anyone know anything about hp tuner for gm cars?
I have a question for an HP tuner guru or someone who knows/ has it
Pioneer Appradio 3
JBL ms8, JBL MS-A5001
PHD Studio neo 6.5s, PHD fb 1.1b
TC Sounds Epic 10
cream jean of sound 8======D~
refs: Lil_KB, jesusbasscadill, Crzy, Wkbdkid, bigwheel15, groggy23, kenbei, Belunt (awesomebox), Nissan, shallowfu, jonnybusa, alxmlr789, pioneerpimp, peas247, ravens9322, sundownz, audiobahnuser18, [email]firstname.lastname@example.org, jared530, brenTgrillzem, Revrider1