I have been using nitrous for about 3 years on my Zetec.
I have jetted 100/125HP with no problems. (Though I prefer the 55-75 HP range.)
Never broke or blown a single thing, never even backfired.
Its all in the tune and having a little knowledge.
I recommend against nitrous for the average person because rebuilding the engine is beyond their skill/desire, and buying and installing a new engine is beyond their budget/skill/desire.
I read books, asked some long time racers, and generally got as much info on the subject as I could to make an informed choice.
And I want to make sure that other people on this board do the same as well.
To many people talk without knowing, or having done.
The pistons will shatter from a backfire which would be from running rich, they melted from running lean.
There really is little room for error on these engines when dealing with nitrous.
But if you stay in the "sweat spot" they respond very well.
I agree a wet kit on a zetec borders on stupid.
But any dry kit will work very much the same.
I prefer Zex beacuse it monitors bottle pressure vs fuel pressure, and it uses the TPS voltage instead of a micro-switch.
