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WildBillyT · 01-26-2012, 02:59 PM

Probably new O2s. Denso or AC Delco only as BOSCH O2s can be spotty.

If the O2s were new when they were put on then there's a chance that they fouled during the header burn-in.

01-26-2012, 02:59 PM	#2
WildBillyT Ayatollah of Rock N Rolla / Admin Join Date: Mar 2006 Location: Parts Unknown Posts: 12,573 iTrader: (10)	Probably new O2s. Denso or AC Delco only as BOSCH O2s can be spotty. If the O2s were new when they were put on then there's a chance that they fouled during the header burn-in. __________________ -Bill '68 Nova SS: Vortec 350 6 spd 4.11 9" DSE 4wdisc