Page 82, 4.5.2.1.1 Engine: (add) Maximum turbo size is 54mm. Max size is defined as the maximum allowable diameter of the inlet housing at the point where the leading edge of the compressor wheel meets the inlet housing. All air entering the turbo must pass through this opening. No stepped inducer wheels allowed, the contour from the inducer to the exducer must be continuous with no steps. The leading edge of inducer wheel may not exceed 54mm, and must fit inside the 54mm area of the inlet housing. The use of restrictor plates or stepped inlet housings in an effort to limit compressors with inducers larger than 54mm is not acceptable. Boost controllers will be limited to a 2-stage boost control (waste gate plus one other stage). (remove sentence) The use of electronic boost controller is prohibited. (change) 1360cc to 1370cc. (add) The use of aftermarket oil pans is permissible. For the Suzuki Hayabusa, aftermarket pans must be a minimum of 2-inches in height. Minimum pan height for other models will be determined on a model-to-model basis, and pre-approval is required.
