so i was thinking about getting a vf39. this guy is selling it for 150. i know i would neeed some pink injectors and a new fuel pump. but any other suggestions, warning i should know about puttin this on my 06 wrx. i have turboback greddy exhaust new intake and cobb stage 2. i know they have a 39 map. is it any good? i would appreciate the feedback!
You can tune it with just the turbo on your totally stock car if you want. There's no MUST HAVE mods other than tuning. However, there is power to be gained by increasing the size of your intercooler and using a good downpipe. Also, some tuners recommend injectors and a fuel pump even for the VF39. It's better to not be fuel limited.