For the record I am not a Tabby hater !!
Originally Posted by
tabetha
Closed loop is not going to allow the max power or the max mpg,
I think you/me everyone maybe being confused by the term "closed loop".
If we are talking strictly narrow band sensors used for light load trim where max power inst what we are after then you are wrong !
We use it for mpg.
On modern cars that use wideband closed loop .I.E. Target AFR then the loop is used to ensure proper AFR as required by the target map which could be for economy or power as dictated by the tuner's strategy.
Originally Posted by
tabetha
... but others may need it as they can't map correctly, mine went in the bin, vastly better without it.
tabetha
Sounds like you dont understand the way ecu's work and/or proper mapping procedures.
You set up an engine TOTALLY without any form of closed loop
(I exclude auto tuning single cell point mapping in this argument)
Then once you are happy with everything, you enable closed loop to look after things.
Providing its mapped correctly in the first place, you wont see a difference except that fuel consumption may be optimised while the engine wears over its life.
