3psi that is a little high. 1psi has been seen on many accounts 2 yes but 3psi would be a rather poor job.
Here are great examples of do it yourself. And the how to on a VF engineering kit.
Aftercooler: https://www.bimmerforums.com/forum/s...r-on-a-Vortech
Intercooler: https://www.bimmerforums.com/forum/s...ll-12-psi-info
I have exactly what you’re looking for minus the 3.5 hfm and tune.
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