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Old 02-15-2006, 11:03 AM   #1
greysave
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Default Nitrous on STI

Is anyone sparying on there STI? I have an sr55 and am going to a axis stage 3 block. I want to know the difference in power and 1/4 mile times if possible. With the sr55 I was able to squeeze out low 12's but I was expecting more. It seems like there are alot of disappointing times with the STI and was wondering if anyone solved the problem with nitrous.
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Old 02-16-2006, 12:14 PM   #2
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I guess people don't do nitrous on subarus?
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Old 02-16-2006, 12:24 PM   #3
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Quote:
Originally Posted by greysave
I guess people don't do nitrous on subarus?

not to often.
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Old 02-16-2006, 01:33 PM   #4
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post in 2.5L forum for more results. What does this have to do with EM?
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Old 02-16-2006, 02:04 PM   #5
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Why would you NO2 an AWD car If you wanted good quarter mile times, you should've bought a V8. I can understand wanting to make something fast...but its almost an oxymoron to NO2 an STi unless it is for some specific, model-restrictive competition (like evo vs. sti), but even then, it still seems like a waste of money.
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Old 02-16-2006, 02:07 PM   #6
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There is a guy on iwsti.com who has been playing with nitrous on a stock turbo STI. I don't think it blew up yet.

You should be able to go faster than low 12's with an SR55, provided you practice a lot. It took me 80+ quarter mile passes before I ran my 12.4 on the stock VF39.
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Old 02-16-2006, 02:46 PM   #7
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Quote:
Originally Posted by shemoves
Why would you NO2 an AWD car If you wanted good quarter mile times, you should've bought a V8. I can understand wanting to make something fast...but its almost an oxymoron to NO2 an STi unless it is for some specific, model-restrictive competition (like evo vs. sti), but even then, it still seems like a waste of money.
i do not support Nitrous on the evo or sti either... im just more like ...how to say...you wanna be fast...build the engine up and tune... nitrous just seems like a quick way out and sometimes unsafe.. i know one guy whos used it for his wrx and possibly his evo afterwards(but he stopped using it at all)..but hes pushing over 400+hp and running low 12's(without it) ..just personaly preference i suppose..
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Old 02-16-2006, 05:50 PM   #8
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Well, if you had a big turbo and were planning on Drag Racing (Umm....FYI People DO Drag Race AWD cars), you could use the N2O to spool the turbo.

Or if youre highway racing and the bottle just happend to be open and youre losing, you could arn the system for the extra advantage..

You guys are ignorant if you think people ONLY AutoX, RallyX, Raly, etc etc, where N2O is not used.
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Old 02-16-2006, 06:27 PM   #9
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Quote:
Originally Posted by BLK REX
Well, if you had a big turbo and were planning on Drag Racing (Umm....FYI People DO Drag Race AWD cars), you could use the N2O to spool the turbo.

Or if youre highway racing and the bottle just happend to be open and youre losing, you could arn the system for the extra advantage..

You guys are ignorant if you think people ONLY AutoX, RallyX, Raly, etc etc, where N2O is not used.

do you use it? whats your experience?
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Old 02-16-2006, 06:28 PM   #10
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Quote:
Originally Posted by rjrutzky
post in 2.5L forum for more results. What does this have to do with EM?
This section is Engine Management & Tuning, so I can see why it belongs.

N2O is a cheap reliable power adder if used correctly. Proper timing controls, AFR, and a good set of spark plugs will work. I think you could use the Hydra Engine Management to set it so the Nitrous activates under a certain amount of boost and rpms. Zex has their own spark plug line they recommend for use with Nitrous and Forced Induction.

If you are seriously concidering Nitrous, I would check out all the Nitrous kit Manufacturers. Read their FAQs and check out their kits. Also check out the forums for several different EM manufacturer's, see how they recommend using nitrous with their systems and ask some questions there.

If you educate yourself and do it right the first time, then you won't have any problems using it.
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Old 02-16-2006, 06:39 PM   #11
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im going to run a 75wet shot of nitrous express. im using hydra and a gt65 turbo kit. phil said its ok for me to spray on c16 with no problems, but im trying to let me spray with just alcohol injection. i dont know if hell do it for me yet, but i know its safe on c16.
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Old 02-17-2006, 09:04 PM   #12
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Quote:
Originally Posted by ryanpietro
im going to run a 75wet shot of nitrous express. im using hydra and a gt65 turbo kit. phil said its ok for me to spray on c16 with no problems, but im trying to let me spray with just alcohol injection. i dont know if hell do it for me yet, but i know its safe on c16.
The latter was exactly what I was thinking of doing? I was also considering a 75 wet shot which was recommended to me by doug at top speed.
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Old 02-17-2006, 09:15 PM   #13
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With a 75 shot doug said I should see a very nice hp number combined with the 55lb turbo. I was at first considering doing a larger turbo like a gt35 but am shying away from it for 2 reasons. One for daily driveability purposes I don't want to be at 600 hp all of the time. Second I still would like to use my car for autox occasionally and the gt35 is enough said. With a stage 3 block and a I should be well over 550 whp which is where I want to be.
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