How much fuel to add for Nitrous

Depends on the platform, and if there are other modifications that are already done to the bike. Some use a specific percentage across the board. I tend to take the amount of power the bike made N/A and how much it will alegedly make with the nitrous to determine percentage of fuel addition. Example: Bike makes 200rwhp now, and will make 230rwhp after the introduction of nitrous. This is a 15% increase in power, therefore it is reasonable to think it will require a 15% increase in the 200hp fueling to accomodate. While it may sem that this logic will result in the same air fuel ratio as the baseline, it usually results in a bot rocher of a mixture than the normally aspirated fueling. This is partly due to the N/A fueling already accounting for a large portion of the parasitic losses in the system (general friction, water pump, oil pump, etc). A 30 shot is pretty small, assuming it is for a 150hp+ application, and is usually pretty safe to run with stock or close to stock ignition timing. This of course is just a baseline that "Should" be a safe starting point. Tuning can likely reduce the fueling in this case. Some things to keep in mind are the actual flow capacity of teh fuel system and the current duty cycle of the injectors. To small of a pump, a poorly flowing filter, injectors that are small, or injectors that are aready near their maximum duty cycle will not allow increased in fuel flow even thought the "numbers" are higher in the tuning.

Question from Customer If I am only planning on spraying a 30 shot of nitrous, how much fuel should I be adding to start?

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