Keep it Copacetic
Join Date: Feb 2004
Location: St. Louis, MO ||| Los Angeles, CA
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I don't know about headers. I've seen some headers actually decrease the efficiency of the supercharger, somehow. Some people have added headers and later found that they need their s/c to run at a higher psi to make the same power.
I'd say a lot of maintainnence upgrades would be good, as well as a good cooling system overhaul. Other great things ot help out the s/c are lightweight flywheel and shorter differential gearing.
On the 325 i'd defintely upgrade to some M cams.
1995 BMW M3 Turbo - Dakar/Black