it started running rich above 3k rpms a few months ago, shortly after installing some Venom 720's. it kept getting worse as time passed. then about 2 weeks ago it quit idleing. put my stock secondaries back in and still runs rich but not near as bad. still doesn't idle. runs smooth down to about 1k rpms. if i try to go any lower the revs drop as if i turned the key off.
also noticed driving today the the twin scroll activates at only 4psi when it's below 2500 and between 2500 and 2800 it activates at 2psi. above 2800 the twin scroll is activated like it is supposed to be. if memory serves, twin scroll activates at 2800 or 7-8psi whichever comes first.

replaced O2 and spark plugs
checked sensors via FSM
AFM
AIT
TPS
BAC



also did a propane intake leak test. all vacuum lines are intact as well.


i'm confused.