Burrhos

iTrader: (3)

Hey LS1tech,
My name is Justin and I have an LS3 cam-only vette that I race on the regular and I wanted to try my hand at adding nitrous to my car.

I went with the NX 90mm plate kit, purge, progressive controller, fpss,etc

Here are some pics from the install. The main nitrous feed line is way too long so I'll be cutting off the excess and adding the fitting so it isn't so messy.

Comments, critiques, and thoughts are welcome. Thanks!

All the goodies(almost)


Initial solenoid placement but it was way too busy. I ended up ordering custom lines to clean up the install and mount the noids together.


The fuel line is still 1" too long so I have another line on the way to clean up the lines running from the noids to the plate.








Fuel rail tap and FPSS


Bottle mounted to pressboard, sandwiched in between the insulation and rear carpet






Nitrous Outlet switch panel wiring








Tapped into the VSS, tach signal, and TPS wires at the ecu so I didn't have to run wires everywhere in the engine bay






Nitrous feed, battery positive(1 gauge), wideband, timing box, and all nitrous wiring go through these holes in the firewall.




There are essentially 2 tunes loaded in the car and they change at the flip of this switch, thanks to resistors used to set the ECT to exactly 237* which allows a whole new timing map to be written


I also relocated the battery to the rear hatch compartment in preparation for the standalone fuel cell to take its place up front






HP Tuners interface, NGK AFX wideband controller, and Maximizer 4 progressive controller all secured in the glove box.


I didn't want to have to fuss with filling the bottle so I bought a mama bottle for the garage




Lastly, I ordered a new custom plate

TransAmcoupe98

iTrader: (10)

Haha clean setup brother looks damn good and tasteful. You aint fooling anybody pulling the curtain over the bottle Nice setup bro!

TransAmcoupe98

iTrader: (10)

Also, how big of a shot are you planning on? From your setup and supporting mods, I would anticipate a 200+

Burrhos

iTrader: (3)

Haha, thanks man. I'm not trying to fool anyone. I just laugh at the idea of "peek a boo" coming from the hatch

Burrhos

iTrader: (3)

I have baby pills in it right now(75 shot) as I don't think my stock fuel pump will take much more. I could add a bigger fuel pump or twins in the tank or something, but it's such a chore to do that on the vettes that I'd rather just buy a standalone and put it in the battery tray. The solenoids are located nice and close so I won't need to run excess fuel lines all over the place. It'll still be nice and clean.

The end goal is a 9 sec slip which I think is doable with a 150 shot

Burrhos

iTrader: (3)

It pulls surprisingly well with the 75 shot too. It almost feels like the vtec in my wifes Honda Civic. ROFL

Burrhos

iTrader: (3)

It has a slight lean spike on the hit(don't know what I can do about that though) and within .15, the fueling is back to .85 lambda just like I command.

TransAmcoupe98

iTrader: (10)

Whose solenoid brackets did you use?

Burrhos

iTrader: (3)

That's actually NX's solenoid bracket. I had some issues along the way with their packaging(they forgot to send the universal brackets) so they offered to ship me that bracket free of charge. It was designed to mount to the throttle body but with the purge, there's not enough room. You also have to relocate the power steering reservoir and I didn't want to do that. Ironically enough, that bracket fits PERFECTLY on top of the coil and is so snug, I didn't even have to bolt it down. I just ran a couple zip ties through the opposite side and it doesn't move.

4U2NV-SS

iTrader: (21)

I like to know more about the:

There are essentially 2 tunes loaded in the car and they change at the flip of this switch, thanks to resistors used to set the ECT to exactly 237* which allows a whole new timing map to be written

part??! any write up or info on 'how to' would be great.

Thanks

4U2NV-SS

iTrader: (21)

Sorry and looks good by the way!!!

NitrousExpress

iTrader: (4)

Nice install Justin I'm glad that you enjoy it. If you need any help with anything please feel free to ask .

Trey

Burrhos

iTrader: (3)

It essentially functions the same as an IAT tricker, only it uses the ECT as the sensor to fool. I have a visual cue that the timing is pulled as the ECT gauge goes to 237* and also shows the read out on the DIC. The 'second' tune is a modification to the ECT timing table and the timing is pulled when the computer sees the temperature at the specified range.

Thanks Trey, give Abney the link as he wanted to see pictures of the install. I'm still not done with it, but it's pretty close.

gator's 99TA

iTrader: (2)

well, looks like someone else wont be getting the against me!

TransAmcoupe98

iTrader: (10)

Where at in Tampa are you Gator?

Burrhos

iTrader: (3)

Getting the what against you?


Gator lives kind of close to me I believe

garrettmoore

Very clean install, nicely done.

You should secure that bottle in the garage to the wall, though.

Burrhos

iTrader: (3)

Thanks. Secure it how though, like a band clamp secured to the wall? My garage never sees above 95* and the supplier assured me the bottle is perfectly fine until sustained 120* heat. . . lol its not a bad idea though, I'll check into it.

Fbodyjunkie06

iTrader: (10)

The one thing I really like about NX kits is that they come with the -6 line and fittings already as part of the base package where as N2O outlet does not. I also really like their DF5 bottle valve it seems to really flow a lot more than others.

I am pretty sure with that maximizer 4 you can delay the nitrous .10-.15 to get rid of the lean spike.

Does it lose performance when the lean spike happens? Most of the time a lean spike is normal and it really won't hurt anything as long as the timing is pulled when it occurs.

Burrhos

iTrader: (3)

With the max 4, I can ramp in the shot, but I don't see an option to separately control the nitrous solenoid. I haven't experimented with it yet so maybe putting a slight ramp in the curve on the hit will help. It's only for about .15 of a second and the timing is pulled so I think it will be ok. I might call NX today to see if I'm just missing something as far as using the software to delay the nitrous noid.

No performance is lost that I can tell. It's a very small shot as I'm taking baby steps to get used to everything.