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      10-11-2008, 12:37 PM   #9
Z4HN
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Drives: '05 Z4 3.0i, '08 M3
Join Date: Aug 2007
Location: USA

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Sigh. I honeslty don't get it. I swear I've seen more stubborn people here who just don't listen than any other bimmer forum. It's frustrating. The Z4, or BMW in general, has been around for a long time. There are some here who are really knowledgeable about the Z4 and give good advice. Yet some other just keep ignoring them.

First of all, your test is flawed. Throw away the results. No intake in the world is going to make your Z4 0.6 sec quicker in 1/4 mile. You can add headers, less restrictive exhausts, true CAI, & software, and it's not gonna make your Z4 0.6 sec quicker.

Second, your butt dyno needs calibrations. Your hot-air intake sounds good, but it'll indeed lose horsepower and torque. You'll especially lose a lot of torque at higher speeds (+50mph). Leave the hack job to ricer tuners please.
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