No, it does not give access to the limit flag and/or the table.wannabethestig wrote: 1. Can nistune turn off the alpha-n maps for fuel?
2. Can nistune change this alpha-n map?
3. Can nistune change the alpha-n map trigger points?
4. If nistune can't do either and you account for the enrichment factor of the alpha-n map when you are creating your wot map does it matter?
The idea here is simple, you can think of it as a hybrid MAF/alpha N fuel map, which is perfectly OK to do on a naturally aspirated setup. But you will not find anyone doing this (if given the option) on a boosted setup, for the reasons that I have mentioned.
If you start the pull at the same RPM and go through the same psi vs RPM relationship then it will be pretty close, that is why most people won't notice this. The issue is more when starting at different RPM points and transitioning into boost, your target AFR will basically be the same regardless if you are at atmoshpheric pressure or at 20psi.. it will use the same fuel map value for both.If you build the same amount of boost per given rpm all the time then i don't think it would matter much however in the real world this doesn't happen due to how much weight is in the car the gear you are in going up hill or down your shifting rpm temperature ect. Ect. I guess a couple of commas would have helped there.
Now, this is obviously more of an issue with higher boost cars and larger turbochargers but to me it still isn't the "right" way of doing things. This is why the alpha N limit flag is NOT present in any factory turbo Nissan ROM, it is only there on the factory N/A roms.
5. Can you trick nistune/ecu into thinking you are not at wot (initiating alpha-n enrichment) but then using your fuel map?/quote]
This isn't something I would advise doing as it can have other ill affects.[/b]