If I put this on my stock FD, will I already need an ECU upgrade or will the stock ECU be able to handle it ? (I will also have boos gauge and Koyo radiator installed).
Somewhere I read that Y-pipe alone brings boost up by 1psi and I guess the DP does the same and as far as I read, 12psi on stock ECU is bad news...

So what do you think ? Anyone with similar setup ?
I will be getting PFC later this year.

 

get a manual boost controller for about 30 bucks and you won't have to worry.. hell you could put a full exhaust, intake on it as long as you keep boost down and make sure fuel pressure is there....