Pre turbo/SC water injection.
#42
Do NOT spray methanol, water, or petrol before the MAF... if SD go for it...
but before the MAF and you're screwed... That's why we go to so much trouble to do remote IAT sensors after the MAF so you can spray after the MAF but before the IAT sensor. MAF sensors do NOT like any of these, period...
however give it a try if you need to see for yourself...