Who is running dry shot nitrous? Curious about it

[CamP]

Originally Posted by 1991 Corvette ZR-1

Interesting, I would very much like to review that whole system. Wonder if Holley still has the PDF instructions or overview kicking around somewhere.

The NOS import kit is has a similar configuration as the old zr-1 kit, but without the zr-1 specific black box that triggers off the secondaries. The Z kit also had a inline fuel pump booster, but you wont need it at 75hp.

If you scroll down to "tech resources" you can download the installation instructions. The layout is on page 11.

https://www.holley.com/products/nitr...parts/05122NOS

[CamP]

Here's a dyno run from the NOS ZR-1 kit.

[1991 Corvette ZR-1]

Originally Posted by CamP

Here's a dyno run from the NOS ZR-1 kit.

Doesn?t look like the image wants to populate.

[CamP]

Must be a forum issue. The link shows up when you hit the quote button.

https://imgur.com/a/WPn0TVp

[1991 Corvette ZR-1]

Originally Posted by CamP

Must be a forum issue. The link shows up when you hit the quote button.

https://imgur.com/a/WPn0TVp

Very nice. Was that a stock LT5? Looks like I may be picking your brain on this as well in a while. I picked up a window switch.

https://nitrousoutlet.com/i-30559958...YaAmq_EALw_wcB

I have had good experience so far with their products, I figured I would stick with them for as many parts as possible. I like that the conditions of rpm and TPS signal both need to be met before the switch allows nitrous activation. And talk about a rabbit hole because now I am eyeing this

https://www.innovatemotorsports.com/products/psn1.php

I like that it also includes PSI readout for bottle pressure. And I THINK it is possible to make a discrepancy in AFR trigger a kill to the nitrous activation as well with this. I am going for overkill on safety measures. Comes with a bung to weld onto the headers for the wide band. I guess I will have to figure out the best placement. The OBX headers have the stock O2 on top versus the original manifold location. I think wiring the new window switch in along with the micro switch panel and various bits should keep me busy for a while.

A fool and his money are soon parted.

[CamP]

Originally Posted by 1991 Corvette ZR-1

Very nice. Was that a stock LT5? Looks like I may be picking your brain on this as well in a while. I picked up a window switch.

Yes, it was bone stock at that time. I'll do my best to help, even though it was 20 years ago.

If you clone that dry system from NOS, and use your window switch, I don't think you'll ever have an issue with a 75hp shot.

[1991 Corvette ZR-1]

This is where I ended up for the wiring so far. I will clean it up later. I liked the window switch?s compact size. Made it perfect for mounting in the tray as well. I terminated the wires into a Delphi connector and plan to leave enough slack in the wiring on the female plug side so the switch can be held from the driver seat for parameter set, or check and then put back.

[1991 Corvette ZR-1]

So I think I am in the neighborhood as far as the right wires to pull for tach rpm signal and TPS. The diagnostic plug F terminal has a white wire going to it that I can tap into thanks to this old thread dropped in the shift light thread.

http://www.zr1.net/forum/showthread....ighlight=shift

Big thanks to Jerry for the knowledge on that one. And sure enough, it matched up with the info in the 8A book. TPS throttle position input wire is dark blue and according to the diagram is in connector B in the number 3 spot. I remember connector A is yellow and you would think they would go in order. Anyone tapped into this wire before? It is the only dark blue wire in 3 on all the connections. I planned to tap into it a little further from the main bulk connector.

[CamP]

You're out of my element there

[1991 Corvette ZR-1]

Originally Posted by CamP

You're out of my element there

No worries, you have been a great help so far. I occupied myself with other things in the meantime. I redid the wiring and relay placement so it is a little neater. Crimped on a Delphi terminal to the tach wire going to the window switch so that it plugs into the factory diagnostic connector. I will need to figure out a 12 volt key on source easiest to tap into for the last wire on the window switch.