Have finally had my vl with the sta blower tuned. Really happy with how it goes and the tuner had done a good job. But was disappointed with the final power figures. It made 210rwkw 740nm at 4750 with 8 pounds of boost and not alot of timing due to the inlet manifold temp being 90 degrees. I would have thought I would have been up near the 250kw at least. But over 4850 rpm the engine loses power and almost seems to pop out the exhaust or run out of puff and the valve train sounds harsh. Changing spark and fueling made no difference. It's a 294 duration cam 110 degrees separation. With 59tho lift at tdc. Can was dialed in at this. But have been told that I should have used the 110 deg separation method to dial up the cam. Any one have any ideas what could be going on? Would anti pump lifters help would cam timing cause this. Thanks alot in advance.
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