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Originally Posted by jay3000
Can the bottom end handle 75 HP from a turbo or supercharger?? What would the difference be???
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ok, well here is the deal..
A turbo or supercharger takes air,(19% oxygen), and compresses it.. The fuel injection system can keep the air/fuel ratio at about 14.7 to 1 even with the extra oxygen & air from the turbo or supercharger.
With NOS, you are injecting liquid Nitrous Oxide into the engine, about 200 times more oxygen than the fuel ingection system can handle. If left to it's self, this would lean out the mixture & act like a blow torch and melt down a cylinder head.. this is why a NOS system has an additional fuel nozzle with the NOS nozzle.
Here is the real problem: getting the mixture right
I know the companies who make the systems say its all good, but if you are off on the mixture by even a little bit, your 10k boxster engine will turn into a boat anchor in about 25 seconds...
Now back in the day when I was building air cooled Porsche engines, NOS was a BIG NO NO.. just due to the fact that the extra HP brought along with it alot of extra heat that an air cooled engine could not get rid of fast enough..