i got a question bout the zex nitrous kit...is the zex purple box used as the solenoid? cause i got the purple box and a solenoid and i think the solenoid is for the purge. can anyone explain if i need another solenoid or is it in the purple box

 

the purple box is your nitrous solenoid and your fuel one too, if you have the wet kit. that extra solenoid is for a purge. you dont need it.

 

The extra one pushes nitrous on the FPR increasing the fuel pressure on the dry kit.

 

you should just have the purple box.

if you got another noid, its probably for the purge.