I have a 02 wrx with a full greedy exhaust and have a nice 92 octane tune its a stage 2 car. I am wondering what the best route for upgrade would be. vf39?, size injectors a sti size intercooler any thing else would help?
You can go with STi pinks (injectors) and the STi TMIC. That will get you where you need fuel/mods wise to support that VF turbo. I would also recommend the STi up pipe or aftermarket as well since yours is restricting. You could even go EWG to really free up a few ponies.
So, my recommendation -
Up Pipe or EWG
3-port Boost Control Solenoid
2007 WRX TR | Stage 2 | PAR Gearset (Built by AndrewTech)