Today i installed the obx lt on my denali ,i can not evaluate the material quality today but with in a week of driving i can ,the only mod i done is the y pipe ,i had welded the y pipe connections due to the bad quality of the obx clamb and know it is very similar to the stock y pipe one piece i think it will be a good mod ,easy to remove + avoiding to any air leak in future but what i noticed that the y pipe is very close to the trans oil pan i have not noticed the stock one is the same or not so i think that i might need to even wrap the y pipe or get a heat shield in between ,the obx install instruction was saying that i need to extend the o2 sensor wires but when i fix the headers i did not need to extend them ,at the end iknow some guys well say ok have you feel any difference and yes there is a lot of diffrence in taking off or cruising and the sound was great not too much loud and still i need to retune after the lt headers (pics commimg soon)

 

can you get pics of them on the denali?
i show a co-worker of mine the pics that another member here had taken but i would like to show hime yours since he has a tahoe and your suv is somewhat similiar.

 

You need to remove 100% stock in your sig.

 

can you get some pics up of the install plz? I have a few friends that want some headers and will be directing them towards this....

and some advice, don't get the 1900, it's not all its out to be.. i wish I spent my cash and waited for a 2300

 

 

looking good! were there any problems with the install? Anything touching or hitting?? how about the SOTP dyno?

 

There was no major problems with intaling but the the y pipe clamps i received were not good enough to stop leak so i weld the y pipe and it became one piece easy to remove in future ,no hitting just the second spark plug wire head on driver side is touching the header pipe i am going to wrap it thats all ,dyno i did not dyno yet but i had retune after the lt .

 

I feel that, my best friend went with 1900 maggie and add GT2-3 cam and DT longtube headers then we add 2.8 pully to get 10 PSI, with the all mentioned modifications he still can beat my Denali with Paxton supercharge with 7 psi !!

I think the TVS 2300 is the way to go

 

those look like the newest version, with out the crazy hump on the driver's side. SWEET> I was trying to get that version when I got mine.

 

Did you happen to get the collector and primary sizes? Would be helpful thanx