if i did try the alky/water set up i would go strait for the 2stage with a very large reserve, like 3-5gallon, start injecting at 3psi and then more at 8 or so.

i ordered the fjo wideband set up, i sure wouldn't call it afordable but i think i will get some good use out of it. i am not going to permantly install it, going to use it like atap, just hook it up for tuning and then remove it, should last me a very long time. i didn't order a display, just the pc hookup, it will log your a/f ratio and rpm for as long as you want to record.