The K27s are not a bolt on as stated.
Have you tried replacing the K27 with your stock turbo to see how it all lines up? Doing that would eliminate the variation seen strictly caused by the K27 and may give you a better idea of what needs done.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
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