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Date: Wed, 01 Nov 2006 16:24:51 GMT
From: - Bob - <uctraingnospamanet.com>
Subject: Re: Cold Air Intake


On Mon, 30 Oct 2006 21:47:04 +0100, MH <nonospamo> wrote: >If you want more speed you need more power. For more power you need to burn more >fuel: >- increase displacement >- increase boost >- increase RPM > >Anything else will only be marginal... I disagree somewhat. You left off "increase flow and effective charge" First, the charge: the difference in boost as the outside temps change from season to season by 30 degrees or so is fairly substantial and measurable by the butt dyno. This crude testing demonstrates that due to the exponential effect of the forced induction that a cold charge makes a big difference vs a warm charge. So, a CAI will help with HP. But, I did say "disagree somewhat". You likely won't notice a CAI upgrade alone when driving. If you want to add some response to this motor, do a CAI, add a sport exhaust, remove the turbo silencer, port the cast intake pipes and port/match the castings at the throttle body, and add an MBC or ECU update. To the OP - most of us have done our own CAI on these cars. Most of the other mods are IY or advanced DIY. I can supply more details if you care.

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