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About MNorby

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    2015 Silverado 2500hd CCSB 6.0 4x4 White

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  1. On my last truck (2008 GMC 2500 6.0) and this truck (2015 Chevrolet 2500 6.0) I kinda always wanted to remove the monster factory muffler and give the truck a little tone. I read some feedback and ended up with a Magnaflow 12909 3.5" muffler. After receiving I noticed the offset isn't the same as the factory muffler and wouldn't be a direct install unless you don't mind the muffler sitting in the truck at and angle to meet up to the existing exhaust. What I did notice was the factory pipe from the flange just in front of the muffler dropped down a few inches and if that were a straight section it would make the muffler offset perfect to reach the tailpipe section. I cut the pip as close to the rear of the factory muffler and unbolted the flange. I cut the welds on the factory ball flange and the hangers to make a new intermediate pipe that will be straight. I picked up a length of 3.5" exhaust pipe from a local exhaust shop and mocked up the muffler and flange and built the new pipe. With this pipe the muffler, intermediate pipe, and tailpipe were all level with the truck. With it all installed time to try it out. At idle the truck sounded great, not really any louder that stock but a deep rumble sound. Where I started to question it was driving, I would get a drone around 1600-1700 rpm that wasn't terribly loud but enough I noticed I turned the radio up a little more than normal. Above that and north of 2000 rpm it was fairly quiet in the cab and sounded great. A friend listened outside and said it wasn't obnoxiously loud but you could tell it wasn't stock and had a great deep tone to it. I tried it for a week and finally decided the drone area, especially when towing my rock crawler, was just more than I wanted to listen too on long trips so finally just put the factory muffler back in. No one else in the 2500/3500 section really mentions drone with the muffler but I did find a guy with a 1500 6.2 truck that tried and and removed because of drone. Maybe it has to do with my blackbear tune and something going on in that range differently that the others guys here. I had to grab another factory intermediate pipe since I had cut mine up for the flanges and hangers. A buddy bought the magnaflow muffler for his ram 2500 6.4 truck but I have this straight intermediate pipe left over I thought I would sell to someone else that might want to try a different muffler with a cleaner install. Pipe is 36.5" long from face of flange to end of pipe and you can see in the last pictures where the weld was and how much fit inside the muffler. PM me if you are interested. And now for the pictures: The factory intermediate pipe with the drop down near the flange: Cut the flange and hangers off the factory pipe: Muffler and new intermediate pipe: New muffler installed: Leftover intermediate pipe for sale after cutting muffler off:
  2. Bully dog is a rip off

    No experience with them but with my old 08 2500 6.0 truck I did the diablo/lew tune. With the canned Diablo tune you install first I noticed no real change, the custom tune didn't feel like any more power but much better shifting. On my 2015 2500 6.0 truck I am doing a Black Bear tune, I just sent in my data log yesterday so waiting for the return tune so I can try it. From all my reading a canned tune for these gassers really doesn't equate to much, you need to get the custom tune from Diablew or Black Bear.
  3. Seems I have ready somewhere that you get .2" per turn of the bolt on the torsion key. I turned mine 7 turns and still have a slight rake to it.
  4. Well if anyone is searching and come across this thread my 2015 Silverado 2500HD crew cab short box 4x4 6.0 truck with a full tank of fuel, fabric tonneau cover and swing case toolbox with a few small items (150 lbs for tonneau and toolbox I bet) weighs 6860 total. 3820 on the front and 3040 on the rear. I use these weights to get tire pressure ballpark'd.
  5. Been there. I tow a rock buggy on a custom trailer that's about 6k lbs plus about 1k lbs in the bed of the truck on trips. Got rid of my 2008 GMC 2500 6.0 thinking it was way more truck than I really needed and tried a 2013 ecoboost. While the ecoboost super crew was nice I found the temp gauge had a 30 degree dead spot programmed in and while towing up a hill the truck would hit 235+ and the gauge never moved. Oil pressure gauge is just a 7 psi switch. Had to repair something almost weekly. Only had that POS for 3 months and got back into a 2015 silverado 2500 6.0 truck and never regret it. I don't need to use the equalizer bars, I feel stable on the interstate at 85 mph, the gauges actually mean something (granted water temp runs about 210 on the dash but the scan tool indicates more like 195-200). I think the Fords are just dumbed down too much for the typical ford owner/driver...... Good choice on the replacement.
  6. Have no input but in for updates. MAybe post on performancetrucks as you might get more tuner oriented folks there too.
  7. In to follow for future updates. Thanks for sharing.
  8. nothing that I have seen yet externally.
  9. probably won't get too many replies in the 2500/3500 section were there are no 5.3s used.
  10. The tire shop should have the tool to do the learn. Its only like $20 or so on amazon. The older trucks you could do a procedure of putting into program more and inflate/deflate tires in certain order to relearn but the newer models require the tool.
  11. I reused my factory sensors and installed them on new valve stems in my aftermarket wheels. Either keep track of which factory wheel was in what position with each sensor or you will need to do a relearn on the sensors so the truck know which wheel is where.
  12. I haven't posted here but I enjoy following. Please keep up the updates. Thats my next thing is to figure out if I want to go with a Diablo/lew again or just get HP Tuners and start doing myself, and tweeking the rock crawler, and all my friends crawlers with LS engines.
  13. I use the billet grill kit from ebay. Not sold on the main grill cover, might plastidip the chrome behind it black so it disappears better. I modified the bumper one to fit a light bar mount.
  14. I've got the bulbs with the little projectors in the end. They help but don't work near as well as the same projector style bulb I had in my 08. Not sure if it is the lens or because of the different sized bulb.
  15. I have seen places that sell the spacers and bolts as a kit but shouldn't be to hard to make it yourself from spacers at the hardware store. Looks like the kits are typically 3/4".

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