[F30guy]

I usually run 89 octane, will I need to run 91 (highest here in CA) if I get a JB4 or JB+?

Can the JB+ clear codes if I get any? Or should I get the JB4? I want something simple

[rjd_F30]

Originally Posted by F30guy

I usually run 89 octane, will I need to run 91 (highest here in CA) if I get a JB4 or JB+?

Can the JB+ clear codes if I get any? Or should I get the JB4? I want something simple

You should definitely run 93 (91 in your case) with any sort of tune. JB+ cannot clear codes. If you want something simple get the JB+ or Dinan Sport. If you want a more encompassing features list, get the JB4.