Problem:
A lot of people say the stock radio non nav unit sucks and does not have a good quality sound what so ever.
Solution:
TRICK 1: By having key on No.1 position (accessory only) turning on your radio. by pressing 1 and 6 together and by pressing the tune button you can switch the deck from LOUD OFF to LOUD ON. this will give you a little more bass from crappy radio quality.
TRICK 2: same thing key on no.1 position. turn radio unit off. BY pressing 1 and 4 together and double tap tune button you can change the deck setting to THROUGH MODE. which imo the best of them all. (1,2 double tap tune is SEDAN MODE; 1,3 double tap is WAGON MODE)
Notes:
-I didn't discover this hidden trick so all credit goes to the internet
https://www.youtube.com/watch?v=AnYFs6OpGGs
check out this video if my instruction isn't very clear.
Tested Compatibility:
- 11-14 WRX, Sti