EGR Delete, ARP studs, and while its torn apart new oil cooler. Also a 4" turbo back (CAT delete) exhaust w/ a straight through muffler will make it sound real nice! I am also a believer in Rev-X... after trying it.
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-Nick
2005 F250 Lariat; CC LB; 6.0 PSD; Edge CTS w/ PHP custom tunes; EGR Delete; ARP Studs; 4" Turbo Back (no Kitty) w/ 4" straight thru muffler; Rev-X; FICM programmer
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