George84

Ok, I am starting to look into putting a dry nitrous system on my car, no more then a 50hp shot. I want to run my stock injectors after being professionally cleaned. Can any one recommend a good link for N/A rotarys where I can research this further. I have only found little info on dry setups. any help is appreciated

WAYNE88N/A

I'm looking into this,too... so far the ZEX dry kits are the ones getting my attention...we need a good writeup on this subject from some of the nitrous gurus, I don't see much doin a search...

truespin88

Search for posts on the subject of nitrous by Scathcart.
He describes, in the detail, the theory and process. Good luck.

DEZERTE

www.fc3s.org also has some information i believe, under the "how to" section.

Rxmfn7

iTrader: (4)

Why are you so set on a dry kit?

WAYNE88N/A

according to the writeup by scathcart, if you're only looking for, say, a 50 shot, dry kits are o.k....but, that's why we're here- to grab knowledge from the guys who've used these systems...If you've got a wet system, discuss why you like it vs. the dry, etc...

scathcart

Don't use dry. Period.
Do you guys know how dry systems work? They run an FMU (Fuel management unit). Basically, this little guy just ups the fuel pressure whenever you engage the nitrous system.
They absolutley suck to try and tune, the increased fuel pressure decreases the flow rate from the fuel pump, and most FMU's are set for a higher AFR value than I like to have when tuning.

ZEX kits are the worst of the bunch, Venom about the best (for dry kits). I have seen more blown engines on ZEX than any other.

That being said, I whole-heartedly endorse wet kits for all applications.
They are upgradable to higher power levels, really easy to tune, keep pump flow constant at WOT, and work really well with the high intake velocities of a rotary.

Along with Ito, I am probably the most experienced nitrous tuner on this board, so trust me when I say NO DRY.

If you want more info on set-up and tuning, post here with some more information on your desires.

anobii

I agree, i'm used to doing nitrous on chevy small blocks and have seen soo many rings and exhaust vlaves kentucky fried from inadequate fuel flow. Wet is the way to go and worth the extra $$.

Scathcart, have you ever used NOS Nozzle's, im just wondering how well they work. Seems like a good way to hide the setup, especially on an fc since the injectors are hidden.

-E

George84

I have read Scathcart's writeup and he sure sounds like he knows nitrous. In the writeup it says its ok to use dry for up to a 50hp shot. But now he says "NO DRY". So Scathcart, what kit do you recommend for a smaller (50hp) shot, what would be the overall best on a S5 N/A? I don't think I will really ever want to upgrade to a bigger shot. Does a wet shot "backfire" more easily since its adding gas before the throttle body?

scathcart

I wrote that article over 2 years ago when I had only used nitrous for personal use. I have learned since then to accomodate everyone, and it is just easiest to say NO DRY instead of Dry Only under such and such conditions.

I have not personally experienced a nitrous backfire, or had any of my installs have it occur. So while a wet kit may be more likely to backfire, I doubt it is a strong possibility of it actually occurring. I have personally run hundreds of pounds, and those running under my tuning have gone through several dozen bottles, So it is not that much of a problem.

I would have thought that the risk of detonation with dry would far exceed the minute risk of nitrous backfire with wet.


I have not used the NOSzles... they seem a bit too much like gimmick for me. I am not really about products designed solely to look "stealth" or "so easy a legless cat could install it". I like my products for how well they function. A clean direct port install or single fogger install looks very pretty in itself, so I need not concern myself with the latest civic-owner inspired hype product.