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Old 03-17-2001, 01:46 PM   #1
JJTheSubeDriver
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OMG! You're going to NOS a WRX??!?!? Bye bye engine. Your best bet IMHO would be a bigger turbo.

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Old 03-17-2001, 01:50 PM   #2
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NOS isn`t bad in small amounts on a prep`d engine. I wouldn`t mind spraying some into the intercooler just for the cooling effects.
No real harm in that.
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Old 03-17-2001, 03:13 PM   #3
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If NOS is activated via a temperature switch then it would be awesome. Lots of the H crowd does this to futher "supercool" the intake charge.
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Old 03-17-2001, 03:48 PM   #4
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maybe you can do one of the following:
use the dry NOS kit to spool up before the turbo kicks in..and cut it off when your boost level reaches 10 psi or something..that way you will have no turbo lag.

use the wet NOS kit on top of the boost..NOS kicks in when you are on WOT...this might be a little insane...you go crazy fast

i know a couple of Z owners that have both setups, they haven't blown their engines yet and are all in the 11's qtr mile..just use it wisely then you should be fine...but make sure you do the basic stage upgrades before you go NOS, namely, intake, exhaust, headers, test pipes, catback exhaust, colder plugs, and maybe larger injectors. Hope this helps.
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Old 03-17-2001, 07:41 PM   #5
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Hey JJ what the diff. if you put a bigger turbo on to get more air in, or if you shoot in the oxygen in the form of NO2? You still need more fuel and to retard the timing to avoid the detonation that with kill the engine. Either way you will get more power, just different characteristics.
Hey! Why not use a supercharger for the bottom end, a big turbo that really kicks in around 4000 rpm and nitrous for WOT. WHOA!!

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Old 03-17-2001, 07:43 PM   #6
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Does anyone know any more about injection into the intercooler? Like performance as well as cooling effects? Thanks,

IAn
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Old 03-17-2001, 07:48 PM   #7
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New nos systems are actually safer than a turbo or supercharger you could easily get away with a 50 to 75 hp shot without damaging your engine due to the fact that the system is not in use 99% of the time. You know 10 second every month or so as compared to a constant boost from the turbo or supercharger. Heres another idea. Twincharged intercooled nitrous injected rabid scooby ( say that 3 times fast) use a procharger (intercooled supercharger) for low end power and a turbo for the top end!!!!!!!!!!!!!!!!
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Old 03-17-2001, 07:59 PM   #8
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Talk about a massivley large engine compartment! LOL. Intercoolers and superchargers and injectors everywhere...

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Old 03-17-2001, 08:31 PM   #9
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you can only pick 1, sc or turbo, not both, can we say greeeeeedy or just dumb? But nos isn't a bad idear...
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Old 03-17-2001, 08:35 PM   #10
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I think we would be sayin joke, not dumb.

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Old 03-17-2001, 08:40 PM   #11
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All you newbies in here wake up!!! (I'm joking around here, no flaming) In an issue of SCC they profiled a "Twin Charged" Toyota MR2, the old skool kind. It was both super and turbo charged. Yes it can be done...the car utilized two intakes, one for each charger. I don't remember the HP specs but it was pretty decent for a four banger...

Someone back me up so they all don't think this crack I'm smoking is bad.

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Old 03-17-2001, 09:49 PM   #12
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NEVER Use a wet Nitrous system in a EFI car unless you knwo EXACTLY what you are doing and use an nossle for EACH cylinder right near the injector for that cylinder. Otherwise you WILL burn a piston.

Try a small shot at first, say a 25HP. Then if everything is fine you can add some more. Try gettign some guages first....
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Old 03-17-2001, 09:57 PM   #13
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Thank you skylab. I know its possible cuz my friends and i did it on 86 firebird. and by the way you can also intercool a supercharger its called procharging. I did that on a 91 geo tracker (weiand supercharger and ihi intercooler with nos spray on intercooler) 200+ hp!!!! may she rest in pieces (she will be ressurected someday ONLY FASTER)
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Old 03-17-2001, 10:04 PM   #14
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One of the lancia rally cars was both super and turbo charged. Its quite possible to do. Maybe not for sane people, but hey. It works.
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Old 03-17-2001, 10:14 PM   #15
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I was just pointing out how the other people were joking, not saying it wasn't possible. Also, the difference between wet and dry systems is...(?) Wet injects directly into the cylinder and dry is into manifold? And nitrous injection into the intercooler on a turbo? Anyone?

IAn
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Old 03-18-2001, 12:53 AM   #16
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Post NOS and turbos

I was wondering about NOS and turbos, ecspecially the new WRX. What are the main ways of injecting NOS, and what are the side affects. Obvisouly, shorter engine life, but how much of a performance gain is available in each set up (i.e. dry vs. wet). Also, what about injecting NOS straight into the intercooler. Are the effects here great or minimal compareitively? Thanks,

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Old 03-18-2001, 08:33 AM   #17
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"use an nossle for EACH cylinder right near the injector for that cylinder. Try a small shot at first, say a 25HP"
Guess what? If you go to a direct port NOS system, where you run 4 nozles, 1 for each runner, minimum you will be able to squize will be around 100hp shot. Thats a lot of nitrous for a 2.0 stock motor, WRX or not. Wagon said use a 25 shot to begin with but what he did not factor in was that meant 25x4=100 which would be 125+
If you want some good 1/4 mile times, run low boost/close to stock and use a single fogger/wet 50-75 shot system. I would start with the 50shot. Check your EGTs at the end of the 1/4. The 50 shot in reality would be a 70-80hp increase thanks to the cooling effect of the intake charge. This will give you instant power and torque off the line and keep the charge temps under check down the 1/4. Why use wet? Well, the stock ecu will take care of the fuelling at the stock/near stock boost levels,and the wet system will supply the fuel needed for the nos. If you had a stand alone ECU then you could use a dry system.
You could also use the nitrous as a spool up/off the line kit and then just spray it ontop of the intercoller for the cooling effect. You would need a purge kit, and plumb it so it sprays it on the intercooler.
I would definately consult a Nitrous expert before doing anything.
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Old 03-18-2001, 06:09 PM   #18
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A wet system supplies the fuel it needs to react with the increased oxygen levels via its own injectors and therefore is more difficult to install. A dry system relies on the stock injectors to add the needed fuel and therefore increases the stress on your fuel delivery system.
Buy the way in the early eighties a guy in, Texas I believe, used a superchager and twin turbos on a Testarossa and broke into the 1000hp club(@ the wheels) and the World record land speed diesel truck uses twin superchargers and quad turbos to motivate its 18000 lbs. to 253 mph.
Kevin
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Old 03-18-2001, 06:16 PM   #19
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as a reader of turbo magazine for about 12+ years(its gone to dookie now), i remember an article on a street drive ferrari 512 berlinetta boxer with a supercharger, twin turbos AND nitrous. it made 900 something horsepower. was pretty complicated but if you
gave me a 12cylinder ferrari(oh, joy!!!) and a blank check,i could come up with some sick
stuff also. blank check is the vital operator. a two stage(possibly boost signaled)system could give 75hp from 2500 to some predetermined boost level and then drop down to 30 or 40hp after that for additional intercooling.
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Old 03-19-2001, 08:46 AM   #20
ASR
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The testerrosa was built by Konig. That was a buitiful car.
The twin stage NOS sounds good. Look into it, I am sure NOS would have the electronics to make it happen.
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Old 03-19-2001, 04:51 PM   #21
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For NOS to work properly, you HAVE to make sure you have fuel and retard the timing. I will look for my NOS paper work. If you read up on it, it is really a simple and cost effective way to gain some solid HP. Good banf for the buck (if done properly).
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Old 03-19-2001, 07:57 PM   #22
Dre2932
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The only NOS I'm going to use is the Octane Booster. Other then that, I would Turbo charge your car.. The NOS will surely kill your engine..
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Old 03-20-2001, 03:59 AM   #23
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I would go for the turbo, or a bigger turbo for the WRX. But there is nothing wrong with NOS. A 50 shot fogger would be plenty. I would make sure its a progressive spray. It sprays like 25hp at 3000rpm and increases to 50hp by about 5000rpm. Awsome!
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Old 03-20-2001, 09:39 AM   #24
Kevin Thomas
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I've said this numerous times before so here it goes.

I've been using Nos and Turbo since mid-1999. I just went to a 60 shot in October of last year. I was previously using a 50 shot. A compression check in June of last year after a year of 'Nos abuse' showed everything was in spec. All the cylinders were fine. This was (and is) on 92 Octane gas. Until earlier this year, I was using the stock spark plugs. I changed them just to be safe. The older ones had nothing wrong with them. Also, midway through last year I changed fuel pumps. Even still, my old fuel pump was just fine.
  • With a turbo (5psi) an no intercooler, Nos was fine.
  • With a turbo/intercooler, Nos was fine
  • Stock fuel pump was ok.
  • Stock spark plugs were ok.
  • I did not have to retard timing or upgrade anything (engine wise). Everthing was fine.

I use the 'dreaded' dry manifold Nos setup (Kit #5122, #5123 is for 2.5ltrs) that is said to be very, very dangerous. Only thing that went was my tranny, which I thought was supposed to support above 400hp so some said. Even still, my tranny didn't go boom until AFTER I got a bottle warmer for my Nos. The bottle warmer increases the pressure in my bottle. More pressure = more power.[/list]
No-one on this list has blown an engine using Nos. Get someone to install it who knows what they are doing. I had Rallispec do mine and it was their 1ST Nos installation. Imagine how I felt doing this on my high compressioned, not-turbocharged when stock engine. I almost pooped my pants the first time I used it. That was two years and many, many, MANY emptied bottles ago.

If you fear using Nos, than please don't use it. It's probably best this way since it can get ABUSIVE.

BTW: When my engine goes, you'll see a lot of people here say, "See what I tell you, Nos is terrible to use". I don't take care of my car like I should. I use the bottle way more than I should and I have over 100K on my car. I have been using it since 62K (The Nos), turbocharged@59K. This should say something for Subaru reliability *Shameless plug* and RalliSpec's careful installation.

Just for the record, I don't recommend using this setup. For one, I am nuts/crazy and just wanted to do this for once after reading about the import phenomenom in mags like SCC. 2nd...it's basically uncharted territory. I don't see too many people doing it. I could just be lucky so far. 3rd...Even this will not be enough. I was praying for low 15's with Nos late 1999 to early 2000. I hit low 15's *yay*, then high 14's, then low 14's, then high 13's by October last year. After learning how to launch, when to hit the switch (Right at the start..hehe) and playing with tire pressures, I got down to a 13.2. Is this enough. NOPE I'm losing my mind and hoping for 12's after my new tires get delivered. It's never enough. Don't get caught up in it. L8Rs



[This message has been edited by Kevin Thomas (edited March 20, 2001).]
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