he guys back in the lab at Dynojet Research have done it again. Coming hot on the heels of that “Accelerator Pump” function they’ve just added to the Power Commander III USB, an easily downloaded and installed program-update that’ll trigger an adjustable shot of extra fuel to the injectors—just like those old accelerator pumps did for carburetors when you cracked the throttle, here they come one more time. This latest, and just made available, PCIII USB upgrade/accessory is pretty cool, too. It’s the Dynojet Quick Shifter (DQS), and this one allows full-throttle, clutchless up-shifting.

The Dynojet Quick Shifter is a PCIII USB upgrade that allows full-throttle, clutchless up-shifting.

Racers are going to love this thing. Hard-charging street guys will have plenty of fun with the DQS, too. A Quick Shifter dramatically changes the way you ride. For racers track times are going to drop, and street riders, well, they’re just going to get quicker. Shifting will never be the same. During a normal “up shift” you roll off the throttle, pull in the clutch, engage the next higher gear, release the clutch and get back into the throttle. All of that takes time, and in racing (or quick street riding) that’s time wasted. Cutting the throttle, even just slightly, then having to disengage/engage the clutch slows progress. It can be the difference between winning and losing. The Quick Shifter eliminates all that. Now you just hold that throttle WFO and click up through the gears, no clutch. And no wasted time.

The Quick Shifter permits those full-throttle, clutchless up-shifts by momentarily cutting the fuel to the injectors. That nano-second fuel interruption unloads the transmission, allowing a quick and positive shift up to the next gear without having to roll off the throttle, or use the clutch. The PCIII USB already has all of the Quick Shifter functionality in it, bundled in with the main fuel controller. The Quick Shifter upgrade puts it to use, and it’s fully adjustable. With the provided software the amount of fuel interruption “kill time” can be set by the rider. You can program-in a minimum RPM for the DQS system to become active, too, keeping the system from kicking-in at too low of an RPM, such as during regular low-speed road riding. And installation is easy. The DQS works with all PCIII USBs, plugging directly into the expansion port. There’s no need to cut or splice into any of the bike’s wiring harness, either, and there are three basic choices of switches that can be used to activate the DQS.

The Shift Rod Pressure/Tension Sensor is the Quick Shifter’s universal sensor, and it mounts right into the shift rod.

The “Shift Rod Pressure/Tension Sensor” is the Quick Shifter’s universal sensor, mounting right in the shift rod. You’ll have to swap-in the appropriate length and thread shift rod, but for most applications Dynojet offers a Shift Rod Kit to facilitate an easy installation. The sensor is available in both “push” and “pull” styles, too, depending on the direction the shift rod moves during an up-shift.

Dynojet’s Linear Travel Sensor is for applications in which a bike might not have an appropriate shift rod.


One end of the Linear Travel Sensor mounts right to the shift lever itself and the other end goes to a fixed point on the chassis

For applications where a bike might not have an appropriate shift rod, or for when the universal Shift Rod Sensor just won’t fit, Dynojet’s got a Linear Travel Sensor to use. One end of this sensor mounts right to the shift lever itself, which usually requires drilling and tapping a hole in the lever, and the other end goes to a fixed point on the chassis. This sensor is also available in both “push” and “pull” styles, and a universal mounting kit for the chassis/frame connection is included.

A handlebar-mounted activation switch that features gold-plated contacts is also available.

There’s a handlebar-mounted activation switch available, too. This one will work in situations where either of those other two sensors might not be legal for a particular racing organization, might be impractical to fit up, or just isn’t preferred. The handlebar switch-button features gold-plated contacts for long-life durability and the least amount of electrical resistance, and there’s a CNC-machined handlebar bracket allowing the button to be positioned exactly where a rider wants it for maximum comfort and accessibility. Using the handlebar switch, however, does slightly alter how those clutchless up-shifts are made. It requires that the rider first slightly preload the shift lever, press the handlebar-mounted switch, and then complete the clutchless shift. No matter what sensor is chosen, though, every Quick Shifter Kit comes with all the mounting and adjusting instructions and the required software to activate the Quick Shifter through the Power Commander III USB. It’s all backed up with free telephone and Internet tech support, too.

Cool stuff. The DQS, along with that Accelerator Pump function, makes the Power Commander III USB an even more feature-packed and better-all-around performer. That Accelerator Pump function—which is free, just download it from the Dynojet website www.powercommander.com, takes care of things during around-town riding by smoothing out the engine during sudden throttle action, and now there’s the Quick Shifter to take over from there for racer-like response during WFO up-shifts. Check with your rep for DQS ordering and delivery. PCIII USB customers are going to want it all.