Megasquirt Progress, Main Board complete Options

[yarin]

According to MS and other sources a long map tube is perfeclty OK. The only reason I could see for moving the map to the board is to avoid kinks in the hose. There is no delay or inaccuracies related to the length of the hose. Quote from the MS site.

QUOTE

Don't worry about how long your MAP sensor vacuum hose is. Intuitively it seems that shorter should be better. However, a few people have done tests to see how bad the effect of a long hose was on vacuum signal propagation. With a ~100 foot (~30 meters) coil of rubber tubing in between the MegaSquirt and the engine, the result was that no delay was apparent. This was with about a 10 millisecond resolution clock. The reason for this is that air has so little inertia that it moves very quickly in response to a vacuum (this is how we fill the cylinders, after all!).

After all, if Porsche used the same technique on their cars its good enough for me. (at least they did on my brother's 89' 944 turbo)

Exactly where is the stock firewall hole? Is it below the engine tin? Thanks

[lapuwali]

Yes, it's next to where the shift linkage goes through. That rubber tube thing holds the stock harness.