98-20 Cummins Smeding Diesel T4 2nd Gen 3 PC Exhaust ManifoldSMEDING DIESEL T4 2ND GEN LOCATION 3 PC EXHAUST MANIFOLD THIS IS A T4 MANIFOLD, IT MUST BE USED WITH A T4 TURBO! HIGH DUCTILE IRON FOR SUPERIOR STRENGTH PRESSED HYDRAULIC JOINTS FOR LEAK FREE CONNECTION GUARANTEEING NO LEAKS AT ALL TEMPERATURE RANGES. HIGH DENSITY GREEN SAND CASTING MOLD FOR OPTIMAL PORT FLOW FOR PEAK PERFORMANCE CNC MACHINED SURFACES FOR TRUE FLATNESS ADDED GUSSETS FOR SUPERIOR STRENGTH.

Replaces factory exhaust feed system which is prone to leakage

Hot oil temperatures must be kept under control

Included are the necessary heavy duty 4-ply silicone couplers and stainless T-bolt clamps for an easy install

NOTE:  When in TapShifter mode

Spools the exact same as an OEM Duramax LBZ turbo

The BD Pressure Controller 's pressure increase is at its greatest during light throttle positions and ramps towards stock pressures as the pedal gets closer to full throttle when the extra pressure is no longer needed

recommended timing 17°-18°

as well as

Tow and Economy

on the track where racers put TrackTech fasteners through the most demanding conditions making these head studs the race-proven choice for your 5

Also included is one 1/8" NPT port which is provided for a sensor or water-methanol injection

Must use EFI/HP or H&S for additional transmission pressures