i have done all of 518Ks how many should i do before letting it rip on a dyno.
Only other mods i am gonna do is Corksport SRI and TIP
HPFP for peace of mind
Magnaflow muffler for a deeper tone
CPE 60 duro REM
I don't wanna go the other bolt ons like DP etc it's just gonna be another $1100 of extra wheel spin.