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  1. Better to replace spark plugs earlier than 100K if running a tune? Also, any better than OEM sparkplug options available?

    Hey guys, Livernois tune on a PB here. Just wondering if: 1) It's advantageous to change the spark plugs before the 100K interval? 2) Would Livernois or other members recommend just running the OEM plugs and the OEM recommended gap, or is there any upgrade potential or possibly a different...
  2. Anyone adding hubcentric wheel spacers to OEM wheels for a bit more aggressive look?

    I've done this (this = added hubcentric wheel spacers to OEM wheels) with past trucks and liked the look and suffered no downsides. Well, that's not entirely true as I definitely had a dirtier truck from the tires being out a bit. Not wanting the tires hanging out, but maybe just flush. Any...
  3. Can I fit 34.37" OD Tires on stock wheels on my '21 PB with no modifications? If not, what mods are needed? thx

    Hey guys/ gals, '21 Limited here and I've decided to keep her for a few years. This thing has the stock 22" wheels which really limits tire choices but I think I've found a tire that I'm pretty stoked on but I can't get a clar answer if it'll clear this truck, completely stock. The tires I'm...
  4. Anyone running an aftermarket airbox on their Powerboost?

    I just ordered the AFE Momentum GT with the dry filter (it's more restrictive but filters better) as I've had good experiences with this product in the past and I found one at a great price. Any input? Dyno charts, etc...? What gave me pause was the concern of noise, because frankly I'm really...
  5. Motor oil preference for the Powerboost for the self-maintenance guys?

    Hey there, I always change my own oil and service my own vehicles and typically use Amsoil, as I've had great luck with their products. I also like to order everything ahead of time and just have it on the shelf. Any specific warnings or advice regarding which oil to use? What about regarding...


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