Quote:
Originally Posted by steve99
Most guys get tuner to tune car using tuners tailpipe wideband.
When they install failsafe wideband it usualky just to save motor if it runs way lean so doesnt need to be super accurate for failsafe function just consistent . Just pointing out you could do that with stock sensor rarther than jnstalling separate sensor and wiring.
I would also assume ecutek would have warned tuners not to use the stock sensor for full time closed loop fueling in racerom 10 if the stock sensor was not accurate or consistent enough ?
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I've found many dyno wbo2s to be terribly inaccurate. Those systems are very expensive and few dyno operators want to spend the cash to get them regularly calibrated which they frequently require. Combined with the fact that they sit in the tailpipe, you get post cat readings and fresh air mixing in, which leads to lousy readings.
The factory sensor is useful to the low 12's, you can stretch the calibration to high 11's but it isn't terribly accurate there. I wouldn't use closed loop fueling with a factory wideband even with the stretched calibration.