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rsrfan rsrfan is offline
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Join Date: Jun 2004
Location: Siesta Key, Florida
Posts: 1,236
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.

JP
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JP
86 930/4 tribute beasty
81 sc beach beater
55 Belair
40 Ford pickup
Old 12-12-2006, 09:17 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)