Micra ECU and tuning

[wehey]

Hiya all.
I have a question whirling around my brain that im sure someone will know the answer too.

I am currently messing around/tuning a single cylinder motorcycle engine. I am have fitted an AFR gauge and am learning that when you change anything on the engine ie increase airflow in and out of the engine you have to re-jet the carb to ensure the mixture is spot on.

So back to the Micra. With so many strap on mods available like restricted exhausts and manifolds, air box mods, fitting 1.3 cams into 1.0 etc etc etc does the Micra ecu sense that things have changed and automatically adjust the fuel rate/mixture or are us modders running around in cars running dangerously weak fuel/air mixtures???

 

[Belly93]

It should adjust the fuelling on the injection models as it will pick up the air flow rate from sensors and change the amount of fuel fed into the engine but only to a point i would imagine hence needing to use aftermarket ecu and mapping on turbo or heavilly modded/ tuned cars

 

[frank]

yes, it self adjusts when running closed loop (to a degree)

 

[wehey]

yes, it self adjusts when running closed loop (to a degree)

Thanks fellas................what does closed and open loop actually mean??

 

[pollyp]

http://wiki.answers.com/Q/What_is_the_difference_between_Open_loop_vs_closed_loop_fuel_system