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Rob 930 Rob 930 is offline
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Join Date: Dec 2002
Location: Seattle
Posts: 660
There's been lots of discussion over the years about the ideal plug for 930s. From what I know, the W3DPO (platinum) is too cold for even a track 930 with EFI. I'm running a W4CS (silver), which has often received acclaim. From my engine dyno tuning sessions, there was a vast improvement from the W3DPO to the W4CS, based on runability and from looking at the plugs. Of course this was for my engine (not yours!) and I don't know how "engine specific" this choice is. BTW, if anyone wants a set of 12 W3DPO plugs (with about 2 hours on them) I'll sell them for a fraction of what I paid for them!
Old 12-11-2006, 04:45 PM
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