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« on: June 13, 2010, 06:42:54 AM »
I have just fitted a DA supercharger kit to my 1995 M42 318is but am disappointed at the power output - only 108kw at the rear wheels after the factory chip has been re-tuned by an experienced BMW modifier, a long way short of the 170hp (about 127kw) claimed by the maker and reported by others who have done the DA conversion. My car has done 208,000km but my local BMW shop advised the engine is in good condition and had typical performance for a stock 318is. However, I notice that the performance graphs are usually reported for M44-engined cars as fitted to later 318is’ and Z3’s and when ordering the kit the maker advised that M42’s for my country (Australia) use a fuel injector that requires a 14mm hole in the manifold whereas US-market M42’s use an injector that requires a 17mm hole, the same as M44’s. Can anyone please advise the specs (flow etc) for the early and late injectors as it may be that the car needs more fuel flow to take full advantage of the 7.5 psi max boost. Otherwise I am very pleased with the kit as it is of factory standard in appearance and has retained all the smoothness of the standard engine when operating at light throttle openings.