I'd go one step further: the Bosch O2 sensors are crap, and fail easily; I burned through a bunch when I was running the stock EFI. The OEM sensors are much more rugged and seem to last significantly longer. YMMV, but that's been my experience.


Jeff Moskovitz
1986 turbo 4X4 truck
1998 2.7L/M5 4X4 4Runner

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