On Crank & Chrome last week, a LS1 Camaro SS was dynoed before and after a 150 shot of Nitrous. 290 @ the wheels and 442 w. nitrous. They were using a Nitous Express wet kit. Now...
Question 1: I was always told that a dry kit is safer but wont produce the numbers that a wet kit will?
Question 2: Is there a difference between a NOS & Nitrous Express Kit?
Question 3: What extra accessories should I purchase to "Do it Right"?
Thanks in Advance...

 

I don't know the answer to the questions, but to go along with it. What is the difference between a "dry" and "wet" setup?

 

People all have their own reasons for why they feel their WET or DRY kit is safer. It is always a great debate. All I can do is give you my own opinion as to which is safer.

Your biggest concern when running nitrous is that you are going to have the proper amount of fuel mixed with the Nitrous. If there is too little or no fuel mixed with the nitrous going into your engine, severe engine damage usually occurs.

A wet nitrous kit shoots pre-mixed fuel and nitrous into your engine and the fuel is taken directly from the fuel rail. A dry kit injects ONLY nitrous in and depends on your MAF sensor to detect the extra oxygen entering, and to then tell the computer to let your fuel injectors know to inject more fuel to go along with the nitrous.

The whole idea of depending on two thin wires (often known to fail) in the MAF to tell the computer to tell the fuel injectors to shoot in more fuel bothers me. This is the main reason I swear by a wet kit. A wet kit also does not add any extra stress to your fuel injectors like a dry kit does.

The down sides to a Wet Kit are, an extra solenoid to release the fuel,, and the possibility of puddling in the intake manifold, which does not seem common on an LS1. Also the LS1 nylon intake manifold was probably not designed to have fuel within it, but I have not heard of any problems caused by this.

No matter who you talk to you will get different opinions, and as long as they are educated, they are valid. Both systems have their good and bad points and you have to make the decisions for what is right for you.

NOS kits for the LS1 are only dry kits, and Nitrous Express kits are only wet kits for the LS1.

To have a complete nitrous system with all the safety and convenience devices, you will want a Bottle Warmer, RPM Swtich, Electronic Wide Open Throttle Switch, Purge Valve, Pressure Guage, Nitrous Filter, and a Remote Bottle Opener.

I hope this gets you started a bit in learning about Nitrous. It is a great mod, that offers incredible power per dollar gains but you must educate yourself about it before install.

If you have any further questions or are interested in pricing on anything, shoot me an email.




[Modified by MattG, 11:20 AM 8/27/2001]

 

Matt is 100% correct about the Nitrous.
You could put on a wet and a dry :D

 

Matt;
correction on your explanation. it's not your MAF sensor that senses the nitrous (or, rather, the oxygen in the N2O molecule), but the O2 sensors. since each bank of exhaust houses 2 O2 sensors, the system is really safer. it is the O2 sensors that continuously (every 20 milliseconds or so) updates the PCM's on lean/rich conditions. the knock sensor also aides in safe Nitrous application in that it will retard the timing sufficiently when the oxygen-rich atmosphere created by nitrous causes the burn to be real fast, thus needing a few degrees retard on the timing. the major benefit i see with a wet system is that it allows you to go a bit higher in HP jets sizes on the Nitrous system because you are getting extra fuel from the rail vs. being limited by the stock fuel injectors output ability. the only thing you need to be cautious of when doing bigger HP shot (say, 250 jets on a wet system) is being cognizant of fuel pressure. i dont think i'd trust the stock fuel injectors to support an additional 250 hp by itself (if using a dry system). i use a 250 hp jets on my NX system and never have had a problem. it is out of this world, too.!!

 

Actually I feel I am correct with my explanation because the 02 sensors are not involved whatsoever in Wide Open Throttle fuel decisions by the PCM. Therefore, the 02 sensors have nothing to do with making sure extra fuel is injected in with the Nitrous which only happens at WOT.

Also, the second set of 02 sensors you mention do nothing more than let the PCM know whether the catalytic converters are doing their job by lowering the 02 content of the exhaust.




[Modified by MattG, 8:37 AM 8/29/2001]

 

Matt is right on, as usual.

Matt, I spoke to Richard yesterday, and my order should be waiting for me at home today!!! I feel like a kid at Christmas.

 

Awesome!! I bet you can't wait to get spraying that beast! Let me know how it goes!

 

Matt,
Does it make more sense to hook up the WOT switch BEFORE the RPM window or AFTER? :crazy: :confused: Is it really necessary to have both or can I stick with just one of the devices? :chevy