Rocket yes We are a dealer for Dynatech. Email Dragon at
sales@hummercustoms.com but, have had some problems with site and webmaster is working on it some.
Use in place
sales@motorsportsauthority.com or just PM Dragon and let me know if You do not get through. Just tell him I sent You and You are forum member. We will get you help one way or another.
We carry this brand because of some racers and a performance exhaust shop in our area that tunes exhaust for street 10 to 11 second cars to some real fast turbo'd rice rockets. Everyone of them loved them even dirt track guys.
When I looked at mufflers I had been a magnaflow guy and then i put flowmaster on My H2 at performance exhaust shop recommendation and I loved them, will run nothing else. They sold all brands of performance mufflers. Performance Exhaust shop kept messing with pipe size different mufflers and as We changed one week I would run G-Tech Pro to see if it helped. If not they had Me to change till He felt they had tuned the exhaust as best they could.
He told me each H2 they have done just like same model of 2 or 3 other cars would be different. He said My rig was the most agressive he had gone but, I did not have supercharger on yet but i had it programmed to max and other stuff.
Dynatech made us an official install center so if anyone is traveling on I-40 by Conway We should be able to help if your having trouble.
I recommend the long kneck headers as it helps low end extremely well compared to some others we have seen. If You go the complete header Catback system with 2 true flowmaster super 40's it is real deep and muscle car sounding and can feel it with no tuning yet especially. Regular 40's are good and if you want softer sound 50's are good but, You will get a little difference in performance out of all of them. Super 40's are less restrictive than 40's or 50's. On the super 40's or 40's do not let a performance exhaust shop talk you into turning the tailpipe down in front of rear axle, make them go over axle. Reverb will shake your guts to jelly but, just get it over the axle and it is gone. I had them stop them short of bumper and tucked up high like stock. In front of axle just let's reverb come inside to much. My performance exhaust shop charged no extra to help me and then they helped me get exhaust setup for supercharger and bungs for wideband sensors for real tight air/fuel tuning. Then We sent them out to be Jet Hot chromed look headers to tail pipe so they had to be right. I have 2 21/2" pipes over axle and they are true duels. With duel setup if You have air suspension make sure they stack tail pipe to give You a 1/2 to 1" clearance and get them to weld a thin flat metal plate on air pump tray right in middle up close behind of bumper. Just precaution to keep heat from getting to the plastic air tank resovoir in a bind. Easy for them to do and should do it for free.
Let me know if i can be more help. Plus check with Jason and see if he carries them. I would not want to sell something Jason has.
TAZ