Hey all!
the Microtech's DO NOT yet have closed loop control, hence their slightly higher fuel consumption... the Oxygen sensor input is just a real time A/F ratio meter, used for data logging etc. Spoke to Microtech here in Sydney, and they are currently developing a closed loop control for the ECU, so he's gonna let me know when its all ready to go.
Im sorry all, but i own an LT12 Microtech, and after having set it up about 3 weeks ago now myself, i went for a road tune the other nite with a friend in the passenger seat with the laptop. We were doing power runs ALL NIGHT, and data logging every run, pulling over & tuning, then flat stick again.... about 100km worth! with AF ratios sitting at 12.3:1 @ approx 8psi, exactly half a tank got us 150km. i know this coz we filled up b4 we went, then filled up on the way back.
bottom line... its not the computer, its the tuning/tuner. in my case, idle is perfect, and i can GUARANTEE than if anyone jumps in the car, they wont know its not a std ecu, smooth as. The initial rough setup IS exactly that... ROUGH!! mine didnt even like to idle, so remember, everything is on the very conservative side of the tuning. You may wonder "why does my car only do 200-250km off a tank?" You pay dyno tuners by the hour, and if u dont, and they sell u the ecu in "installed and tuned" form, they wont finetune things like cold start, perfectly smooth off boost control etc
yes, u do get what u pay for... i have set up a Motec M800, and its a fine piece of gear... so i know what true quality is.
I much prefer the Microtech's options over a Power FC, especially datalogging which is invaluable.
Something to think about: my car with the std ecu was at about 10.8:1 A/F ratio at 8psi, so how can it possibly burn less fuel than a much leaner Microtech @ same boost and 12.3:1?? its the off boost thats more often than not to blame for the poor economy
only my experience,
ciao
Jono