![]() PAIR affects the accuracy of the wideband O2 sensor used in the tuning process. PAIR Valve - Passive AIR Injection, injects air into the exhaust system to burn any unburned fuel. On the Lambda scale, 1 = 14.7 AFR, less than 1 is rich and greater than 1 is lean. Lambda - A measure of air and fuel combustion (like AFR) but uses a scale based on 1.00 being the most efficient burn of fuel. Tuners are typically looking for an AFR of 13 or 0.89 Lambda. 14.7 AFR does not necessarily result in the most power. Valve adjustment Terminology ECU - Engine Control Unit, an onboard computer that calculates the ideal amount of fuel to deliver to the engine AFR - Air to Fuel Ratio, measures the efficiency of combustion of fuel, 14.7 AFR (1 Lambda) is complete combustion (most efficient). PAIR valve removal (keep reading for explanation) - Kit by Smartmoto - If your bike has lots of Miles/Kilometers on it, then there are additional preparation steps:1. The fuel's octane is very important for the tuner to properly set the ignition timing.Ĥ. ![]() Fresh fuel with the octane level you use most often, do not fill your tank with 93 octane if you usually use 89. Mandatory Preparation (You can ask a shop to do the prep work for you)1. This will help you get the best result for the time and money you will spend on tuning. So you want to get your bike dyno tuned? Before you do, you need to prepare your bike and have a basic understanding of dyno tuning. ![]() So I decided to write this posting based on my experience tuning my own bikes and working with tuners at local shops. After reading the postings in the forum, I noticed there were a lot of questions related to performance tuning.
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