 I'm looking for causes of the lower numbers too. First and obvious would be boost leaks, next will be a compression test, then timing...... The first run was around 14.5 psi, the second run was about 14.7 or 14.9, and the last run was 15.5 psi. I don't dare go any higher on the boost settings. I want to find the missing HP that should go with these settings and see where I'll go from there. I forgot to include the A/F ratio on my chart, but it's running very rich (the dyno shop referred to my car as a crop duster). Better to be rich and tune in from there, than to be too lean and waiting for the *boom*. And get a boost guage as soon as possible :-) Good luck, Dave
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