Snow Performance MAFU Calibration / Tweaking

[rongeur]

Sorry if this has been addressed elsewhere but my google skillz came up with nothing other than what Snow Performance recommends in their setup manual. I am looking to see how other members have calibrated their start and full spray settings. My intuition says to start when boost starts to build (on average) and full at the time of full boost. Since I am now stage 3, it really makes more sense to tap the MAP for the controller but since I installed when I was just tuned with the K03, the MAF made more sense and I have no motivation to undo all my wiring and harness splices just to switch to MAP.

Anyone have any recommendations on what to log or look for via Vag-com to really dial in my water meth injection? I would love to hear if someone has a science for this beyond "add til you feel the engine bog" which seems very crude.

[aluthman]

Pull logs and look at IAT and timing pull. Start the spray at or just before the point where temps start to climb. Make sure you are at full flow well before you see any timing pull without meth. I went to full very quickly after starting flow with my old setup.