"The engine management computer may be altered or replaced. A throttle position sensor and its wiring may be added or replaced. A MAP sensor and its wiring may be added. Other existing sensors, excluding the stock air metering device, may be substituted for equivalent units."

My intent starting this thread is for us CIS guys to bounce around some ideas on how best to take advantage of the ECU rule.

A couple of points to consider:
True or False: CIS is a mechanical computer.
True or False: The new rule doesn't clarify mechanical vs. electrical.

So, IF CIS is a mechanical computer, where does the customization potential end? The fuel distributor is the mechanical computer. Is it legal to replace it with a home made unit?

Under the new rule, wouldn't updating CIS to CIS-E suddenly become legal? If so, would it be worth it?

An interesting page about the different CIS systems - done by a turbo guy, but still interesting:

http://home.comcast.net/~vwmikelvw/Tech/cise/cise.htmhttp://home.comcast.net/~vwmikelvw/Tech/cise/cise.htm

and another educational basic CIS explanation:

http://home.hiwaay.net/~langford/CIS.html

um, what was the saying, wheee