i dont use sub exaust mod, but am using mtns full version with oh2, seems ok.
still get the odd ctd, dont know why?
i have 24gbs ddr3 1600hz ram, so not a ram issue.

hex core 3.2ghz i7 processor.
i dont know, have tried lots of different mod loadouts, but odd ctd still happens.
wish some kind person would intergrate properly oh2 and mtns, so rule out that issue.