Technically you dont need eathier! The point of a wide band, 1: is tuning, 2: to monitor you A/F reading... So you dont blow your car up. As far as the AFPR thats to adjust your fuel pressure. Once again tuning. With the bigger injectors its a good idea to do get both wideband and afpr.
But...
I was talking today about BB turbos with Justin and we both dont know how they work from a standard turbo? So how do they work?
I searched and could not find info...
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