I had a JB4 on my E90 and it was okay, definitely better than stock but it was too "safe" for me if that makes sense? LOTS of CEL because I only have access to 91ACN and didnt realize at the time how close I was to E85.
With that said, I'd definitely be willing to go the JB4 route, not against it, just dont want to put out $700+ for the JB4, EWG, and monitoring app just to spin the tires and not see any real results at Sonoma Raceway.
Would love to see how the JB+ goes.
I'm definitely getting the itch to go faster with the lack of rain and Sonoma's 2021 season around the corner.
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