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    2021 GMC AT4 6.2L

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Jethro71's Achievements


Enthusiast (2/11)



  1. I installed the Amp Research Power Steps as well. While they were easy to install and they work well, honestly, I'm a little disappointed in them. When they retract, they don't tuck up closely underneath the truck. I've seen them installed on Fords & Rams, and on those models they tuck up neatly under the rocker panel so that it's almost hard to tell where the truck stops and the step starts.
  2. I have been using a Pulsar LT since I bought my GMC AT4 6.2L back in May. When I installed the the Pulsar LT, I just velcroed it on top of my stock airbox where it has been just fine. However, recently I added a S&B CAI. Now I can't decide on the best way and place to mount the Pulsar LT. I currently have it zip tied to the intake tube, but I don't really like it there. Does anyone else have both a Pulsar LT and a S&B CAI? Where did you mount the Pulsar LT?
  3. So if the MAF relearns or re-calibrates itself after installation of an after market CAI, why can't it do the same with the GM performance intake? Why does the GM performance intake require a re-calibration?
  4. Aside from the fact that they won't, I get that, why wouldn't it make sense? Wouldn't the calibration be adjusting for a higher air flow over stock air flow? Even though a K&B or Roto Fab wouldn't be the exact same as the GM CAI, wouldn't it be closer to it than it would be to the stock?
  5. If I decided to install a S&B or Roto Fab CAI, would it be advantageous for me to take it to the dealer and have them do a MAF calibration on my truck as if I had purchased the GM performance intake?
  6. Noob here. I'm sorry if I'm not posting in the right place, but can anyone explain to me why the GM performance intake requires a calibration after installation, but none of the other after market CAIs from S&B, Roto Fab, etc. do not?
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