Thank you to all. This has been very helpful. It is a street car as I have an e36 for the track so I might consider going with the ETS intercooler as it appears to be a better engineered IC but not any larger (at least it doesn't require cutting). The CAI seems to make great sense for a twin turbo vehicle. I have not heard of anyone installing a CAI and wished they hadn't later. Thanks again for your opinions and insight.
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