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      11-17-2012, 08:05 PM   #18
E30 Racer
First Lieutenant
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Drives: '11 1M, '99 540i/6, '89 325is
Join Date: Aug 2011
Location: Ohio

iTrader: (1)

I tend to agree, but some of the race tunes are pushing 18.5 psi+. I can't imagine boost creep at those levels would be OK. Will the OE diverter work reliably with more than stock boost levels?