Corvette C8 High Flow CAT CEL FIX!

link for mini-cats. www.bigdaddiesg...
link for CAT relearn procedure. "GM uses a two-part HEGO monitor. The first part of the HEGO monitor runs after idling the engine for two and a half minutes with the A/C and rear defroster on. This checks the O2 heater circuit. After this, turn the A/C and defroster off, then accelerate at half throttle to 55 mph and hold at a steady 55 mph for three minutes. This will complete the second half of the HEGO monitor that checks the responsiveness of the O2 sensors."
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[@fasnuf]

I believe HP Tuners does have these unlocked, but it requires sending the ECM to them and it's very expensive.

[@southfloridagearheads6504]

your probably right haven't looked into it much. won't be a cheap car to modify like the LS platform.

[@THESPICYMEATBALL93]

Bigdaddies sucks

[@emartinez4362]

Thanks for this. I got some high flow cats with the Big Daddies mini cats and I didn't have any luck, CEL came on within a few miles. If I clear codes and do this relearn think I may have some luck?

[@southfloridagearheads6504]

yes, send me an email and I will get you the relearn procedure. [e-mail]

[@2real4tv70]

What brand cats did you use?

[@outlawperformancegarage5211]

So did it end up working in long-term? Did the check engine light come back?

[@southfloridagearheads6504]

never came back.

[@ViperMods_216]

We need more c6 content js

[@southfloridagearheads6504]

I agree!

[@christiancruz3820]

How can I do the relearning procedure

[@southfloridagearheads6504]

@christiancruz3820 I have it in the video description. but if you want the full write up send me an email and I'll fwd it to you. [e-mail]