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What did your AFRs do when the engine starts running badly?
Heat can cause aging electrical components such as relays to momentarily fail. If one of your fuel pump relays is affected that would do it.
You might check all the aging electrical components as racing is a tough environment.
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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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