Agreed Skaterbasist, the dyno itself looks to been erroring. I would have expected several pulls to be overlaid to show tolerance instead of one magic pull [or in this case, poor data pull]. If we ignore the spikes in the data, the torque curve looks fantastic; ruler flat and very good numbers in regard to rated engine output.
--->DDM; do you have the rest of the pulls that you did? Also, if that's not your dyno, they owe you clean error-free pulls! Also, did you do any datalogging to observe engine operation beyond roller numbers? Ignition timing, MAF, AFR, EGT, IAT, ECT, etc.?
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