nitrous anyone

[cjperformance]

curious on how much nitrous the 4.2L can handle. Got a kit laying around

[hot2trots4]

curious on how much nitrous the 4.2L can handle. Got a kit laying around

Sounds like you just volunteered to find out.

Subscribing.

Seriously though. Put some colder plugs in and start with 50hp and slowly go up from there. I would also get a vag com and do logging and watch the correction factors and 02 sensor readings.

Dry kit or wet kit?? Where do you plan on injecting it?

[Justincredible]

From what I have seen the 2.7T and the 1.8T guys can run 100shot I have seen more 1.8 guys running 75 shot all day long with no issues.
There was also a fellow on here some time ago that was running a 100 shot. Never heard that he had an issue

[jaybquick@JHM]

I am curious about this as well.

The big key would be where you inject it and adding fuel properly.

I wouldn't recommend a dry kit over 75 hp due to the long runners and lack of equal distribution it has and possible puddling from the long intake runners. Just spraying nitrous in the intake tract with a low cost dry shot can be dangerous if not done carefully or in moderation.

I would make a full fogger system if I were you and inject both nitrous and fuel into each runner near the injector for even distribution. The fun part is getting the jetting right. And hot2trot is right about logging. Learn to collect data from your computer first so you can keep it safe.

Honestly I don't see why 150 to 250hp wouldn't be possible with a nice fogger system and maybe even a progressive controller to soften the hit.

Good luck if you do it.

[cjperformance]

i think im going to look into the direct port idea on this one.
Gonna have to return to my old forumn guys for advise on this subject
ls1tech.com
i'll let you know what i come up with

[jaybquick@JHM]

i think im going to look into the direct port idea on this one.
Gonna have to return to my old forumn guys for advise on this subject
ls1tech.com
i'll let you know what i come up with

They should have good info. I am an old Mustang guy myself. The Domestic dudes got Nitrous down to a science.

Keep us updated.

[cjperformance]

i just sold alot of my nitrous stuff when i sold my transam aswell :( gonna have to rebuy everyhitng now

[jaybquick@JHM]

i just sold alot of my nitrous stuff when i sold my transam aswell :( gonna have to rebuy everyhitng now

At 2 to 3 times the price. Got to love the 4 rings. HAHA.

[CHECKERED]

I looked into this as an alternative to a supercharger, I don’t drive the S4 that much, and if I do it is on a long trip, so I don’t need constant extra power, a nitrous would give me the occasional extra kick I need to smoke something peppy say a chipped 335i, M3, stage 3 A4’s, ect
In any case, what I found out is that our motor is limited when it comes to nitrous due to relatively small displacement and very high compression, running a max of 100 shot with direct injection setup is the best bet.

[jaybquick@JHM]

Nitrous does better with high compression unlike blowers and turbos. Since well, Nitrous is very cold. It is quite normal (domestic crowd, Euro crowd not yet) to run nitrous in high HP numbers with high compression.

It comes down to the piston strength, rod strength, ring end gap, cold enough spark plugs, timing that isn't too advanced (luckily these cars are Motronic systems with knock sensors with a large range of correction that help this) and of course the design and jetting of the system.

I have been playin with nitrous dating back to iron headed and carbureted muscle cars, so a car like this is a dream with such a self correcting and helpful ECU setup. When I started with nitrous if I made a mistake I was building a new engine. These cars will help counter act that to a point. You can never idiot proof anything. HEHE

The compression is not the limit. I would have to sit down and do the math on the stock ring end gap to see if the piston rings would collide given XXX shot of nitrous based on our bore size.

[ginkof]

The compression is not the limit. I would have to sit down and do the math on the stock ring end gap to see if the piston rings would collide given XXX shot of nitrous based on our bore size.

Wow i wish i had any clue as to what you're talking about! sounds pretty cool though!

[Justincredible]

For the past hour or so I have been doing a lot of searching on this. It looks like the Audi would be a great match for this. NOS seems to like the Me system. The car can pull out timing where it needs to and the internals are strong. As I said there are several guys with the 1.8T that run it with no issues at all.

With that said lets look into doing this. I think I am going to start searching kits.

JAY.....you said you have lots of experience with this and you seem to have lots of info on this would you be able to point US in the proper direction for this. I have E mailed you in the past about parts for the B6 S4 and you were super helpful. I would love to get your thoughts on what we should use and how to set it up.

Im serious. I have been looking at almost every platform from domestics to imports. The Audi is better built motors then most of these guys and almost everyone with a V8 from a mustang and mercedes is running NOS with no issues so far. From what I can see if done right there is no real reason for worry. I am real excited about the supercharger but you can get the same power for 1/10th the price. These new systems are super advanced now. 30 pages of stories about people using NOS and not one of that horror story you hear about blowing up a motor.

From what I can tell. Be smart and you can spray the car for ever. Push the limits and get greedy and start looking for new parts. My brother has NOS on his snowmobile and it has been fine for years

[V8S4Fun]

Let's get a group buy on a nitrous kit!!! Seriously though, I may consider something like this, how much money are we talking?

[cjperformance]

Well i'm glad this is somethign people are interested in. it will make research alot easier if more people chime in

Pricing depends on what you want. Remote bottle openers and all the fancy stuff cost more.

Cost is also gonna depend on what we come up with on the kit we use. Pending if we use a Direct port setup or not. NOS or ZEX has a nozzle injector kit. this was used on the LS based engines for GM motors. Not sure if we could apply this to a audi injector.

Also fueling. has the stock fuel pump ever been tested of its limits? whats it good for?

Even if you spent 2000.00$ on a complete kit. that 1/5 of a supercharger install. itseasyto take off for whatever reason to sell the car etc.then you get basically half your money back when resellign the kit.



I would suggest a zex direct port system and self tapyour intake manifold


zex part number 82062


Now this kit is going to proabably go for around 1000.00

There will be a few other things i would suggest like purge, bottle warmer.
Pending the shot size will determine if we need a progressive controller or not

I think i would honestly be happy with a 100-125 shot-

Now lets figure out what size shot this motor can handle safely. If they can squeeze 500HP with boost we should be able to squeez more then that with N20

[cjperformance]

also that kit there retails for 1650

Kits going on ebay store sellers for 1079.00 shipped. I'm sure we can get them to break 950.00 shipped or so if we get a group going sooner or later

[cjperformance]

Also off subject. i forgot which car it was but it came turbo with the 4.2L
Has anyone been able to use that turbo-KIT off one of those cars to retrofit on the S4?

Only downfall to those cars that came with it was no option for manual

[V8S4Fun]

Definately need the remote bottle opener...and someone to install it for me, lol

[nimski62]

Dude the ME can barely handle ethanol.. how the hell is it going to handle nitrous. If i fill a tank of ehtanol up, it takes 2 20 mile drives for it to adapt, to where its not bucking and kicking.

[Justincredible]

E85 is going to be completely different than NOS. E85 is about 35% less mass fuel based for the motor. This means you need 35% more E85 to equal amount of standard fuel. This can be done you just need to get the ECU adjusted. Altho the flash point of E85 is greater you definitely need to add more fuel. It is kinda a toss up on it

As for the NOS. you are just adding liquid air no different then a supercharger but with liquid well gas when it gets to the cylinder. But when the motor makes more power and pulls in more air the MAF will read higher and the fuel will compensate (to a point) with a wet kit you don't need to worry about the fuel because the NOS will spray No2 and fuel.

As for the kit shown. I would not go with that. I would look for the one that uses the injector in the No2 fitting if you know what I am referring to. Tapping into our intake would be a last resort for me. I like the plug and play kit where the injector goes into the No2 fitting

The RS6 was a turbo motor and no it is not practical to try and use that turbo set up on our cars.

In all reality I am real gung hoe about this. I thought NOS might not be well received by most of the B6 guys so I never mentioned that I was thinking about it. We really should get all the info we can and try to make a move to get the best kit we can for our cars.

[F.An]

Dude the ME can barely handle ethanol.. how the hell is it going to handle nitrous. If i fill a tank of ehtanol up, it takes 2 20 mile drives for it to adapt, to where its not bucking and kicking.

What type of ehtanol do you run on? Is it 100% ehtanol or 85% or what? You need atleast 30% more fuel with ehtanol and im not sure your injectors or fulepump can hadle that increas. And using nitrus wouldnt be depending on the same parts. You just add a more flameable liquid into the combustionchamber.'

Cheers

[F.An]

E85 is going to be completely different than NOS....

You got first :P

[nimski62]

I ran e85 for about 3 tanks.. Def felt some increase in power, although the transition wasn't pleasent. And cold starts were hard, unless it was in the garage at night. It just ran like crap for 15 miles while the edu was adapting, then I just got 11 mpg!

[Mello]

Back in my Supra days, I used to always think nitrous was retarded until my friend put a 75 shot on his supra. That stuff is way fun. I ended up putting a 75 shot on mine and called it quits at that. My buddy got addicted and ended up taking out the jets all together and running an open -6 line. We figure it was a 200 shot at least :)

Now how about the supercharger AND nitrous :D

[cjperformance]

. NOS or ZEX has a nozzle injector kit. this was used on the LS based engines for GM motors. Not sure if we could apply this to a audi injector.

again we need to see if these will fit our injectors and manifold

NOS makes a couple dfferent kits application specific, we would be lucky if they fit. they do have a universal application. but again that doesnt mean it will fit.

[Justincredible]

Cj,

That was what I was referring to. The Nozzle injector Kit or NIK for short.
I don't see why it would not fit our injectors. Can you get me a part # for just one single NIK. I will order the one piece and test fit meant. I at this point think this is our best option. Due to the fact that the intake has internal doors that open and close we want to spray after the doors so we don't get a possible back fire in the intake

[cjperformance]

NOS universal noszle injector part number 08001NOS

[cjperformance]

NOS noszle fit standard bosch or delphi injectors.

So what injectors do we have?

[ieatfishburitos]

I like where this thread is going... subscribed

[jaybquick@JHM]

again we need to see if these will fit our injectors and manifold

NOS makes a couple dfferent kits application specific, we would be lucky if they fit. they do have a universal application. but again that doesnt mean it will fit.

I have seen those before and thought that would be a good route as well. however it take lots of plumbing which some people may not want to do and getting it to trigger right and WOT may be not easy for many.



With all this interest I am considering possibly making a specific system for this car and take the guesswork out (usually ends up in hurt motors playing with jets) and make the install as easy as possible. I already have an idea that would be specific for the 4.2l V8 for injecting it in each cylinder with less plumbing. I won't go into specifics but Matt (my machinist) and I actually went over some designs today for making a kit.

I will let you guys know if I feel I can make this in a cost effective EASY to do kit. It may take a while to get the best jets, etc. for the car for best and reliable HP. But it would make it less risky for the novice Nitrous guy. Especially for those who don't know how to log the data on their ECU and know what it means to do their own kit and not blow up their motor.

[cjperformance]

I like the sound of that ^^^^^ especially seeing that the new VF superchargers only making 100HP.. 10K not well spent there

Id like to see this motor take a safe 150 shot
Hoping its possiable :)

Whats the compression ratio on this motor?

[b00st]

From what I have seen the 2.7T and the 1.8T guys can run 100shot I have seen more 1.8 guys running 75 shot all day long with no issues.
There was also a fellow on here some time ago that was running a 100 shot. Never heard that he had an issue

i was attempting to do this on my A4 a looooong time ago. but after much work i didn't go through it. and we( my and cpt) felt a 50 shot would be safer for a k03/4 car. BAT cars would have no problems, there was more concern about over spinning that tiny k04. being an AEB engine code (forged pistons.) my setup was pretty solid, boost ramped up very fast and then couple that with the nitrous....we felt it was pushing things too hard considering the advanced timing i was running. and then we though about backing it up with scat rods but at this point it wasn't cost efficient for what we were trying to do. i can only think of 2 a4s that were running it but had a lot more work to boot. pushing a 100 shot which is typically a 4 degree retard of timing and then running on an A4 with a chip was timing was at least +10 degrees. i went through all the steps trying to figure out how to push my k04 further and further....realized that going BAT was the only way and an APR SIII kit wasn't much faster than me. custom was too expensive...i decided to leave it and purchase my S4.

subcribed to this thread. not sure how i feel about nitrous s4. i'm guessing everyone would probably want a wet kit for motor safety as opposed to dry. which will yield less gain. i guess we would have to watch the logs and start with something safe and then works the jets up there. since this is a trial and error and you need to be WOT....i'm guessing a wet kit with a 50 shot to start and see how it goes...then move up to a 65 or 75 jet and see.

i'd want remote bottle opener & warmer...prolly gonna need a purge kit too.
just my mixed thoughts. last nitrous kit i put in, went into a 73 nova...and before that it was zona's 97' 2.0L jetta.

[b00st]

Whats the compression ratio on this motor?

11:1

[Justincredible]

Wet kits and dryflow all make the same amount of power. So the use of the wet kit is just safer.

I vote 10 fold for JHM to help us with this. I would rather have something made for us then to try and piece together something.

[V8S4Fun]

Wet kits and dryflow all make the same amount of power. So the use of the wet kit is just safer.

I vote 10 fold for JHM to help us with this. I would rather have something made for us then to try and piece together something.

^2nd

[91gl]

i'd be interested in a cheaper alternative to the s/c kit. these motors, as most audi motors in the past are rather stout and im sure they could handle 75-100 wet no problem.

[ZachPDX]

3rd, Its gonna be a few years before i could afford a sc, something like this would be great till then.

[b00st]

would be a nice alternative...and we'd get better gas mileage as there is no reason to be hittin the switches if you ain't draggin. be nice to have an extra 100 on tap...i don't need it all the time...but would be nice to surprise a car or too.

so do your thing JHM!!!!!!

[91gl]

a complete kit would be great. have it available in stage 1 and stage 2. stage 1 a simple wet system ranging from 50-75 hp while stage 2 goes direct port with a custom manifold with adjustability from 75-135. all with the proper spark plugs for a reliable and streetable setup.

[H0LLYW00D]

Subscribed

[cjperformance]

all we need is someone to order the universal single noszle injector and that could work. I dont mind doing a little plumbing. Plus when you open your hood and people see it the know you mean business with a kit like that