[tylers1027]

Hi All - I've been trying to lookup prior threads about the comparison but had just a couple quick questions. I have a 2022 330I and have been running the JB+ @ around +3.5psi for about 30,000 miles now.

1) Is it worth it to upgrade to the JB4 if I'm not planning on running E85 or anything? I'm looking for something more set it and forget it; not something have to do frequent data logging etc.

2) I always run shell 93octane; is that sufficient for map 2 (+4psi)?

3) With the JB+; bottom range torque is great but power kindof falls flat at high RPM's. If I've read correctly; the JB4 seems to increase the top end power a bit over JB+?

FYI here are my mod list.
Active Autoworke catted downpipe
M-Performance catback exhaust
Armaspeed cold air intake
FTP Chargepipe
JB+

[mike@x-ph.com]

you will get the same power and delivery for your setup.

the Jb4 lets you fine-tune it with boost by RPM, and allows better traction with boost by gear.