here is the FBO most run
heat exchanger (must even if stock and you dont want a tune)
Intercooler change (there is AMS and mishi generally it will drop charged air temps around 15 degrees)
Full Downpipe (catless)
Full free flowing exhaust
intakes (AMS or boosted 6) now ams just dropped a new...
best sounding exhaust, i wish it was available before i purchase armytrix 2 years ago
i love my armytrix exhaust with the valve control, especially cops pull us over for high Dbs
for sure
heat exchanger is first
AMS/CZP/Z1 all similar
catch can
intakes
lower down pipes or full
tune will make it really wake up
i swapped the factory oil from 0-w20 to 5-w30 motul right