Allan ... Good to have you advice and council. For monitoring fuel, I installed an air/fuel ratio gauge in place of the stopwatch that didn't work. It gets its measurement from of the oxygen sensor. With initial tesing (with a frozen throttle) with 5-6 psi of boost, it shows a lean conditions from 2K to 5K RPM then rich from 5K to 6.5K RPM. I plan to use the gauge to determine what type of enrichment I need. There are a couple of products on the market that "over drive" the EHA. At this early "proof of concept" stage, my acceleration timing tests indicated that the supercharger increased my horsepower from 174 to 195 at 6000 RPM. The Excel horespower program is described here. You can see my progress pictures here. Clinton has reported the identical problem as mine on his thread.

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Jim Villers
190SL, 230SL 5-speed, 95 E320 Wagon, 01 E320 Wagon, MGB, Boxster 'S', 190SL "Barn Find"