Dry Shot MAF limit?

[CDNFB]

So, I’m driving to work today and it’s -30°C (-22°F) and I’m thinking about how a dry shot NOX system uses the cold discharged nitrous directed through the MAF which causes the required fuel enrichment. How cold is the nitrous discharge? There must be a limit to the lowest temperature the MAF can sense, thus a limit to the fuel enrichment, right? What is that low temp limit?

Man, this car can really haul a** when it’s this cold!

(No I do not have a system installed.......yet!!)

[1DangerousV6]

i've sprayed up to a 200 dry shot across my MAF ..i forget what the exact temp sensor reading was but it was still within range on the gauge on HP Tuners

[CDNFB]

I appreciate the response and here is why I ask this question:

At a 70°F day, if you sprayed....lets say a conservative dry 75 shot, and the MAF saw a -22°F (just guessing here) the fuel enrichment to maintain fuel/nitrous ratio happens and all is fine.

I'm thinking that if the ambient air temp is already at -22°F and the fuel delivery is already established for that, application of the Nitrous could be detrimental to the health of the engine!(yes I get into the odd tussle once in a while even at these low temps!)

So I guess the better question is:

Is there a low temperature limit at which a dry shot NOX system should not be used?
or even better yet:
Is the dry system engineered to ensure a proper fuel/Nitrous ratio at a certain ambient temperature, and the colder it gets from that temperature the more that ratio becomes unbalanced towards the dangerous?

If this is true, at -30°F the better (safer) power modification to the engine might be Forced Induction rather than nitrous.

[1DangerousV6]

the air you take in is already warmer by the time it hits the MAF..on a -22F day..the air temp sensor will actually read quite a bit warmer than -22F ..its true that boost does not create a power gain as violently as nitrous..but you should still be able to use either at those temps

[CDNFB]

What would warm that air before it hits the MAF? The only heat that I can see that the intake air would be subject too is whatever is conducted from the engine compartment though the ducting. I'm unsure if the Electronic Throttle Body heated by engine coolant? But then again that's after the MAF.

I guess there would be no problem if I installed a wet shot system. Wouldn't have to worry about the outside air temp then.

I'm looking for a power adder that will be functional throughout the extreme range of operating conditions that I subject this poor car to. It's an all weather bird and not a fairweather bird.

[Matt G]

Originally posted by 1DangerousV6:
i've sprayed up to a 200 dry shot across my MAF

Don't mean to thread jack but..

What internal motor work did you have done when you were running a dry 200 shot spraying before the MAF?

I am trying to figure out the maximum amount of spray(dry) a stock motor can take before getting damaged.

[1DangerousV6]

i have forged pistons, rings, pins, and rods..the motor itself held up fine..but eventually i blew a head gasket