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| The DDEC system can hold up to 4 different hp settings in the ecm which can be selected only with a service tool which a dealer or dist. would have. Second your max torque range is around 1550-1650 rpms, not 1200-1400 rpms. Just like the old 2-strokes keep it wound out for better performance. Boost pressure is going to max out around 32 psi measured at the intake manifold. You need to check to see if you have a 1800 or 2100 rpm engine. Also have the check the droop setting in the ecm, they are set at 150 from the factory. Try moving the droop to 0 as it usually makes a difference. If you do not care about fuel mileage have all the injector calibration codes changed to 75, this will add about 20 rear wheel hp on a healthy motor. I know these engine very well so if you have more questions let me know. Thanks | |
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Detroit 12.7 pulling ability?
