nope runs fine on a stock o2 however the wideband puts an exact number on the AFR which is excellent when tuning, much more accurate then the tail pipe sniffers
they are but there position at the end of the exhaust isnt ideal for tuning. the few tuners i hve spoken to agree that a wideband o2 is better when its much closer to the engine (pre-cat, near the stoc o2 )
Be careful when choosing / purchasing a wide-band - specifically in regards to what O2 sensor the package uses. Different sensor types have different life cycles, accuracy's and possible common problems etc
Most mainstream cheaper Wide-band packages utilise the Bosch Lsu 4.2 series sensor which can be prone to having their accuracy compromised (value drift). This is usually from the O2 sensors being poisoned from high heat and no maintenance (they can be proven to last with regular alcohol cleaning and zeroing to atmosphere).
More to the point, when selecting a wide-band - do research on the sensor type and and common problems that the sensor maybe prone to. Im pretty sure the Bosch Lsu 4.9 is quite a good reliable sensor (not prone to heat decay or zero shift)
Light up with Lyle - Electrical / Communications / Instrumentation
or what about just using the wideband for tuning only then replace it with a stock unit?
Back in the day that was how it was done most of the time. Tune it on a dyno relying on the WB and then revert to using a NB for safety only and not closed loop fuel control.
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Originally Posted by grifty
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