In fact, even with the corrected fueling (and timing) we saw no performance advantage over the factory muffler from either type of exhaust system. Without changes to the WOT Fueling these systems caused a loss in power due to a lean condition. We optimized the WOT Fueling for two different exhaust systems (high-flow, and straight-through mufflers). These changes are not measured by the ECU’s manifold pressure sensor which is used to calculate airflow and thus fueling. Specifically, we saw the need for this option due to exhaust system changes which affect the airflow through the engine during valve overlap events. Wide Open Throttle Fueling This option allows you to increase the wide open throttle (WOT) fueling to account for airflow changes you have made to the exhaust system. With the extra octane we were able to increase power by 6% on average, and to 9.2HP more measured at the tire. This is our maximum performance tune which require 93 Octane fuel or better. You’ll see an extra 8.5HP to the tire and 5% overall under the curve. This tune steps up the power again to take advantage of Premium Octane Fuel. This tune increase power just a bit more than the 87 Octane tune due to the extra octane and increases the power gain up to 6HP to the tire. This tune allows you to run low octane fuel and still gives you an extra 5HP to the tire and an average of 4% more power everywhere. The Max Energy Spectrum offers tuning and versatility never offered for the Polaris RZR XP/XP4 1000. You can even recalibrate the speedometer for larger tires, and even for portals. Whether you need a good belt break-in tune, or an all out Race tune with changes to the speed limiters, you're set. Not only is there a tune specifically for each octane of pump gas, but there are numerous other customizable features that let you dial in the tune for your RZR to be exactly what you want. During the 34 days of dyno tuning and testing we developed over 100 different custom tunes to find the most power possible out of each octane. Our Hypertech Engineers developed features that truly redefine the capability of the Max Energy Spectrum Power Programmer. Tuning – XP 1000 and RS1 - Dyno Chart (1000) This tune uses the maximum power boost curve in Stage 3, and a very aggressive timing curve to give you the most powerful tune possible from your RZR. Failure to do so could result in engine damage. This tune requires the use of high octane race fuel. This tune maximizes the power possible with premium octane pump gas by increasing boost and eliminating factory throttle restrictions. This tune builds on top of the Stage 1 tune and increases boost slightly for extra power. This tune adds a nice bump in power by optimizing the spark map and removing all throttle restrictions from the factory tuning. The Max Energy Spectrum offers tuning and versatility never offered for the Polaris XP/XP4 Turbos. We do recommend an aftermarket clutch kit with Stage 3 and Stage 3RG to ensure the additional power does not shorten belt life. All tunes offer lower EGTs than the factory tune, and do not require retuning for air intakes and exhaust modifications. Stage 3 maximizes the power possible with premium octane pump gas, and Stage 3-RG requires race fuel to give you the most power possible from your RZR. Stage 2 does the same and adds a little more boost for extra power. Stage 1 tuning adds a nice bump in power by optimizing the spark map and removing all throttle restrictions. Our Hypertech Engineers developed features that truly redefine the capability of the Polaris XP Turbo and Turbo S. Optimized Engine Tuning For Maximum Power & Performance XP Turbo and Turbo S - Dyno Chart (Turbo)
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