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Hi - new here - registered just for this thread.
Never tried - but I'm about to.. on my 6 inline 2 liter block.
I don't see the issues with deactivation, this is my train of thought:
* Must run on open loop mode - meaning no O2 feedback to ECU (my luck - '88 BMW 6-banger)
* Must alternate the cylinders fired and not fired - on average there is no issue in temp/oil/water/compression whatnot I've seen in this thread
* For best results - miss as many beats as you can to run wide open throttle at cruise - so I'm thinking of a dial which I basically can set the number of missed beats averaged over 6 cyl while keeping the car floored at cruising (3000 rpm) to set my required power output to keep steady. At WOT - I really don't think the non-fired cylinders are wasting a lot of energy - just a spring with air. They are actually required to keep the fuel metering system working in the proper range, the air flow meter.
* Disconnect the throttle cable from the AutoTrans to avoid downshifting - force TC lockup
* Throw in Shell Fuelsave or any one with special lubricants to keef friction losses minimum.
* Install a big red toggle switch in the middle of the dash - ON(SAVE)/OFF(GUZZLE) - instant back to normal operation, in case my wife wants a 'normal' car to drive in.
This probably requires tinkering with the MegaSquirt fuel injection computer & software, but by no means impossible I was just thinking.
How about that? Does this sound insane? I'm expecting 20-30% improvement based on IC efficiency charts.
Regards Joshua
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