| The Yamaha engineers have done a great job with the fuel injection. They have many sensors that are used to determine what the proper fuel mixture should be under almost any condition. What they don?t have is a sensor to detect if you have removed your air box lid, put in an aftermarket filter, or changed your exhaust system. That?s where the DRD Mod Box comes in. The DRD Mod Box uses the stock fuel map and all of the sensors that are built in and then modifying the input to let the vehicle know that there is a DRD exhaust or other modifications that the sensors cannot detect. This is all accomplished using state of the art data acquisition equipment mounted on the vehicle and the riding it under various conditions. Though DRD owns and uses a dyno, DRD does not rely solely on a dyno. There are very few ?dyno races?, so why spend a lot of time tuning to give the best dyno run? Multi time champion and exceptional test rider Doug Dubach, rides with the data acquisition equipment logging various sensors as well as his ?MARK? button. This button allows him to ?mark? an area that he feels is lacking in performance, or is performing well, so that further tuning and adjustments may be made in that particular area, under those particular conditions. The DRD Mod Box is set for optimal performance for your particular vehicle when you purchase it. But, you may still make further fine tuning adjustments to suit your riding style or track conditions. The DRD Mod Box allows adjustments to be made in the amount of fuel at different load settings and also allows adjustments to be made as to when these load settings are in effect. This gives you plenty of room to fine tune as you see fit. | The DRD Mod Box is a must have for all fuel injected vehicles if you wish to get the most performance from the exhaust system. $299.99 Click here to buy the 08 Rhino mod box! Click here to buy the Raptor Mod Box ! Click here to buy the RMZ450 Mod Box |