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  1. Jjdenali

    Headers and catless crossover

    They're great so far! Only problem I'm having is one of the slip joints leaks just a little bit and the clamp will go no tighter. I'm going to try a different style clamp but just haven't had the time.
  2. Jjdenali

    Headers and catless crossover

    I used a local guy Berry Pinney. $325.
  3. Jjdenali

    Headers and catless crossover

    I tuned them out.
  4. Jjdenali

    Headers and catless crossover

    Just after the crossover goes from 2 to 1 there's a flange. I cut the flange off of the old pipe and welded it to the new one. Bolted it up and was all done.
  5. Jjdenali

    Headers and catless crossover

    Here's a good cold start. I
  6. Jjdenali

    Headers and catless crossover

    Depends on your mods. I would say if you're going to stay mild with your mods 1 3/4 would be fine
  7. Jjdenali

    Headers and catless crossover

    Loud ! Lol
  8. Jjdenali

    Headers and catless crossover

    My neighbors already hate me lol I drive a loud duramax with a built motor and I've had it torn apart in the driveway many times lol I finished her headers and stuff about 4 am and started it lol cold starts are REALLY loud !
  9. Jjdenali

    Headers and catless crossover

    It depends if you want to lose the cats . Actually you'll have to either get the y pipe with the cats or without the headers won't work with the factory y pipe .
  10. Jjdenali

    Headers and catless crossover

  11. Jjdenali

    Headers and catless crossover

    The gaskets were still sealed . No signs of leaks believe it or not . You couldn't hear any either .
  12. Jjdenali

    Headers and catless crossover

    I did the 1 3/4 full length headers and catless crossover . Yes you have to weld the crossover to your existing exhaust . I was extremely satisfied with the fitment of quality .
  13. Jjdenali

    Headers and catless crossover

    Their kit fit great ! No clearance issues or anything ! Thanks for the suggestion! Less than $400 shipped with the bolts and the upgraded MLS gaskets !
  14. Jjdenali

    Headers and catless crossover

    Well they're installed . 8.5 hours total. It had 6 broken manifold bolts , 2 flush with the head . When my fiance wakes up and starts it in the morning I'm quite certain she's going to kill me lol it sounds badass , extremely loud but badass ! I haven't driven it yet but throttle response has...
  15. Jjdenali

    Headers and catless crossover

    I paid extra to get the multi layer steel gaskets. I've run headers on lots of small and big block chevys just not on an ls so I knew to get good gaskets. Changing header gaskets once they're installed really sucks.
  16. Jjdenali

    Headers and catless crossover

    I'm ordering 1 3/4 from speed engineering with the catless crossover. You can't beat $379.99 with the gaskets and bolts.
  17. Jjdenali

    Headers and catless crossover

    Oh OK
  18. Jjdenali

    Regearing my xfe tahoe

    I was happy to get 16.6 with our denali on vacation. 4500 miles with all 5 kids and a luggage rack on the back. Lol that's going through Mt Rushmore, Yellowstone, Grand Tetons, valley of fire, red rock Canyon, lake mead, hoover dam, Canyon lands national park, arches national park, BLM land...
  19. Jjdenali

    Headers and catless crossover

    They're definitely the most economical choice.
  20. Jjdenali

    Headers and catless crossover

    I looked at their long tubes and crossover last night. The only thing I didn't like was the fact the crossover has to be modified to work on my 6.2.
  21. Jjdenali

    Headers and catless crossover

    I planned on long tube.
  22. Jjdenali

    Regearing my xfe tahoe

    How has it affected your mileage?
  23. Jjdenali

    Headers and catless crossover

    OK cats are done and I don't want to replace them. I'm taking suggestions for short/long tube headers and a catless crossover. It'll be getting tuned without the cats. It's got factory exhaust except for a black widow race venom. Cai, coils and a good set of plug wires are the only other thing...
  24. Jjdenali

    Magniflow to quiet. Whats next?

    Black widow. No drone. Sounds bad ass under throttle.
  25. Jjdenali

    Black Widow muffler

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