Re: Headers....
What I run and will run on any other Hummer I own you could maybe say any brand I drive is as follows:
Dynatech stainless long kneck headers
Dynatech stainless catback system
Dual pipe running off catbacks also running crossover pipes
Next I would use 2 Flowmaster super 40's tied in one in each pipe runs. The 40's fit standing side by side in the spot where OEM muffler would be.
Lastly I then run tailpipe over axle right where the factory tailpipe go over axle and stop them up high right at same level of factory so as not to interfer with off road.
I make these recomendations because my performance exhaust shop helped me design exhaust then they built it. It has been on my rig for 4 years.
TAZ
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05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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