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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,273
I've wondered that too but if it wasn't an improvement the factory wouldn't have done it in the 964 turbo/965.

It doesn't make a huge difference on a stock car but turbo lag is reduced a little since there's less volume for the turbo to repressurize after an upshift and the air flow going to the throttle body is straighter.
The smaller blow off valves react faster and there are many to choose from and you can choose which way you want to mount it, upright or sideways.

And, it frees up so much room under the intercooler... you could even mount fan to the bottom of the intercooler to suck more air through it, and it allows the use of more aftermarket intercooler upgrades.
Old 11-23-2009, 10:53 AM
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