wrx whp - Subaru WRX Forum
 
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#1 Old 03-05-2005, 01:50 PM
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wrx whp

i have a stock turbo and a lot off bolt on parts on my 02 wrx.currently my car just dyno at 210 whp at 15psi . what kind of hp will i be running if i put 20 psi properly tuned y would really like to hear you're opinions
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#2 Old 03-05-2005, 03:19 PM
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20 psi on your stock turbo=bad news.

I think something like 17 psi is the max you should run the stock turbo on.
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#3 Old 03-05-2005, 03:35 PM
 
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You could run 20 w/ the correct tune the stock turbo loses efficiency at anything over 17 psi. 210 whp at 15 psi is pretty good also. What mods do you have?
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#4 Old 03-06-2005, 08:53 AM
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Quote:
Originally Posted by IBAUCLAPlaya
You could run 20 w/ the correct tune the stock turbo loses efficiency at anything over 17 psi. 210 whp at 15 psi is pretty good also. What mods do you have?
I have fmic ,reflashed computer ,full exhaust,kn filter,no boost controller .Do yu think this 210 whp are good with this mods or should they be higher.
Also if i was to replace my turbo i would want something with similar spooling times so what do you suggest
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#5 Old 03-06-2005, 09:43 AM
 
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VF34 for quicker spool up or VF22 for a little more top end. You could probably tune for 17 psi on the setup you already have and get around 220-230 whp.
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#6 Old 03-06-2005, 10:56 AM
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Originally Posted by IBAUCLAPlaya
VF34 for quicker spool up or VF22 for a little more top end. You could probably tune for 17 psi on the setup you already have and get around 220-230 whp.
Now if i get the vf34 what else would i need,would my reflased computer work or i would have to get some other kind of managment,and what about the injectors and fuel pump do i have to replace them? If i change it i would only run the vf34 at 15 psi ,will i see the difference if i'm running at the same boost levels that i'm runing with the original turbo in this case 15lbs.
Thanks for the help i dont want to break my engine
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#7 Old 03-06-2005, 12:13 PM
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If you change youre turbo you will need to change afew other things. Mainly injectors and the ecu map or get utec/piggyback or some other e.m. You seem to have all the other supporting mods. Also for the price id get a fuel pump.
Bigger turbos will push more air at the same psi of smaller turbos. Thus 17psi on the stock td04 is pushing much less air than an 18g at 17psi. You get all kinds of benifits from this like lower egt's, more power......
you could port the td04.
thats good hp numbers for basicaly stage wrx. enjoy.
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#8 Old 03-08-2005, 07:18 PM
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whatdoes a stock wrx have stock? 227 at the flywheel, what at the wheel? i heard since its an awd we lose 30% of our power is that true?
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#9 Old 03-08-2005, 08:20 PM
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167 at the wheels is a commonly accepted number.
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