Compression Ignition Addict
Join Date: Oct 2011
Location: Chico, California
Thanked 254 Times in 245 Posts
Mentioned: 13 Post(s)
Quoted: 283 Post(s)
Feedback Score: 0 reviews
the major restriction in the stock exhaust is the muffler , the downpipe is second, it is only about 3 inches.
a 4 inch system has a straight through muffle or straight pipe and larger 4 inch downpipe, so no restriction.
4 inch diamond eye straight pipe is 230 from alligator performance hard to beat it.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
99.5 f250 7.3 4x4 265k Full Force 160/30, PHP Hydra, S&B CAI, 4" Exhaust, Van Turbo, RR 6/6 Billet Wheel, Autometer Gauges, Transgo Tugger, Non-Ebpv Pedestal, 08 Tow Mirrors, Trucool Max.
Dad-2000 F250 7.3 4x4 114k Autometer Gauges, Superchips 1705 (Tow Safe), Blue 6637, 4" Exhaust, BD Billet Wheel, Trucool Max.