It MUST be disabled through flashing the ECU.Īll modern, liquid cooled, fuel injected bikes also suffer from much higher than optimal engine temperatures.
This is the primary contributor to most bike’s massively “twitchy” or “jerky” throttle transitions, and it is IMPOSSIBLE to address this with ANY piggyback system. In fact, almost all modern fuel injected motorcycles have deceleration fuel cuts! Instead of gradually increasing/decreasing fuel injector pulse width (or duty cycle depending on the system) with engine RPM, throttle position and/or engine load like a volume knob, this emissions feature simply shuts off the fuel injectors entirely the moment you roll off the throttle like a light switch. These bikes (we’re still talking about a simple FZ/MT-07) also suffer from a massive fuel cut on deceleration, which is programmed directly into the stock ECU by Yamaha for emissions compliance. This is part of the reason why most Power Commander users for these bikes still experience significant popping/backfiring on deceleration and light throttle transition with aftermarket intake/exhaust systems! Without specific control over both sets of fuel mapping tables, some of the lighter throttle/load points simply can’t be properly tuned. They don’t allow for adjustment of the individual IAP vs RPM and TPS v RPM tables, which the ECU references and weights differently depending on the particular load, throttle, and engine speed (RPM) data inputs that are constantly being referenced by the fuel mapping algorithms.
Let’s fast forward to the modern era of motorcycle fuel injection systems and emissions compliance! Even on a relatively simple fuel injection system, like the one used on a Yamaha FZ/MT-07, Power Commanders, and every other piggyback fuel controller, simply doesn’t cut it anymore. Before ECU flashing, they were the best solution on the market!
#Power commander vs ecu flash install
Depending on the bike, they usually cost anywhere between $320 and a whopping $1250, take 1-3 hours to properly install inline with the bike’s fuel injection, and sometimes ignition, system. They allow for adjustment of the TPS (throttle position) vs RPM fuel mapping with a high level of resolution for most applications. Nels, and our technicians, have installed THOUSANDS of these piggyback fuel controllers on motorcycles over the past decade or so, because they’re a great tool for an experienced and qualified tuner to use when adjusting fuel, and sometimes ignition timing, mapping on a dyno when no other solutions are/were available. The single most popular piggyback fuel controller on the market is the Power Commander, but many others exist on the market (Bazzaz, RapidBike, EJK, etc). Until the late 2000’s, there simply wasn’t access to the mapping in stock ECU’s, so a piggyback fuel controller (a device that intercepts and taps into the fuel injectors, throttle position sensor, and sometimes several other fuel injection components) had to be used to tune and dial in a motorcycle. PLEASE, unless there is no quality ECU flashing available for your bike, don’t waste your money on a Power Commander, Bazzaz or any other piggyback style fuel controller! Quite simply, they’re a waste of money when there’s total control over the mapping in the stock ECU for most modern bikes on the market.
#Power commander vs ecu flash how to
This is going to be a long one, but we think that it is absolutely essential that anyone looking to maximize their motorcycle’s performance (and their own personal riding enjoyment) understand how to best tune and dial in their bike.
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