SP Diesel sells a stage one and stage 2 version (10k mod). It really makes a big difference when combined with the big injectors and IDM mod. It's a must do. The stage 2 offers ajustments in both the ICP pressure and timing. It really is a good product.
I agree 100%...to go much further the HPOP will need an upgrade. Which is on it's way. These are pretty exciting times for the powerstroke pack. In a few months there will be rigs throwin' 600-650 to the wheels...maybe more.
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