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Old 09-26-2004, 12:00 AM   #1
samwY
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Default Whats a reliable WHP for a Stage 4 WRX?

18G with RA Gearset, UTEC, FMIC, full turboback, all the supporting mods, etc.

I do not want to blow my motor and the tranny is said to live up to 350whp with the RA Gearset.

I was looking for at least 320whp but if I'm wondering if I can push more.
Whats the highest WHP I can tune my car to?

Thanks
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Old 09-26-2004, 12:05 AM   #2
Davenow
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anything over 320whp is asking for trouble with the stock motor.
290-310whp on the other hand, if properly tuned and driven sanely will last a long time

If you want the kind of numbers you say you want, its only a grand for a v7 short block, which, with the money you spent to get to the point you are at now, is easy to come by spending
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Old 09-26-2004, 12:20 AM   #3
samwY
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I spoke to a guy with a 326whp 320 torque tune with similar setup of 18G + RA gearset and he's been fine up to 88,000 miles.

I guess its different for everyone, but that short block is tempting. Argh!
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Old 09-26-2004, 12:30 AM   #4
ebeck
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It all depends on ghow you drive it. I see cars loose cylinder pressure on one or more cylinders ar 35,000 miles running 280whp. Also depends what dyno your talking about.

US motor, 350-375 crank power and drive it with gusto. You pick the dyno. Adjust to that figure. What is the point of running 450 crank power and driving like you have a stage 2 car to just save it?
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Old 09-26-2004, 05:29 PM   #5
samwY
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300-310whp is reliable to beat on?
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Old 09-26-2004, 09:19 PM   #6
ebeck
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Some will say yes, some will say no. Depends on how and what you use to measure. On a Dyno-Dynamics, the most sophisticated device of its type in the world, 300-310 is 400+ crank power. I don't think the US motor will like that if you punish it alot. Alot depends on the driver, the gas in your area your climate...... Again, some will say yes, some will say no.

How about this, stop at the VF34 and 17# boost. The VF22 produces more peak but the VF34 power curve is superb and broad. Generally more driveable in my opinion. Again, some will say yes, some will say no.


Good luck. You have to pay top play.
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Old 09-28-2004, 03:12 PM   #7
4830DeuceWRX
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im about to be at stage 4 with a vf22 P&P, Im not going over 300, 280-300 is good enough for me.
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