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#1
07-11-2007, 12:34 AM
Hummer Veteran
Join Date: Nov 2006
Location: Louisiana / DFW
Posts: 80
Re: Dynatec long tube headers
installed easy enough, some of the hardware on the flanges have a tendancy to back off and leak and rattle. I guess you could replace the nuts with some lockers, or have it welded up.
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2007 SUV LUX All-Terrain Blue
Polished Radix Magnacharger; 2.8" pulley; Tuned by HESCO; Custom 4L80E "Raptor" by PACT
GM 2500HD Efans on SPAL controler; K&N filter element; Dynatech Headers + Cats; Magnaflow cat-back
37" Kumho Road Venture MT KL71 on 24" ZINIK Mazotti
Pioneer AVIC-Z1 HDD navigation; 2 x 12" JL W6; Custom Box w/ Lights 
#2
07-11-2007, 08:12 AM
Hummer Authority
Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
Re: Dynatec long tube headers
I have complete Dynatec header catback system since 2005 and have had no trouble.
I like them allot.
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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