Is $400 a good price for a ZEX N2O kit? What happens if you spray with an empty bottle? I read that the 10lb bottles last 3 minutes, I didn't know that, that's not enough for me I guess I will be filling up that bottle every week. $30 a week that's not fun. Also, I have the Bosch Spark plugs, are this good enough for N2O? (4 negative, ground things or what ever they call it) Zex spark plugs bring 3.

 

No offense, but sounds like you should do a lot more research on Nitrous before you use it. Let's say you run the quarter in 15 flat with the Zex kit. Three minutes is 12 full out runs shooting out of the hole. I wouldn't really recommend shooting for long durations - like more than a 1/4 mile run. If you really want to, NOS makes a 20 lb bottle and you can even get a scuba tank. The plugs I think should be 2 heat ranges cooler than stock, it should say in the manual. I think the Zex management unit detects bottle pressure and should not do any damage if you run with it empty. And $400 would be a great price for a new kit.