(The BoosterPlug is only active in open loop) Experiments using an air-turbine handpiece were conducted in an 825.4-m 3 clinical teaching laboratory at the School of Dental Sciences, Newcastle University, United Kingdom, with a supply and extract heating, ventilation, and air conditioning (HVAC) system providing 6.5 air changes per hour (ACH assessed by an external engineering contractor) via ceiling vents. The fact that the AFR difference (between the stock system and the aftermarket parts) is relatively small in open loop conditions,makes it possible for the BoosterPlug to cover all combinations of exhausts and filters on the bike. Normally we see the open loop AFR go from around 14,4:1 to 14,5:1 with the aftermarket exhausts, and now you really need the small controlled fuel enrichment from the BoosterPlug to restore the smooth throttle action and to prevent the engine to stall easily.
See the "How it works" page for a full explanation on open loop and closed loop operation)īut as the aftermarket parts will flow slightly more air in low RPM conditions too, the rideability will be even worse than on the stock bike.
The BoosterPlug is active in open loop conditions which is idle, low RPM and during acceleration and engine braking. (Constant medium and high RPM are closed loop operation, and the O2 sensor is in charge here. The O2 sensor in the exhaust will adjust the mixture back to the original AFR in all closed loop situations (Higher RPM), and keep your engine safe.
In a modern fuel injected bike, there's no risk of damaging the engine by running it too lean when you install an aftermarket exhaust or K&N filter (With or without the BoosterPlug). The K&N 67-2523 cat-back exhaust kit is engineered to increase performance, deliver robust sound, and install quickly and easily on certain Ford F-150. This exhaust system is designed to have an aggressive sound. K&N uses 304 Stainlees steel from the exhaust mount to the tip.
Most aftermarket filters and exhausts will flow a lot more air at higher RPM, but at low RPM's the difference between the flow resistance in the original exhaust and the aftermarket system is minimal - so in low RPM conditions, the AFR (Air/Fuel Ratio) is almost the same. The K&N Performance Exhaust System is engineered using advanced computer software and real world experience to provide optimal horsepower and torque gains. (Which you should for several other reasons.) The BoosterPlug will keep your bike covered for all combinations of aftermarket air filters and exhausts (with or without a catalytic converter) - as long as you keep the O2 (Lambda) sensor installed in the exhaust.