Jb4 and high flow primary cats

Posjr408

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Here's where I am at right now.

2022 GT1
Jb4 map 2 & 5
Secondary cat deletes
Mbrp cat back
Hks plugs at .022
Aem intakes
275 toyo proxes.

Waiting to install. Ngt High flow primary downpipe and wagner fmic, ewg harness, hks BOV

I'm seeing mix comments that I can use high flow cats with jb4. Can I get some clarification if this is true. Also want to add WMI injection in the near future. Should I be considering lap3 now? I mainly run 91 but pump 101 when I'm in the mood
 
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