all of which are false killy
they are not complex, especially the cooling mist kit. it operates on the suction of the blower to pull the methanol out... no chance for pump failure.
also my kit (devils own) is set to shut the fire down if the pump does not activate.
it is easy to tune and only two pulls to get it right.
methanol injection has come a LOOOONNGGG way recently with all the new competitors to the market. A huge advantage of methanol over an air ot air is the added octane.. it works wonders at retarding knock. you will be able to run more timing and compression hence more power.
with all that said, I would get the Snow kit made for the mustang if I did it again..... and I will
my kit uses a 3 bar map sensor that I instaleld while the snow kit is all contained inside the controller. it is a very nice product and I have not read of any failures.
I have blown some motors, but none were due to detination.. most oiling issues from oil pump gears and a broken hose during a WOT run.
Methanol works GREAT! you can actually feel it even over the boost when it hits, an extra 50 rwhp is a kick in the ass,