P2A00 - A/F Sensor Circuit Range/Performance (bank 1 sensor 1)

Jordo! · 08-25-2014, 04:36 AM

Quote:

Originally Posted by jwick

The hiccup is the same for all BP kits. Happens right as you pull up to a stop. Rpms dip a bit and car goes lean then rich before it stabilizes itself. The going theory is the fact that the kit vents crank case instead of routing pcv back into it. Like the ECU is expecting it. Galeforce has a thread on here that I can't link cuz I'm on the cell. Mitch is very familiar with it too.

I'll admit that although I'm mechanically sound what goes on in the ECU and tuning software is somewhat new to me and I'm not very good at understanding the meaning of what I'm seeing.

Hmm. That shouldn't cause it unless its pulling vacuum, although its possible that it is... see further here Pcv Valve For Turbo & Centrifugal Apps - Forced Induction and Nitrous - SilveradoSS.com

In any case, your sensors sound ok, and it sounds like this is a common problem. Maybe include a PCV and vac line and/or catch can? If OEM PCV isn't up to it, I know there are aftermarket PCV's for boosted applications.

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