[mustangivore]

1. How does the JB4 compare with PPK in terms of the burble (pop) exhaust note. I love it on my PPK but read somewhere that the JB4 has a fair amount too? Guessing BMS has not tuned it somehow as an option.

2. Really like the BMW PE but is it true that it does little for me in terms of running more powerful tunes/maps, since it's just a muffler exhaust upgrade? I run 93 all the time but map 2 may still be a bit much to run safely.

I've read some opinions/experiences based on these questions but would be interested to hear some more recent ones. Thanks.