Couple of quick questions. Since u have probed for boost pre turbo, unbolt everything from the downpipe and see what changes. You have cats? Surely not.
I wonder if it's how the banks are brought together pre turbo.
Just trying to brainstorm cheap help options first.
2014 GMC CC Z71, 2009 C6 vette (57x/53x at the wheel and less than 3300lbs)
2010 Camaro 2ss/rs---SOLD 4/15/14
-654whp with a few cosmetic things, Pfadt suspension, Vortech, CircleD, GPI ss3 vvt bump stick, gears, stuff in between,18" TSW N'rings for drag duty, 20" Forgestar F14s for street.
rhino@ Gwatney Chevrolet/GPI Jacksonville AR
TCAudio in Benton AR