thx bro 4gbanger i saw ur reply in owner club thread too.. tot open a new thread wud be better..
ok my car spec is actually juz l2 turbo engine upgraded with TD04, exhaust, fuel pump and tulang ikan aka diy boost controller, the rest mostly stick to stock.. the problem is.. as i mention in that thread, when i boosting 0.5 and push it to 0.9 i felt only slight different in power output.. dun feel like high boost.. installing a FPR can at least let me monitor my fuel pressure...