Finally got my wideband installed yesterday. Car is running at WOT 10.6-11.1
Should I expect about a 10hp gain from leaning it out?
Or should I leave it where it's at? Car is 29PSI on 93oct

 

Or could the car just have been tuned in the summer and now that it's cold it runs rich? Forgot to say that. Previous owner had it tuned. So no clue.

 

you shuold never tune a car during winter time ,
thats because , if you tune your car in summer time and you have a hot day , inlet temp is about 20 to 30 *Celsius , of its gets cold outside , the you can set the system på automaticly compensate , fore the cold air , with fule , so the engine wont spike ,

but if it is the opposit , and you tune your car when its cold and it get hot ,, outside in summer time , the management system cant handle that to compensate and you will spike the engine or hit a " boost " cut if you set that up ,

Tune the car in summer time ! nothing ealse

 

Strange, I've only heard the opposite ^

 

This is good information. Had Spike issue caused by tunning in winter....