Just have a simple question for all you Scion guru's! How much nitrous can these lil boxes handle? Im thinking of going with a wet 50 shot, the NX EFI 4 Cyl. package they have(shark nozzle). So is 50 max basically with no engine mods or anything or is 75 doable?

A 50 shot should be safe given the engine size and the fact it's a fuel/nitrous setup. I'm going to be playing with a 100+ shot, but it will use propane Vs fuel. BTW, always ensure your Air to Fuel ratio is correct after installation.

I'm gunna be redoing my system...dry kit...and I was pondering doing a write up with pics on the install.

But the one thing I do love is the egt gauge, that thing lets you know exactly when to turn the system off.