01-04 Duramax 3.5" KBDP Turbo Horn Transmission Again MAD Electronics has done

Again MAD Electronics has done their homework on the protocol

or SCT (custom tuned)

5" bar and plate design that is larger than stock and outflows OE style tube and fin core designs by 36%

9L Cummins allows you to rev all the way up to 3000 or 4000 RPM without floating valves

Optimized compressor cover aerodynamics

01-04 Duramax 3.5" KBDP Turbo Horn Transmission Again MAD Electronics has done01 04. 5 Duramax LB7 This is the high flow 3. 5" Turbo horn for LB7 Duramax Adds 15+ Horsepower, faster spool up, lower egt's, more Turbo whistle. Stock horn is only 2 3 8", This is 3 1 2" that is a huge increase in airflow! Does not fit CA Smog Package Trucks without putting a small dent on the turbo horn Comes ready to install with new bolts! Cannot ship to California