February 03, 2015
The plate system is the way to go since it's right there at the throttle body and you don't have to drill into your intake like the other systems require. I will state at the top of this review that I had to buy more 18 gauge wire (I bought pure copper speaker wire), an "Add-a-circuit" connector, 1 splice connector, and the pressure gauge that screws directly into the bottle cap. I have to take off at least 1 star for the instructions.
The install was a bit of a rough experience for me, the instructions were 9 pages long I believe, but there's only one problem, the instructions are not vehicle specific. So you basically get a long instruction packet telling you what to do, just not how to do it.
The first problem I ran into was where to put the master switch and how to power it. I thought it might be easiest to just use a splice connector to tap into the accessory plug in the middle console, but the instructions state that it can not be an "always on" power source, meaning that it still receives power even when the ignition is off. I called Nitrous Express to verify this, and they said the same thing, that an "always on" power source can cause complications. So after a little bit of asking around, the best way to get an "ignition only" power source is through the fuse box under the passenger side dash. You will need to buy an "ADD-A-CIRCUIT" connector from your local auto store which allows you to connect a wire from the fuse box going to the master switch. After messing around with different fuses, the choice that worked for me was fuse number "F33" , which if you look at a fuse diagram online you can see which one that is. Just a heads up, you have to disconnect the negative terminal on the battery first, then plug in the "Add-a-circuit" with the 10 Amp fuse in slot B on the connector (look at the "Add-a-circuit" instructions to see which slot that is), then reconnect the negative terminal again to receive power. I chose fuse number F33 because its not used by anything else to prevent complications. You know you've got the power working when you turn the key to ignition, then flip on the master switch and then the green LED turns on.
I put my master switch in the middle console, next to where the audio input jack is. Just plop off that little panel that's in there, or drill into that panel to stick the master switch into it for a professional look. To do the wiring you have to remove the center console completely, which is really easy, just look at the quick video on Youtube on how to do that. After that is out of the way you can route your wire under the stereo from the fuse box. Now that you have power, you have to run another 18 gauge wire from the master switch to the engine bay. I taped the wire to a skinny extension and pushed it through a rubber grommet that was to the left of the clutch pedal that led into the engine bay. There are probably much better locations, it was just the easiest for me to find. That wire connects to the red wire on the TPS sensor by the way.
So the next problem I had was finding a location for the TPS sensor and the Master relay switch. On the passenger side, if you look right next to where the tower brace mounts, you'll see grounding wires with bolts holding them in. This is where I put the Master Relay, since it needed to be connected to the battery and the nitrous plate. Everything reaches nicely there. And since its a grounding point, you can also use it to ground both the relay and TPS sensor. Just use the same bolt to hold everything in. Right now I have the TPS sensor just lying behind the fuse box until I find a nice place to mount it to in that area.
So another thing I was confused about was how to connect the TPS sensor to the throttle body, because there was no included splice connector. I called Nitrous Express again and they said that they recommend soldering the wire to the throttle body, because some people have had problems with the splice connectors. I didn't have soldering equipment so I ended up using a splice connector anyways, and so far I have had zero problems.
Everything from there was a cleaner process, I routed the nitrous line next to the fuel line, and then drilled a hole into the trunk where the spare tire goes. I hope this review helps others out, it would have been nice to have for myself. I know it seems like a lot of work but it really isn't, it's all worth it. I used a Bama for a 100 shot tune and everything works great. All in all, a good kit and I love having power on demand.
And of course, there's nothing better than smoking the new Corvette Stingrays.