The WOT switch whats the deal wit like people putting it by the gas peddle is that the only way???

That is ussually the easiest way to do it.

The reason that you allways see them behind the pedal is our cars dont have a cable between the pedal and the TB, so no weres else to put it.

Only place to put it. OR use a TPS switch to mimic it.

sorry gus, but what the heck is WOT

sorry gus, but what the heck is WOT


Wide Open Throttle.


grrrrr can't wait for my kit to be in.....its killing me just seeing it sit there lol :lol:

now will the WOT work perfect under the pedal and is it visible... how are the TPS

now will the WOT work perfect under the pedal and is it visible... how are the TPS

From what i've heard and read....Yes it will. Just need to mess around with the mounting. And I guess depending on the install it may or not be visible. Its kinda hidden behind and to the side of the pedal.

so what exactly does the wot switch do that the gas pedal doesn't, or rather how does it work? how expensive, how effective so on and so forth .

edit: just did a search something for the nos guys

TPS = 3000x better

how to install the tps ??

Need info now,response on demand make me happy

Yeah im curious on this TPS too. How does it work exactly?

TPS = 3000x better

agreed, especially with our setups

basically with the WOT switch you mount it under your pedal and when you push the pedal down to the floor it pushes the lever in which activates the nitrous. i personally don't want some switch sitting under the pedal, thats a little ghetto IMO.

BUT for the older ecotecs with the throttle cable its perfect since they can mount it on the TB...

otherwise I'd go TPS

agreed, especially with our setups

basically with the WOT switch you mount it under your pedal and when you push the pedal down to the floor it pushes the lever in which activates the nitrous. i personally don't want some switch sitting under the pedal, thats a little ghetto IMO.

BUT for the older ecotecs with the throttle cable its perfect since they can mount it on the TB...

otherwise I'd go TPS


so how does the tps switch work?? Does it only work if you have a throttle cable? can someone please explain lol im lost.


I did an edit...but is the TPS switch also known as a window switch?? Just curious.

on the Zex kit the TPS is built in, its basically one wire that runs to the throttle position sensor on your TB and it can read your voltage to tell when you are wide open throttle. the TPS switch can work on any car with a TPS. Since we are throttle by wire I think its better to go with the TPS.

Just think of the WOT switch detecting your throttle position manually and the TPS switch detecting your throttle position electronically.

a window switch (which I fuckin hate btw) will activate/deactivate the nitrous at a certain rpm. for instance you can set the window switch to activate the nitrous at 3000RPM and then cut the nitrous off at 6300RPM. So basically it gives you a window in which the nitrous is on.

So if you have a TPS switch AND an MSD window switch, the nitrous will come on when you are WOT and at 3K RPM and then shut off at 6300RPM.

Get it? Its not hard to understand but wiring it up together...I can't comment on that.

on the Zex kit the TPS is built in, its basically one wire that runs to the throttle position sensor on your TB and it can read your voltage to tell when you are wide open throttle. the TPS switch can work on any car with a TPS. Since we are throttle by wire I think its better to go with the TPS.

Just think of the WOT switch detecting your throttle position manually and the TPS switch detecting your throttle position electronically.

a window switch (which I fuckin hate btw) will activate/deactivate the nitrous at a certain rpm. for instance you can set the window switch to activate the nitrous at 3000RPM and then cut the nitrous off at 6300RPM. So basically it gives you a window in which the nitrous is on.

So if you have a TPS switch AND an MSD window switch, the nitrous will come on when you are WOT and at 3K RPM and then shut off at 6300RPM.

Get it? Its not hard to understand but wiring it up together...I can't comment on that.


Ohhhhh ok that makes sense.....So it would make more sense for us to use teh TPS because we have a drive by wire throttle. Or is it easier to run the WOT switch with the window switch? lol cause i read your post lol and yeah sounds like you had a fun time hahaha. Thanks for the help though :guns:

well with the TPS switch the only thing you have to do is tap into the TPS on the throttle body

with the WOT switch you have to figure out how to mount the switch under the pedal, could be a pain in the ass but its really up to you.

with our setups I'd go TPS...

Ohh ok. So now I have more questions lol.

What brand do you recommend when getting a TPS? I already have my kit from dynotune if thats a factor....And how do you tap into the TPS on the tb? I guess what color wires would be a better question.

TPS = 3000x better

I had a WOT switch under my pedal for months and it worked fine.

Ohh ok. So now I have more questions lol.

What brand do you recommend when getting a TPS? I already have my kit from dynotune if thats a factor....And how do you tap into the TPS on the tb? I guess what color wires would be a better question.
I would look into this for a TPS switch, its by NX
http://www.nitrousexpress.com/Pages/TPS.htm

although my kit is a little more simple than yours wiring wise, I just had to tap into the TPS wire (solid purple) on the TB and program my NMU to get it to work. but as you can see u have a little more wires to work with there, if u take a look at the installation instructions you should be able to find out what they're for.

its that easy?? haha. would the switch need to be prgrammed somehow? Or does it automatically work?

there is a button that you press on the switch that puts it into program mode then you probably just push the pedal to the floor for 10 sec or so.

Oh.....that sounds sooo simple. A little too simple. lol. Sounds good. Looks like i know what ill be ordering. haha Also, about how many hours would you say it took you to set up your whole system? Minus the window switch problem you had. haha :-P

hmmm, about 4 weeks :lol:

I would say give yourself a full day to work on it if you're going to be installing the kit + any accessories...and make sure you have everything you need before you start, that will definitely cut down on time. If you start early in the morning you should be done by 5-6 or so assuming theres no hold ups. If its your first time like it was mine then yeah definitely give yourself a full day.

It didn't take long at all to install all of what I have its just missing parts + wiring issues + only being able to work on my car for small amounts of time that lengthened my install.

just a little quick dumb question : i considered getting nitrous but i am terribly scared of messing somethin up, so would it be possible to get WOT swith and TPS switch running together so the kit would go only when both are in optimal conditions ? ( along with a window switch )

I would think that would be a waste....I only say that cause they both are made for when the Throttle is Wide Open. From the sounds of it your best bet for use on optimal conditions is the TPS. It seems more accurate. Seems like the WOT switch is kind of a guessing game in away.

anyone personally install the TPS and maybe please a picture of it... thanks mike

The WOT isnt a guessing game. Its a 0 or a 1. Its just a physical switch, that when the throttle lever or the pedal push it, it completes the switch. Both the TPS and the WOT switch work perfectly well, they just do it differently. THe WOT switch is much cheaper too i think.

Installation of a tps isnt hard, just splice into the tps signal, and hook it up into the circuit youre building with the nitrous stuff.

WOT switch is even easier. Just mount it where it will be pressed at WOT.

Getting a TPS and WOT switch is possible, but redundant and not worth it really. Its more complicating things than making it helpful. A single WOT switch and window switch suffices for safety.

Ive come to find that its much easier to think of the nitrous electronics as a circuit, then you can visualize how all the switches come together to trigger the nitrous.

Took me about 2 weeks to install it, doing it on the weekends while going to school and working.

any pics of either WOT or TPS

So just to follow up before I order anything.....With that NX TPS switch you posted earlier work with the Dynoetune kit? Not sure if you can mix and match.

I"ll be installing the ZEX 8120 kit this weekend,,, has the FMU with the TPS switch I'll take and post up pics saturday or sunday... I don't see this taking more than 3 hours to install and I have all the accessories minus the remote bottle opener ... so I'll post up on installing all parts

I"ll be installing the ZEX 8120 kit this weekend,,, has the FMU with the TPS switch I'll take and post up pics saturday or sunday... I don't see this taking more than 3 hours to install and I have all the accessories minus the remote bottle opener ... so I'll post up on installing all parts

and post up a wiring schematic when you're done since thats the same setup I have... :lol:

oh and ORT yes its okay to mix and match, they all do the same thing they just have differen't names branded on them. if u have a dynotune kit then they should have TPS switches on dynotunenitrous.com...just get one from there.

yeah will do... only thing my window switch (ZEX) won;t be in till next week, but I"ll have everything else hooked up and tested saturday if the weather clears of course..

oh and ORT yes its okay to mix and match, they all do the same thing they just have differen't names branded on them. if u have a dynotune kit then they should have TPS switches on dynotunenitrous.com...just get one from there.

Ohhh ok. I went ahead and ordered the MSD switch anyways. I like that you have a little more adjustability with a window switch then a TPS. So now I just need to install the whole kit and I should be gold :cssNET:


And 06blackg85ss definatly post those pics up when you get the chance. :twothumbs

Also, does any one have 1/4 mile times on a 2.2 running atleast a 50 shot?

does your kit come with a TPS switch already? i was actually looking at dynotunenitrous.com and they have a window switch that acts as a TPS switch as well.

you still need the TPS switch if you just wanna flip the switch and go vs having to play with the throttle and arming switch.

the ZEX 8120 kit has the TPS switch built in... I'm adding on a window switch (ZEX) for safety and the skip shift feature so I dont spray in first gear.... ($125 on e-bay from atlantic speed)..
plus witt the bottle warmer... pressure guages and the dual purge kit... should strike fear in the hearts of many around here... should be all done tomorrow or saturday.. and pics will be posted...

Yeah i didn't get that from dyno tune. I got the MSD window switch. So what your saying is i will have to have the car at WOT to activate the window switch then arm the nitrous?

the ZEX 8120 kit has the TPS switch built in... I'm adding on a window switch (ZEX) for safety and the skip shift feature so I dont spray in first gear.... ($125 on e-bay from atlantic speed)..
plus witt the bottle warmer... pressure guages and the dual purge kit... should strike fear in the hearts of many around here... should be all done tomorrow or saturday.. and pics will be posted...
yeah I saw that zex window switch on ebay, I was thinking about getting it and getting rid of my MSD but I'll only do that if I'm still gettin troubles with the MSD.

oh and ORT, your kit doesn't come with a TPS switch right? i've actually never thought of the need for a TPS or WOT switch if you have a window switch. i guess it would be possible to spray in that rpm range without being WOT, what kind of effects would that have?

to just be able to flip the arming switch and go I'm thinkin you need the TPS switch as well as the window switch.

best not to spray when not at WOT different fuel maps and such... probably lean out and go boom

I don't have a tps switch I just have the little switch that gets mounted under the gas pedle. So when thats activated it should then spray the nitrous when the gas is floored right as long as its in the settings of the window switch? lol does that make sense?

yup...........

I don't have a tps switch I just have the little switch that gets mounted under the gas pedle. So when thats activated it should then spray the nitrous when the gas is floored right as long as its in the settings of the window switch? lol does that make sense?
oh ok so you have a WOT switch and a window switch, gotcha

so you're all good to go then :twothumbs

oh ok so you have a WOT switch and a window switch, gotcha

so you're all good to go then :twothumbs


ahhh ok yeah lol i feel like i just confused the hell out of everyone :lol:

lol sorry been a long week. thanks for the help though :cssNET:

also....still no 1/4 mile times with a sprayed 2.2? Come onnnn there has to be lol.

im running a dynotune TPS switch, well i was till it started on fire out of the blue :( i now have a red button :) im definately not a nitrous newb and i hate having it on a button, but i know not to spray under 3000 rpm, and when im not floored :) i need to get another TPS switch on it! the dynotune was nice, but i have no clue why it started on fire, it worked fine for the 1st few days then we smelt smoke. theres a tps switch out there that wont spray through 1st gear and engages in 2nd, a buddy of mine has it in his 05 GTO, he said you set it to pass a certain rpm, after it passes that RPM once it arms the solinoids. spraying through 1st sux!

yesh thats a window switch with gear skip...
i have the ZEX one

I love spraying through first.

yesh thats a window switch with gear skip...
i have the ZEX one
did u get your setup installed yet? i'm considering ordering the Zex switch...

I looked on the Zex website though and their install instructions blow ass.

haven't had the chance had to fix my intake manifold first... should be in this week though..
also started building my other motor so I"ve been a little backed up.. but I did get the bottle filled yesterday just to motivate me some more.. expect some pics and install instructions during the week, just trying to figure out where to mount everything today

cool, I was looking over the zex instructions again today for that switch

I'm assuming power goes to the relay
green to tach signal
ground to ground
now with the two white wires i know one goes to the relay which I assume will activate the NMU
so that leaves one left over white one...don't know where that goes...TPS on the NMU? but then u'd have to have a wire go from that to the TPS on the TB.

hmm...

you don't use a relay if you use their tps setup.... that white wire on the window switch cuts it on and off per gear

seriously? if thats the case then I might have to get that.

so then connecting those without a relay I'm assuming that one white one goes to the TPS on the NMU, the other white goes to the TPS on the car, green to tach signal and then the NMU & window switch will have their own power and ground sources?

:edit: i see that in their instructions the window switch can't handle the load that the NMU produces so how does that work?

yup.. thats the way I read it... I should have most of the wiring done monday or tuesday I'l be doing it on my lunch break at work....
the white wire is for a 5 volt switch which is what our tps voltage should be all that does it cut the signal to the NMU has nothing to do with powering it...