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4.2 V8, what is theoretical max HP one could get with new chip, air filter, exhaust, and Optimax?

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Old 11-20-2004, 12:28 PM
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4.2 V8, what is theoretical max HP one could get with new chip, air filter, exhaust, and Optimax?
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Old 11-20-2004, 07:33 PM
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Default Depends on the V8. If its from an A6, S6 or S8? Not sure what optimax does..
My old 4.2 A6 Was dynoed and had 346 crank HP w/ 316 ftlbs torque with a GIAC chip and Supersprint exhaust.. air filter wasnt needed. So, if you had the S8 configuration of 360 hp stock you could probably get around 400 or so?
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Old 11-21-2004, 02:10 AM
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A8 D3 V8, has 335 HP standard.
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Old 11-22-2004, 08:28 AM
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Wow, that's pretty good!!!
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Old 11-22-2004, 12:07 PM
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I would like to see those dyno numbers.....
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Old 11-22-2004, 12:11 PM
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Default the C5 A6 4.2 tranny was not designed to handle more than the stock allocated power..
I blew my tranny. =)
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Old 11-22-2004, 07:57 PM
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yeah, but it had help, by dropping it into 2nd while doing 60 on the freeway :-)
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Old 11-23-2004, 02:14 AM
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heh!! =PPP
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Old 11-23-2004, 08:28 AM
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I do that all the time, but that's prolly the reason I got a new tranny too, LOL.
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Old 11-27-2004, 07:47 AM
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Default A stock Spyker Laviolette gets 400 hp
from Audi's 4.2L motor using the variable length intake manifold. Last year, their website also showed a 450 hp street motor using a short fixed length runner intake manifold plus race motors up to 600 hp.

BTW: The current <A HREF="http://www.spykercars.nl/">Spyker</a> website is a Flash6 pain-in-the-neck, and I wasn't able to link to any pics :-(
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