i am wondering if i can run cobb stg 2 with a bigger tmic i have the one off of ebay? i want to do this because i got a etune from tdc tuning and only will boost to .7 bar when it used to go to 1.4 bar in 4-6th gear. i have no idea what is wrong with it right now. if i reset my ecu and reload my realtime map it will run fine for a couple of days then the boost will drop back down to .7 in all gears. i tightened everything down to make sure no leaks were happening and i dont hear anything leaking. if anyone knows what could be wrong please helps thanks dont have alot of time cuz i am deploying soon so would like to get this fixed.