Quote:
Originally Posted by LittleBlackDuck
I thought that a badly tuned Geo Metro was a 3 cylinder with cylinder de-activation (albeit randomly due to misfires) 
Jokes aside, that is how I would do it - randomly miss an injection cycle every 3-4 engine revolutions and cycle through which one was missed in the reverse of firing order. This would increase the load factor and slightly decrease fuel usage without much work. The lambda sensor will probably not be affected too much.
Simon |
The Ford engineers tried both rolling cylinder cut and cutting just one cylinder. The rolling cylinder cut permits more opportunity for cutting the cylinder(s) but at a higher cost.
No effect on Lambda sensor as, unlike an engine misfire, the exhaust gas composition doesn't change with the cylinder cut.