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  1. T

    2007 GMC Denali stalls after towing

    Yes. This. As someone temporarily living without cats the smell at stoplights can get pretty bad. Its not worth it.
  2. T

    2008 Yukon Denali, 135k miles, part 2!!

    MSRP is $520.. So not as bad as it could be. I'll be sure to post noise and smell notes. I'm wrong, this is as big as a single stock catalytic converter. I have some spare pipe. I'll need to get a flex pipe connector and a 3.5'' ID-ID connector. I'll weld this cat to the stock (and cut off)...
  3. T

    2008 Yukon Denali, 135k miles, part 2!!

    Its probably 1.5 times the volume of a stock ypipe cat, and higher flowing. I hope it works out!!
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    2008 Yukon Denali, 135k miles, part 2!!

    I have a vibrant 7835 3.5'' inlet short cat arriving. There is only so much room between the muffler and ypipe. I'd prefer to keep the stock muffler. I hope its not too far out from the stock location and gets hot enough to tone down the smell. I picked it up for $380 shipped so if it works...
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    2008 Yukon Denali, 135k miles, part 2!!

    I beat a dent in. It only rubs now on 1st gear launches. I'll dent more later but at least now it doesn't hit all the time. Driveshaft and sensor out. I used a regular hammer. The air hammer was too slow.
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    2008 Yukon Denali, 135k miles, part 2!!

    I put the resonator back on. It did in fact quiet things down a bit more so when driving. It's still loud FFS, bit not as bad. I really think adding a cat will make things perfect. Before After
  7. T

    2008 Yukon Denali, 135k miles, part 2!!

    I got an adapter to put the resonator back in. I need to quiet things down. I also got an O2 sensor bung and plug if denting body work doesnt work to clear the O2 sensor.
  8. T

    2008 Yukon Denali, 135k miles, part 2!!

    With no cats, long tube headers and stock muffler this thing is stupid loud. Cold start. Bad highway driving. Time to find a cat that will fit.
  9. T

    2008 Yukon Denali, 135k miles, part 2!!

    New flanges and sealant later. LOTS of sealant in here. It turns rock hard and brittle when hot. Neat stuff. Seal was good. A few heat cycles later and the headers werent as pretty. Ohh well. I had to tune out lots of codes. Still having issues with the drivers O2 hitting the under body...
  10. T

    2008 Yukon Denali, 135k miles, part 2!!

    I got some proper lap bands and some sealant. I'm going to fix this leak once in for all. Seriously, kit provided clamps won't work on the ypipe cross over connection. Partially because by design the driver's U pipe off the header bends still a bit as it enters the ypipe cross over. I still...
  11. T

    2008 Yukon Denali, 135k miles, part 2!!

    Question; I'm planning on welding in a cat right after the y-pipe adapter. Is this too far out to help with the smell? I know I'll still need to tune out the O2 codes.
  12. T

    2008 Yukon Denali, 135k miles, part 2!!

    Ahh ok. Thanks for the clarification.
  13. T

    2008 Yukon Denali, 135k miles, part 2!!

    Wait, do I need 3'' or 3.5''? Aren't all connections 3.5''?
  14. T

    2008 Yukon Denali, 135k miles, part 2!!

    I'm looking at this, very close. Thanks! https://www.amazon.com/gp/product/B073ZBF9L5/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
  15. T

    2008 Yukon Denali, 135k miles, part 2!!

    Thanks!
  16. T

    2008 Yukon Denali, 135k miles, part 2!!

    I checked still there. I used my hand to find where the exhaust is leaking. Any suggestions on better clamps?
  17. T

    2008 Yukon Denali, 135k miles, part 2!!

    I found a big exhaust leak off the driver's header. I'm sure that's what's making everything so loud. I'll fix tomorrow when it's not so damn hot out. I'm scoping out some catalytic converter options. $$$ Sigh.
  18. T

    05Single's virgin build thread. 03 tahoe

    The state bird is the mosquito.
  19. T

    2008 Yukon Denali, 135k miles, part 2!!

    We had a MASSIVE storm rolling in last night. Hail and tornadoes were reported. Sky turning green and all that with swirling. Sorry Yukon, the Lexus gets the garage. I did a marathon garage clean up and finishing of the bare essentials to get the Yukon rolling again. I was drenched with sweat...
  20. T

    2008 Yukon Denali, 135k miles, part 2!!

    I heard back from Speed Engineering. Turns out the 6.2 application is part of the "May require cutting and welding" warning. There is only the one adapter in the kit. No worries. Speed Engineering was responsive, helpful, and cheap!
  21. T

    2008 Yukon Denali, 135k miles, part 2!!

    I fired it up. Sounds pretty nasty. Hope not too loud. I think some of the sounds were from not tightening the bands enough. Stock muffler with resonator delete fwiw. I'll button things up here and there throughout the week.
  22. T

    2008 Yukon Denali, 135k miles, part 2!!

    I made my own from spare parts. No ragging on my welds.
  23. T

    2008 Yukon Denali, 135k miles, part 2!!

    Thats really smart to get the vbands. I also need to find a way to get a cat on. I'll still tune out the rear sensors but the environment, yo.
  24. T

    2008 Yukon Denali, 135k miles, part 2!!

    Nice work to you too! Trust me, it wasn't worth the pissed off wife.
  25. T

    2008 Yukon Denali, 135k miles, part 2!!

    Once I get the Yukon stable I'll do the other car. Long tubes and a tune on this is good for 500hp at the crank. Given my track record that should only take a few months....

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