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1. Mods were made but no additional tuning was done, and....
2. High boost (10 or so) on a PD blower, which is ALOT of boost and ALOT of torque at low Rpms, where the peak torque is on a dyno chart. I have been told by a couple VERY good and reputable tuners NOT to go over 8 psi on a PD blower because of the high boost and high torque at peak torque Rpms, and not to go over 11 psi on a centri LS3, but can creep up to 12 or so pretty safely on an L99 with stock cam since the cam is more of a restriction than on the LS3.
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It's all in the tuning and amount of fuel you have.
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No mods were done post tune and Car was tuned correctly and ran great for 17 months.
However The E-Force without JRE Fuel Mod(which didn't know about at time) was put on at another shop and tuned elsewhere a short time before all the other work on top end, fuel system mods etc was done at current shop. When they dynoed and street tuned it they said it had a bad tune and I was lucky. Who knows maybe the fuse had already been lit way back and that it took this long to blow. Again ran fine for quite awhile.Who knows? Oil under the Bridge now.
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I have seen many engine failures in my business and unfortunately a larger percentage have been on tweaked up E-Force equipped cars.
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Do you think it is because of the linear boost Have read somewhere here (and tried searching no luck) that guys were getting readings of 11-13+ lbs on top based on 3.25-3.0 pulleys or not modding the fuel feed system. (Have the JRE E-Force Fuel mod and 3.25) Thanks again guys.