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E30 Racer · 11-17-2012, 07:05 PM

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?

11-17-2012, 07:05 PM	#18
E30 Racer Private First Class Drives: '11 1M, '99 540i/6, '89 325is Join Date: Aug 2011 Location: Ohio Posts: 177 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?