I got a chance to play with 89SE today, I've been running and tuning after all the tribulations of making right an improperly built engine with an improperly sized turbo.

Today I re-read Tracy's manual for EC-2 & EM-3 and started/warmed the engine. Then I bit the bullet and returned to the EM-2 default setting (Mode 1 power up). Just like I had intended in my last letter. I tried auto tune with the EM-3, but I had a steep slope on the EM-3 correction table graph. so I had no way to establish a safe state of mixture beyond ground running conditions.

Well it works a charm! I think it's flyable now. I taxied about and gunned it a few times. I feel a transition when injector staging occurs, and I could work on the low idle, but most of the taxi, run up and a brief blast of pre take off power all works well with the mixture knob at 12:00.

So I feel confident that 89SE can fly when the weather improves, and I get the rest of the fairings on.

I'll do some more tethered high power runs and take pictures of the EM-3 data page, and the dual manifold pressure gauge, then go home and make another RPM, Boost & fuel flow graph.

I'm collecting intercooler bits, with the intent that I'll have everything together to install it on the engine, and fiberglass up the inlet duct and sealed air exit. The only way I could control heat on the engine water and oil was by having the inlets & outlets of the heat exchangers be separate from each other, so I plan this also for the intercooler.