Most of what I’ve read on here indicates the 14.6L 3406s don’t spool the 175963 very well.
A waste gated turbo like the 175963 spools up great on any of our 3406 motors. To run our old truck in California CARB requires us to pass the strictest emissions testing in the nation.
We applied and CARB requested that we install a sealed Smoke Opacity recorder on-board our 5DS motor for 30 days or 2000 miles. We were under no obligation and this was just to determine if the DPF manufactures huge new 600 HP rated DPF (filter) could be a viable emissions solution for the 5DS 966 cubic inch motor. The on-board tester was completely paid for by the DPF manufacture.
The opacity test results on the recorder were 25% under what their baseline was and we passed the test with no problem. The results gave us a green light to install the DPF on the 1998 379 long hood Peterbilt. After that the ARB evaluates and approves the DPFs to meet specific particulate matter or nitrogen oxide emission reductions.
I was skeptical as hell that the somewhat restricted exhaust flow in the DPF would give us any kind of fuel mileage or horsepower. I was wrong on both counts. No loss in fuel mileage and only a little top end loss which was acceptable. To my knowledge we have the only 5DS 3406 motor in California that's CARB certified.
The electronics, hardware and installation of the DPF is normally about 20K, the let me off for 16K. We run in California a lot although we are based in Nevada so the 16K beat buying a new heavy haul weed burner DEF truck for nearly 175K..
I can't believe how clean the dual exhaust pipes are with absolutely zero loss in fuel mileage. And we are still using the BW 175963 waste gate turbo...