zex or nx systems?  i have a dirt track stock car just wondering what the most popular brand is out there?  thinking about experimenting with it next year since a few cars are shooting already.  i got a good bottom/ top end so i think the ld9 should handle at least 100 shot. any help would be appreciated thanks
 
I would go with zex because everything is one box, now for spraying i wouldn't go that high unless the motor is built. If its not built you would have to pull timing and go with colder plugs.
 
NOS all the way--only thing we run
 
 
i have owned both and they are both good but i think I prefer the ZEX components over the NX. My ZEX is direct port though and does not use the all-in-one solenoid box. 

ASE Master Certified Automotive Technician 
 
 
I personally like the NX solenoids and for foggers either NX or NOS.I only like the ZEX because of the ease of the install,but all good brands.

15.2@89mph 2.171 60ft. 9.830 1/8 R.I.P. "LULU"