OK, thanks, Eddy. I guess I need to find a manual on the lockup torque converter transmission to understand it a little better.

Charlie will chuckle at this bonehead move..... I've been getting some ragged feelings from the engine at times - particularly on decelleration - and finally remembered that when the S/C ate its rotor bearings and trashed the other engine, I was in the process of running AutoTune - which I had closed and saved with dramatically altered VE table values - due to aluminum powder hitting the o2 sensor, I suppose.

Since this engine has been installed, fuel mileage has been rather bad at around 15mpg. I was beginning to think that the head shim and lack of quench was causing poor fuel burn and that I needed to change back to a hotter spark plug.

Today, I suddenly remembered the VE table, grabbed the laptop and went for a ride to the machine shop with AutoTune running. Along the way, I saw controller adjustments that were hitting the upper and lower correction authority stops at up to +/- 40% while adjusting to AFR table values. <img src="/forums/images/graemlins/scared.gif" alt="" /> From what was a terrible VE table that looked like the Swiss Alps, I now nearly have a good-looking table again. A couple more trips should do it. <img src="/forums/images/graemlins/kewl.gif" alt="" />

Frank