ISX15 2350 non-VGT options

Discussion in 'Trucks [ Eighteen Wheelers ]' started by skman, Sep 30, 2023.

  1. skman

    skman Light Load Member

    Aug 26, 2013
    Need advice from guys with turbo knowledge/experience.
    I'm looking at having to replace my current turbo (seals) and wondering if I should keep the same or size up.
    Currently I'm running a BW s410 with 78mm wheel and 1.32 a/r.
    Was wondering about moving to an 80mm wheel and 1.45 a/r.
    I'm tuned to about 600 and pull gross weight about 150,000 pounds.
    My boost usually won't hit higher that 32lbs which is good. Tiny bit of lag off the start but not too bad. My EGT (post turbo) will hit about 950-1000 on hills before having to downshift. About 8-850 cruising on flat.
    Will increasing wheel size or a/r help any? Or should I just stick with what I have?
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