[Jfrahm]

I would imagine that it would be easy enough to use a spare output from the VEMS to control the CEL to pass state inspections, or there are timer relays on Ebay for a few bucks (less than $2 straight from China) so the CEL inspection problem is IMO trivial.

A good standalone at a reasonable price is IMO a big step forward as you could get knock based boost control and loads of timing authority. With an electronic boost control, electronic DV you could disable boost due to significant knock events (tank of bad gas) or valet mode. Likewise water or water/methanol injection flow can be factored in.

One of the big issues with boosting the 968 or S2 is IMO the engine's sensitivity to fuel quality and environmental factors. There is little room for error on warm days under boost and the bores can get scuffed with little or no warning.

-Joel.