Ok so I have a 2007 6.7L with 226k on the odometer tuned with an H&M’s Mini Maxx and a full get EGR delete and my ECM cooked a few weeks ago.
I had it replaced and ever since then my exhaust brake hasn’t worked my pressure sensor works fine and as far as I can tell.
The VGT is working OK it doesn’t feel sluggish.
Anyway I’m at a loss I’ve tried the return to stock and reinstall it at 12.5 volts the whole time twice and that did nothing.
Any help would be great
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