been slower, the ECU would stay long enough in each cell on the fuel map to shift to closed loop and the BoosterPlug power increase would be smaller with higher RPM. Again, the problem is that the Dyno chart does not necessarily show the full truth because you can not see how fast the acceleration is, so in reality, you can often prove what you want to prove.

But there is no doubt that the lean running engines will benefit from the BoosterPlug during brisk acceleration, so the chart doesn’t lie"

The real benefit is that BoosterPlug improves rideability at low rpm and part throttle openings, making the choppy on/off throttle much easier, and the bike a pleasure to ride, which is why many guys fit them. Which makes BoosterPlug most probably the most affordable performance improvement you can make on your bike☺
 

Attachments

  • R1250GSDyno.PNG
    R1250GSDyno.PNG
    92.8 KB · Views: 263
  • R1250GSDynoKey.PNG
    R1250GSDynoKey.PNG
    89.3 KB · Views: 261
  • BoosterPlugBMW.PNG
    BoosterPlugBMW.PNG
    147.9 KB · Views: 255
Top