Hi all.. i have just fit on a catless uppipe and i have fit on a 2.2k ohm resistor.. every looks fine. The turbo seem to spool up abit faster. but the only problem is its seem like it doesnt reach full boost even after 4k rpm. is there soemthing wrong or issit becos i to get it tune?

Current mod:

TBE
CATLESS UPPIPE
FILTER

hope someone help me.. thanks