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1) Coil packs (6 off) mounted at each spark plug - cracks / heat damage cause sparks to short to ground when wet.
2) Vacuum leaks are notoriously difficult to track down - best left to good Porsche workshop.
Start with #1 - coil packs much easier to see or replace.
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2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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