Join Date: Jan 2006
Location: Northern California
Thanked 2,636 Times in 2,125 Posts
iTrader Score: 0 reviews
Yes, stock air filter will flow enough for a stock engine. But the factory plastic filter box is too close to the heat of the turbo and notorious for cracking and not sealing correctly, which both lead to dust/debris making its way into the turbo/engine. Replacing the factory airbox with an aftermarket air filter system that still draws cold air from the fender is not a bad investment, even if you're not seeking more power.
'01 2500 Sport 4x4 5spd w/Fastcoolers, Mag-Hytec, EZ, RV275's, 4" w/o muffler, South Bend, Steering brace, aFe, 2 lo kit, Isspro Boost, FP, and EGT on pillar, Westach Trans/Diff temp gauge in dash pod, Raptor 100 w/ 1/2" line, Pac Brake, Rancho 9000, 285's