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Old 06-30-2021, 02:42 PM   #55
Camaro1973

 
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Drives: 2019 ZL1
Join Date: Mar 2019
Location: NJ
Posts: 1,537
Quote:
Originally Posted by FoundNemo View Post
Yea I guess I was confused, how did they tune it with a wideband without removing the narrow bands if there is only one port pre-cat in collectors on each side?
I’m no expert tuner by any means but here’s my take. Narrow band only contains info on whether it’s rich or lean. Wideband is just what it sounds like, can read very lean to very rich. This is what’s needed to tune properly as your getting the actual AFR and not just data from the narrow band which is a lean/rich condition.
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