A window switch is a device that only allow the nitrous selonoids to activate with in a certin RPM "window" by using a tach reference. Meaning if you have it set from 2500 to 6000 like on my set up, then you can mash it at idle but will not spray untill 2500 rpm is reached. Similarly it will not spray if you rev past 6000. I see this as a critical device on 4.6 cars because of the composite intake manifold. If you accidentally miss a gear, and over rev while spraying, there is a high possibility for nitrous back fire, which can blow your intake to peices. I recommend the ZEX window switch because of ease of use and also has the ability to select which gear you want to start spraying in. VERY useful for when spraying on street tires.
It is activated by rpm only. If you hit the clutch but stay in the throttle it will keep spraying. I recommend a wet kit personally if you want to spray 100 shot. I have all zex stuff and i recommend it to anybody. less stuff to screw up. Look on ebay, i ordered from discountperformanceparts on ebay, good prices just watch them from a while cuz they fluctuate alittle bit.
would i have to upgrade thefuel pump, injectors, or anything else. and i will get a custom tune for the nitrouus or could i have one set to use the nitrous whenever i want
I have all stock fuel system running a 125 zex wet kit. You do need to have two seperate tunes for the nitrous and street. You can get away with backing off the timing and driving normally like that, but it will not run as well on the motor with timing pulled out of it. So you can run one tune if you want. If you go with a dry kit i would upgrade injectors because the dry relies completely on your stock injectors to deliever extra fuel.
I have all stock fuel system running a 125 zex wet kit. You do need to have two seperate tunes for the nitrous and street. You can get away with backing off the timing and driving normally like that, but it will not run as well on the motor with timing pulled out of it. So you can run one tune if you want. If you go with a dry kit i would upgrade injectors because the dry relies completely on your stock injectors to deliever extra fuel.
Dittos, but I'm running the NOS Noszle port injection setup with a 125HP shot. I run the stock tune.
Other than safety features (Innovate Motorsports Wideband, FPSS, Window Switch, electronic WOT switch), I run it in stock tune, with just a couple bolt ons...it's quite safe, with a pretty fat AFR while on the juice and it pulls like a proverbial freight train.
i have nx 100 wet. been running this for 2 years now with 0 problems. i use a wot switch and a msd digital window switch set at 3k on 5900 off. i also have a toggle switch to activate the whole system since i dont want to spray EVERY time i go wot over 3k. i am running the stock tune and have had no issues at all. just got two steps colder on ur spark plugs and ur good to go. i will be getting a tune soon but thats only b/c i need it after the cam install. i just jetted my kit to be slightly richer than normal to be certain i didnt go lean. it hits hard and pulls strong, knocked a full second off my 1/4 times and added 10 mph on street tires, spraying every gear.