Should I run NOS?

[MacG183]

I was wondering if anyone out there runs NOS on their E30? If so, any problems? I really want some more juice but if it means excessive damage forget it. Pics of my baby will be up soon!

[87Nitro325ic]

I have had the BAVAUTO kit on my car for about 19 months now and it is great. Nothing gives you more bang for the buck. Installation is easy. I guess I've gone through about 13 or 14 refills(10lb bottle)and there has been no damage. This was confirmed by the mechanic that did my cam install about 5000 miles ago. I put the kit when the car had 86000 miles and now it has 121000.The kit i use is a wet kit and is WOT activated so there is really no way of F***ing up. Just make sure your above 3500 rpm. I have mine set at 75 hp because my worn clutch could not take 95hp.

87 325ic lots of mods
Check my profile in BEN

*Bavauto is coming out with a new kit in a couple of weeks*

[Eric]

what about for an M3? i've ben contemplating this for some time. could i just get a universal kit? I've also heard that you cannot run chips since they advance your timming, what did you do to have the timming retartded when the NOS kickes in?

and what are you doing getting a bigger cam, when you have worn clutch?

[EVOIIIM3]

Make sure you get a "wet" system. They are really good for adding power. But there can be problems. Some can make you run lean and burn a piston or valve.

Eric, I have seen a few kits on S14 engines. They WORK, but make sure it does not run lean or wet down the cylinder walls to much. If it does the piston rings will score the cylinder walls, and reallly mess thigs up. I have seen this!

[87Nitro325ic]

Eric ...the Bavauto kit can be used on any BMW because the NOS and FUEL is mixed before being introduced to the intake. Proper ratio is maintained as long as there is enough fuel pressure hence.... spray over 3500 rpm.Below that you do run risk of damage but solenoids will cut out if the pressure goes to low.

Why the bigger cam? I had bought a new bare head but used all the old internals back in January. Well a rocker arm broke in June which was no suprise to me. After all the internals had over 116000 miles. So I replaced everything new shafts,valves,rockers, and bought BMP HD valve springs and their 282/272 cam. I was just taking advantage of the opportunity.
Regarding the clutch.One should expect for the stock clutch to slip if I'm running an extra 95hp...the 75hp grips just right even though I myself have put 42000 miles on it.Who knows when and if it was replaced.The previous owner is now deceased so i can't ask. I'm just waiting for my student loan to come in Jan so I can upgrade the clutch.

One quick question. How do you guys post pictures,faces and links here. I can't figure i out.Well I haven't really tried.

[Eric]

ok let me get this straight. the "dry" system is where they plumb a line into your intake tubing right after the AFM right? and a "wet" system is where the NOS goes directly into your cylinder?

i thought using the dry system was safer than the wet system, am i wrong? and what do you guys do about the timming issue?

hmmm i'm really starting to think about doing this

[MacG183]

Can NOS be used with a chip? I have DINAN. Thanks for the advice everyone.

[87Nitro325ic]

A dry kit is where only NOS is injected either into the throtle body or throtttle bodies in an M3 or into each individual manifold tube by tapping the manifold. This is more precise but more dangerous since it depends on your ECU to recognize that your running lean(briefly) and then it signals to the injectors to richen the mixture. On M20 this is a bad thing because stock injectors can not flow much fuel.Not sure about M3.
The wet kit mixes the NOS and fuel before injection therefore ensuring proper mixture.The fuel line is tapped for the mixture. It has a solenoid for NOS and one for fuel so proper pressure always maintained.

I left my chip in and have NOT experienced any detonation. I only run 93 octane so that helps prevent detonation.

This guy has the same kit but set @ 70hp. This is how mine is setup.I don't know how to post links on here Sorry.

http://photos.yahoo.com/bc/sylfiset/....jpg%26.src=ph

[EVOIIIM3]

One thing to remember about have NOS in your car.
You are carring a BOMB in the trunk! They can explode, I have seen this on a Honda, blew a hole out the side of his house to!

If you get rear ended it can blow up, I don't feel safe with something like that in my car.

Plus, you have to go and get it filled up all the time. What does it cost for a 10lbs bottle? How many runs do you get with it at 75hp?

[87Nitro325ic]

The bottle will NOT explode unless they tampered with or removed the safety valve. If too much pressure builds up from forcing more than the max amount into a bottle or heat expansion the safety valve releases it till the pressure is within specs. The max a 10 lb bottle can be filled with is 12 lbs and remain stable till about 70 degrees. Then the valve releases the excess. Just like aircompressors or airtanks used to refill tires.
Some people mess with the valve to have a larger threshold and sometimes it just won't open(because its tampered) so the tank blows. I have also seen this but it was when someone left a malfuncioning bottlewarmer on all night and it blew the back of a civic out. The trunklid was halfway through the garage door! It was a Pressure explosion. Still not good but no Flames or anything like that. NOS by itself is not flammable! Don't believe me check out the Q&A from NOS http://www.nosnitrous.com/HiOctn/Pro...echcorner.html

I get about 20 passes from standstill till i let up in 4th 120+
The cost of refilling is a bit $35 or 3.5 a lb here in San Antonio.
Thats why I only use it against car I know I can't take on with raw power.

[Eric]

ok i'm still a bit confused about the different types of setups

tell me if this is right

Fogger system... you drill a hole in the rubber boot that is located in between the AFM and the throttle body, or air plenum for M3's. this is the safest right?

Dry system... drill holes in the air manifold, or trumpets for M3's. this is more direct since there are four or six ports with nitrous going through them instead of just one like the fogger setup. this is the one that momentarily causes your engine to lean out? timming need to be retarded on this one?

Wet system... both your fuel and nitrous enter the cylender at the same time. i don't know much about this system.

which one is the best for like a 50hp to a 75hp increase? i'm thinking of doing the fogger system since it is mounted the furthest from the cylinder and will cool the air more than give the engine a burst in O2.

also which one is the safest? for the engine i mean.

[Neil M]

I have seen that picture of the exploded Honda. Everyone was slagging NOS off after that, but no one bothered to read the story. He had a Faulty safety vavle, which caused it to explode.

If you speak to anyone who has used NOS, for any period of time, they will tell you it is safe. Trev at NOS wizzards, has even spoken to the Fire Brigade about this.

I'm still saving for my Kit. Its £500 in the UK

Neil

[87Nitro325ic]

Let me try to summarize once again.


Fogger Kit:The MOST precise & powerful(stressful) kit you can get.You tap(drill)into your intake manifold.One nozzle for each tract.One fuel&one NOS solenoid for each nozzle. Fuel& NOS is injected simutaneusly.(No leaning)Expected power 250hp+ for 4 cyl 500hp+ for v-8. This is way too extreme for our engines even if reinforced. So don't bother.Also cost is at least $1000+.Think of it as a really advanced wet kit.

Dry Kit: This kit only sprays NOS into either the throttle body(throttle bodies for M3) or for more precision it can be installed by tapping the intake manifold with one nozzle for each intake tube. Ex: 6 cyl has six nozzle.4 has 4 nozzles. This relies on your ECU to richen the mixture (brief leaning). The drawback: our stock fuel systems can not support these. Always run the risk of leaning...clogged injector,fuel filter,faulty ECU, etc.

Wet Kit: Mixes both Fuel & NOS prior to being introduced ensuring a perfect mixture.It has one solenoid for fuel and one for NOS to ensure proper pressure/mixture.So it runs independent of everything else in your car. This can be installed many different ways the most common is like this
http://photos.yahoo.com/bc/sylfiset...s.jpg%26.src=ph
That is exactly the way mine is set up. For M3 their would be one nozzle for each throttle body. So what you see times 4 for e30 M3.Times 6 for e46 M3 or e36 M3 euro.
The other way to set it up is to tap the intake manifold and again one for each tract.This is more precise than in front of the throttle body but you get less of a cooling effect and of course you have to buy a new manifold to return the car to stock.

Some KEY Tips: Tapping the manifold will always be more precise.
Spraying into the throttle body is easier less complex.
Start at lower hp settings then go up.
DO NOT inhale this NOS! WILL NOT GET YOU HIGH! WILL CAUSE YOU TO GAG. IF YOU PERSIST YOU WILL DIE. A little will not hurt.

ERIC just go with a wet kit...they are adjustable.Most are good for up to 150 hp.Mine is.
There is no leaning and safest of WET VS DRY technology. For really advanced kits look into ZEX or VENOM. Lots of money though.

Once again visit this for NOS's Q&A http://www.nosnitrous.com/HiOctn/Pro...echcorner.html
Nitrous Express Q&A http://www.nitrousexpress.com/q&a.htm


For better more advanced kits than NOS or BAVAUTO look into www.ZEX.com or www.venom-performance.com or www.nitrousexpress.com

[jmciver]

87Nitro325ic,

It is good to hear that you have not had any problems with your chip and nitrous. I was considering nitrous a while back but stopped because I did not want to give up my chip (since you only use nitrous maybe 5% of the time). I agree with you though on the wet kit, especially if you have a chip. Between the ECU compensating for knock (detonation) and the extra fuel from the wet kit, a lean conditon should not. One question though, did you go with colder spark plugs as well? Also, did you use a "rev window" switch to make sure the juice is not flowing at low rpms or the rev limiter? And one last question, did you consider using an air/fuel meter? I am considering getting an air/fuel meter to ensure I am rich while at WOT with the nitrous flowing. BTW, I know I have an E36 but this is the only place I found a good discussion on this topic)

[EVOIIIM3]

Originally posted by jmciver
87Nitro325ic,It is good to hear that you have not had any problems with your chip and nitrous. I was considering nitrous a while back but stopped because I did not want to give up my chip (since you only use nitrous maybe 5% of the time). I agree with you though on the wet kit, especially if you have a chip. Between the ECU compensating for knock (detonation) and the extra fuel from the wet kit, a lean conditon should not. One question though, did you go with colder spark plugs as well? Also, did you use a "rev window" switch to make sure the juice is not flowing at low rpms or the rev limiter? And one last question, did you consider using an air/fuel meter? I am considering getting an air/fuel meter to ensure I am rich while at WOT with the nitrous flowing. BTW, I know I have an E36 but this is the only place I found a good discussion on this topic)

The M20 does not have any "knock" sensors. A chip usally richens the fuel mixture and timing.