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well the part # for the kit is 82021p and thats the wet kit in which you have to tap into your fuel system and no I dont have it installed yet, Im goin to Nopi in knox. this weekend to show my car and didnt wanna tear it down before hand, I just went today and got my friend that works at the local honda dealership to print me off where the throttle postioning sensor is and what wire to tap into on the si, and I have zero experience with Nos so I dunno if it may be more harmful putting it on the K-20 or not but I did alot of research about the different kinds of applications and kits and Zex claims it can be put on any engine safely if used correctly, the kit came with several different jets for different horsepower and I'm only gonna put the 65 shot jets in it which is considered to be "no danger" heres some of the things I read up on the zex kit:
The ZEX "Wet" Nitrous System has the most advanced features of any "Wet" nitrous system on the market. All components, such as the solenoids and activation electronics, are factory pre-assembled inside the "Nitrous Management Unit". This ensures you will be spending less time in the garage installing the system and more time out having fun. The patent pending "Fuel Shear" technology used in ZEX's nitrous nozzle places the enrichment fuel directly inside the high-speed nitrous plume exiting the nozzle. This results in the most complete atomization of enrichment fuel possible. Super-fine atomization of enrichment fuel ensures maximum horsepower and eliminates fuel puddling that can cause intake backfires. Even the way ZEX activates the nitrous system is unique. Instead of relying on crude micro-switches or push buttons, the ZEX "wet" nitrous system uses advanced electronics to "learn' the throttle position sensors voltage curve. It then programs itself for your specific vehicle and, when armed, will only activate the nitrous system at wide-open throttle. This ensures perfect engagement every time the nitrous system is used. Advanced features like this make the ZEX "wet" nitrous system the easiest to install, the most powerful, and the most reliable system on the market.
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Designed to work safely on stock type engines, but is also engineered to perform flawlessly on highly modified turbocharged and supercharged combinations. The ideal nitrous system for any fuel injected vehicle.
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All major components are factory pre-assembled inside the "Nitrous Management Unit". Easy, plug and play, two-hour installation.
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ZEX Nitrous Systems have an advanced, patented feature called "Active Fuel Control". This feature monitors nitrous bottle pressure and adds or subtracts enrichment fuel so the engine never runs too rich, or too lean, when you engage the nitrous system.
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ZEX "Wet" nitrous systems activate at wide-open throttle using advanced electronics that monitor your engine's throttle position sensor. This makes using your nitrous system very easy and reliable.
APPLICATIONS FOR THIS ITEM:
ACURA
CL 2.2, 2.3, 3.0, 3.2 1997-Current
Integra RS, LS, GS & GSR 1986-2001
NSX 1991-Current
RSX 2002-Current
CHEVROLET
Cavalier 1995-Current
CHRYSLER
Neon / SRT-4 1995-Current
Prowler 1997-2002
PT Cruiser 2001-Current
FORD
Escort 1999-2001
Focus 2000-Current
HONDA
Accord 4 cyl./ V6 1990-Current
CRX DX & SI 1988-1991
Civic HF, DX, LX, EX, CX & SI 1992-Current
Del Sol S, SI & DOHC VTEC 1993-1997
Prelude S, SI, SH, VTEC 1998-2001
And it lists the si as a suitable application so I hope it turns out alright, I'm not very hard on my engine either, I mostly granny it around and never run it above 5 geez, I ran it 4 passes at the track and that was the only 4 times its ever touched 8000, I usually shift at 7500 if I am gettin into it so I'm not gonna be using it much, mostly just wanted it to bring my quarter mile time down in the 13's for bragging rights, I just dont want my car smoking and looking ragged out by the time it has 30,000 miles on it.
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