Originally Posted by
SteveH
(so bloody helpful stu, thanks again)
Very kind, thanks, your welcome.
1) it keeps the AFR to Lambda 1 all the time, or whatever you set it at, slightly rich, lean, whatever you want. (I thought this is what closed loop is for)
"Closed loop" simply means that its a self correcting circuit that constantly monitors and corrects in a loop. IE: Read/correct/read/correct.
ALL ECU's of the past 16 years do this as standard and many use wideband to allow them to do it outside of stoich. (Even if Tabs doesnt believe me. lol) In fact, some even utilise EGT as well.
2) Using knock sensors, adjust the spark advance constantly to get an optimum power from the engine.
Around 65% of ECU's since 1998 have done this as standard. Its called adaptive spark lead. BMW/Siemens are about best at it IMO.
Even aftermarket stuff like Pectel T6 has such features.
Its old technology im afraid. Sorry.
