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rsrfan rsrfan is offline
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Join Date: Jun 2004
Location: Las Vegas, Nevada and San Diego, CA
Posts: 1,234
For what its worth, I am running the Bosch W4CS plug at Geoffrey from the rennlists recommendation. My turbo has mild mods and does not see track time. After the change from the W3DPO plugs, I have seen much less plug fouling and the engine appears to run and accelerate smoother.

86 930/4 tribute beasty
81 sc beach beater
89 targa black betty
Old 12-12-2006, 09:17 AM
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