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Old 11-25-2006, 06:00 PM   #1
Chopstix396
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Default Boost referencing nitrous controller

New product from Nitrous Express...curious as to whether this would really be a product that could help street driven applications

http://www.nitrousexpress.com/Pages/nxd5000.htm

it would allow you to use nitrous to spool the turbo than back the nitrous down as boost builds. Since it will allows you to progress the nitrous according to RPM it should allow for a near flat TQ curve from 3k rpm to redline
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Old 11-25-2006, 06:08 PM   #2
Master2192
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Seems like a great idea. I wouldn't consider it a "street driven" application since it is technically illegal to use Nitrous on the street.
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Old 11-25-2006, 06:33 PM   #3
Chopstix396
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thats what the purge and auto bottle opener is for..close bottle and purge the system before you pull over
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Old 11-25-2006, 06:38 PM   #4
hippy
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As far as I know, it's not illegal to use nitrous on the street. How much does the product cost? How does it work? It just says "progressive" and "dual stage". This could mean many things....

peace
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Old 11-25-2006, 06:45 PM   #5
dibblejr
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Thats exactly what I used my nitros for on my 02 WRX. The same concept as a twin charger.
You use your boost to enable the nitros to spool your turbo, the downside to this is you can over spin your bearings and it will eventually lead to premature turbine failure.

Jay-R
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Old 11-25-2006, 06:50 PM   #6
hippy
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Overspin your bearings? I've never heard of that, please explain.

hippy
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Old 11-25-2006, 07:17 PM   #7
dibblejr
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Hippy,
While I was running NOS on my setup on my 02 for tuning I was peaked at 17psi however in 1st and 2nd the NOS would cause spiking so quick that I could not control it around 21, It was way over my required setting, it would then suddenly drop back to the 17psi threshold. Basically my turbo was being over worked vf39 if I recall. This did cause premature bearing failure and I had to replace the turbo.
maybe my terminology was off, but I just call it overspinning, it is actually boost spike. My turbo was actually spooliing way too much under the NOS. Eventually the 100 shot accidentally led to my engine failure as I acccidentally hit the NOS trigger switch during staging in Alabama, when I reached peak boost in 4th gear the NOS engaged and I lost all 4 cylinders.

jay-r

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Overspin your bearings? I've never heard of that, please explain.

hippy
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Old 11-25-2006, 10:51 PM   #8
hippy
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If you saw the needle in your boost gauge bouncing up and down, and you heard something coming from the turbo(a surging sound ), chances are you had "compressor surge". This can hurt a turbo, and if you run n2o at lowish rpms or a high boost, it's not so hard for this to happen.

peace
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Old 11-25-2006, 10:55 PM   #9
dibblejr
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hippy,
thanks for clearing that up. I still have these Japanese words in my head so sometimes even I get things messed up a bit. It could be from all my meds also.

jay-r

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If you saw the needle in your boost gauge bouncing up and down, and you heard something coming from the turbo(a surging sound ), chances are you had "compressor surge". This can hurt a turbo, and if you run n2o at lowish rpms or a high boost, it's not so hard for this to happen.

peace
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Old 11-27-2006, 04:46 PM   #10
Chopstix396
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the nice thing about this controller is it will progressively control the nitrous according to boost....IE...0psi=100%....5psi 75%...10psi 50%...15psi 25% etc.
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Old 11-28-2006, 10:15 PM   #11
shadymilkman129
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Awsome, I was actually looking at getting a nitrous kit with like a 25 shot for this exact reason... For a little extra pep while my turbo was spooling up and to help it spool up faster! Plus I want a intercooler cooler sprayer ring! they work great. I was going to get a CryO2 kit but they are like 300 dollars for a co2 tank and some steel braided lines lol...
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Old 11-29-2006, 09:46 AM   #12
xcntrk75
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Okay, so we all understand the foundation behind this kit and its advertised purpose; but can somebody pls give me a “real-world” example of how this kit would benefit our FI platforms in any given driving environment?

1/4 mile for example: Aside from launch, the entire run is made while on boost so this component would never be used???

Open-track example: Aside from braking, the majority of the course navigation is done at full throttle and constant boost, so again would never be used???

Autocross/small circuit example: I can clearly see a very positive benefit on the autocross course, where you’re running at low speeds and constantly in/out of boost and frequently in spool-up territory. Yet as we all know, no nitrous allowed for any type of regulated autox competition.

Street racing example: (not like anybody here actually does it) yet again, full runs at WOT and constant boost.

Besides, wouldn’t you benefit more from a nitrous system by having it spray up top while on-boost then down low and only for spool-up? Or is this product designed to augment an existing nitrous system, say an additional stage used down low while a separate system sprays up top???

I'm missing the value of this product....
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Old 11-29-2006, 10:38 AM   #13
dibblejr
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+1, as I mentioned earlier in this thread, a NOS kit is just asking for engine failure.
While I ran mine on my 02 WRX for quick spooling of the turbo during launch, an accidental bump of the trigger switch turned into all 4 piston ringlands disintegrating in 4th gear.
Hey but its their $ and they can do what they like. I am much happier running Alky/Meth.

Jay-R

Quote:
Originally Posted by xcntrk75 View Post
Okay, so we all understand the foundation behind this kit and its advertised purpose; but can somebody pls give me a “real-world” example of how this kit would benefit our FI platforms in any given driving environment?

1/4 mile for example: Aside from launch, the entire run is made while on boost so this component would never be used???

Open-track example: Aside from braking, the majority of the course navigation is done at full throttle and constant boost, so again would never be used???

Autocross/small circuit example: I can clearly see a very positive benefit on the autocross course, where you’re running at low speeds and constantly in/out of boost and frequently in spool-up territory. Yet as we all know, no nitrous allowed for any type of regulated autox competition.

Street racing example: (not like anybody here actually does it) yet again, full runs at WOT and constant boost.

Besides, wouldn’t you benefit more from a nitrous system by having it spray up top while on-boost then down low and only for spool-up? Or is this product designed to augment an existing nitrous system, say an additional stage used down low while a separate system sprays up top???

I'm missing the value of this product....
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