wiring zex dry kit to be activated by the outputs

pullig · Post by **pullig** » Fri Jan 02, 2009 4:23 pm

Ive been looking everywhere for directions on how to hook up the zex box. I can only find directions to hook up regular solenoids. So my question is how can i wire up to activate the box? It activates now on TPS voltage. Is there any outputs i could wire to that would output 5volts when active?

Post by **calvin** » Fri Jan 02, 2009 9:53 pm

you can hook it up that ectune controls it.. i have it like that

pullig · Post by **pullig** » Sat Jan 03, 2009 12:03 am

so i could hook up the output in ectune to PCS (purge valve) A20 to the tps input wire on the zex box and it will work fine? well to clarify what voltages do these outputs put out ? 0-5volt and inverted 5-0 volts?

Post by **Bugermass** » Sat Jan 03, 2009 2:58 am

due to the way that the zex kit works, I wouldn't recomend trying to use the eCtune outputs to control it, your better off wiring it normal, and just using dual maps, you can use a dual pole switch to active your secondary maps and turn on your zex box at the same time. but honestly, I'd sell the zex and get a standalone dry kit and let the ecu control it.

Post by **calvin** » Sun Jan 04, 2009 8:41 am

it's easy.. 2 relays... 1st relay that is wired to a GND swith turns power on to the zex box and give an INPUT on the ecu gnd that NOS/OUTPUT is active 2nd relay is used to send 5v to the zex box. You will have to program your zex box first. You will have to max it turn on by full TPS 4.xx V. When you send 5v with the relay it will turn on. 5v volt can be used from the 2nd before last pin on D connector(obd1)

pullig · Post by **pullig** » Sun Jan 04, 2009 3:55 pm

calvin wrote:it's easy.. 2 relays... 1st relay that is wired to a GND swith turns power on to the zex box and give an INPUT on the ecu gnd that NOS/OUTPUT is active 2nd relay is used to send 5v to the zex box. You will have to program your zex box first. You will have to max it turn on by full TPS 4.xx V. When you send 5v with the relay it will turn on. 5v volt can be used from the 2nd before last pin on D connector(obd1)

im not really following what you mean by using the relays.. Can you please make a very broken down explanation of exactly what to do i would greatly appreciate.. im just not understanding the relays

Post by **Bugermass** » Sun Jan 04, 2009 5:00 pm

calvin wrote:it's easy.. 2 relays... 1st relay that is wired to a GND swith turns power on to the zex box and give an INPUT on the ecu gnd that NOS/OUTPUT is active 2nd relay is used to send 5v to the zex box. You will have to program your zex box first. You will have to max it turn on by full TPS 4.xx V. When you send 5v with the relay it will turn on. 5v volt can be used from the 2nd before last pin on D connector(obd1)

Sorry I guess what I was trying to say is that due to the way the zex kit works, its a hassle to setup.. Better off trading somone for a simple dry kit.

pullig · Post by **pullig** » Thu Jan 15, 2009 10:09 pm

ok i need help i finally got ectune controlling my zex kit ... im having an issue with melting and destroying #2 SPARK PLUG... this has never happend ever since ive been spraying. Whats weird is that every spark plug was perfectly fine black ring tan strap no hint of detonation ... afrs looked rich here is my cal and log after melting the first plug i added 20% fuel to the whole secondary map low cam and high i bought new plug and same thing except this time melted strap and blew porcelain im using ngk bkr7 im spraying a 75 -80 hp shot about .043 jet nitrous jet

JaredKaragen · Post by **JaredKaragen** » Thu Jan 15, 2009 10:47 pm

check the jets; make sure they arent dirty/plugged.. (in that cylinder) I would want to say try it back as it was, to see if it happens again, but that would be an expensive potential failure to test... could it be injector related? I.E. clogged, etc... did your fuel increase change fuel pressure at all, thus taking away from overall AFR in the nitrous setup? I am assuming it's not direct port... so this could be ruled out too... somehow I just suspect the injector... it seems most logical. that's an odd thing to happen if your using a non-direct-port setup.... odd for the nitrous to be cusing this.

pullig · Post by **pullig** » Fri Jan 16, 2009 2:10 am

well its a dry kit .. and its got the zex box so when its active it increases the fuel pressure ... but i dont see how its injector its been running fine when i had it hooked up regular

JaredKaragen · Post by **JaredKaragen** » Fri Jan 16, 2009 2:44 am

yeah, but there is really no cause for one cylinder to be messed up; since all fuel is coming from that injector; it has to be one of 3 things: vac leak; injector problem, or uneven ratio of nitrous entering that cylinder.