Okay - I've been on the fence on this question, able to see both sides as reasonable. Or maybe, unable to see either side as compelling.
My initial thought was that the vacuum line was over the line, so to speak. However, I think the gauge/wiring argument IS sound: We accept drilling holes, running wires, adding brackets, hell - even tie wraps, as acceptable means to accomplish allowed modifications all the time.
However, regarding...
...Only the stock (unmodified) OEM ECU connection to the wiring harness may be used. ...[/b]
This is a case of the damned "specifying what we CAN do" trap. I'm afraid that I don't buy Bill's contention that this prohibits the VACUUM connection, since all the bold bits talks about is the wiring harness. It doesn't say - or doesn't necessarily say - that the stock wiring harness is the only connection allowed. I take it to mean that the only connection to the wiring harness must be as stock.
What's the line? "You can't put too much water in the nuclear reactor!"
If I take my initial read of that line, it's restricting my electrical connection to the ECU but specifically NOT excluding additional OTHER connections.
Yeah, it's a moot point from here on but it's a great case study.
At the end of the day? It's about enforcement and not the rules. And enforcement requires protests and they are rare. That's the end of the story - for now.
In terms of changing the culture, we're going to be in touch with Beran Peter before the ARRC next year, ask if he's coming, and ask if he wants us to point out the problems that were visible on his car THIS year. If he says, "yes," then we will. If he declines, then we face a decision but we won't assume that post-race tech will take visible illegalities into consideration. That was first-ARRC naiveté at work.
An open-hood, on-jackstand "parc exposé" in impound would help a lot, I think. The idea of a "class rep" or something similar might work too but that would require a lot of buy-in, to avoid that person becoming a Nazi and/or pariah - even if he/she is just a messenger for questions or concerns. I like the idea of everyone in a class putting an issue in a hat, then someone draws the "issue du jour" and EVERYONE gets checked for that, by everyone else in the class en masse. But again, everyone needs to want it.
Cultural/organizational change is very hard, particularly when there are strong incentives for being a member of the culture as it currently exists. If a core group of drivers in a class were to implement any of the above ideas, and full-on ostracize anyone who didn't play, there could be movement. Peer pressure is always powerful.
K