Quote:
Originally Posted by seven_227
As i recall in one of the japanese Best Motoring International episodes they mentioned that for every +1 degree Celsius above 23 or 25 your engine will lose -7hp, but im not sure of the info it doesnt seem right sorry
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The 335i has its own threshhold of heat soak based on underhood temps and its I/C efficiency. The ability to provide cold air and dissipate heat is going to be particular to the car. Also, the actual percentage of power made from the turbo boost is also a huge factor. In the case of the 335i, that 8.5psi is about 100HP - or 30% of the total power. Some cars make more or less power from FI than others. So I doubt there is a practical rule of thumb that works for all FI cars.