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Performance is as good as it gets with the tuned design, that didn't change. Improvements were made in the assembly. I'll be posting pictures after the first production runs passes QC.
There are different configurations for different applications. The headers we build for stock engines use 1.5" primaries and run 0.75-1.0bar boost. Headers for mildly modified engines (400whp) use 1.63" primaries and run 1.0-1.2bar boost. Custom headers are built to accommodate the engine mods, v-band turbos, twin waste gates, oversized secondary, etc. One build I recall put out 750whp. Recently built a set for a RUF BTR as well.
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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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