Join Date: Apr 1999
Location: Chugiak Alaska
Feedback Score: 0 reviews
I would avoid a 5 inch exhaust, they are overkill/cost more/harder to fit. For towing a 3 1/2 in downpipe to 4 in is best and will be all you need unless you are over 500 hp. Avoid the bigger is better hype. The stock early 99 air box is a true COLD AIR intake because it takes cold air from the driver side wheel well. Most all of the aftermarket Cold Air intakes take air for under the hood not really cold air. I ran a homemade Donaldson intake for years on my last truck (filter/ piece of 4 in exhaust/2 hose clamps) and it worked fine. You will hear the turbo a bit more with it and dirt cheap. The best air filter would be a AIS. Are you really sure you want to hear that turbo whining constantly for a 4 hr road trip?
Early 1999 F350 AUTO 4x4 CC LB DRW 4.10 6.0 trans cooler, Front hitch, 2,000 hubs/ brakes, Bilstein shocks/steering stabilizer, Diesel site coolant filter 203 thermostat, EBV delete, new O-rings, new Oil cooler, RIFF RAFF FRX, Glow plug led, Pillar gauges, Lighted cupholder, Painless wiring fuze block, Harpoon/hutch mods, Removed axle blocks. Air bags, 5 wheel hitch, In bed 7 pin plug. Spare tire key delete. KLHANSEN on speed dial. 75,000 as of May 2019