I used to believe that WI can be used as an 'extra' layer of safety, just like most people do.
However, experience has shown to me that this is not the case.
I currently see two options in real life:
1. You prepare and map everything without WI --- and then use WI as an extra antidet protection, accepting the cost of a few dozen horsepower (oh yes, it can easily be more than that!)
2. You prepare and map everything for operation with WI: well into DetLand, by conventional tuning standards. Ludicrous advance can (and SHOULD) be dialled in while WI is running, and ludicrously lean mixtures can (and SHOULD) be dialled in under boost.
Not for the faint of heart :lol:
A friend was mapping a 2lt turbo yesterday, with one of the most prominent Autronic tuners. He said how surprised the tuner was with the advance angles he could safely dial in, he commented that he had never seen this before. Then he mentioned that he had WI activated at 1 bar, lol...
No wonder, eh, the 0.5mm nozzle on a 2lt engine running 17psi throws quite a few water molecules in between the fuel molecules. Combustion slows down big time.
WI is the equivalent of retarding the ignition by several degrees. That's why a lot more advance has to be dialed in, to compensate for this. Or else lots of power is lost and spool is slower than before.
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