FWIW I reached out to BMS about options for myself given the following: No modifications except a piggy back and limited to 91 oct fuel.
Here is the response I received:
Thanks for reaching out.
Many are installing the JB4 on an otherwise stock car, no worries there. You would install the JB4 fully / normally, I'll include the install guide below for your reference.
91 octane, you'll likely need to stick with Map1, but data logs will confirm 100%.
Any other questions, let me know.
JB4:
https://burgertuning.com/products/s6...62035739&_ss=r
Guide:
https://www.jb4tuned.com/instruction...tall-Guide.pdf
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Best,
Burger Motorsports Sales
Basically I will get a 3psi bump and have data logs which will determine if there is more potential. Most likely I will be limited to map 1, which I am totally fine with, however this is essentially the same increase as RC less any capacity for data logging. IMO the additional cost makes the JB4 a safer option with the ability to expand later if desired.