RG and I got my LC-1 installed without to much fan fare, running with the stock PCM, I'm almost surprised how lean the car runs stock, now the little digital display is going to not be as accurate as a log session since it changes so quickly, but I found the car just driving around, even with some stick in the 14.0's. Getting on the car hard I saw some 12.5's for a second, but it returned to the high 13's low 14's very quickly. My mileage seems to have gone down since the latest flash, and I assumed the stock cars were running richer to save the cat.

I have the sensor right before the cat on the highflow cat.

Any thoughts for those with the stock PCM and a wideband?

 

Sounds about right - you don't get into the 11s with stock PCM unless you are at WOT & above 4000 rpm .

 

I'm surprised the warmup shows lean also (14-15afr), but then again, the sensor might not be warmed up either at that point.

 

Yeah - it seems to stick around the 14.6 pretty much whenever you are off the gas.
are you running a piggyback Brillo ?

 

not at the moment, I have a int-X, but its not in now.

 

doesnt richer mean using more fuel? if so wouldnt you be getting worse mpg if you were richer? because its was adding more fuel?

ps after the latest flash my mpg went down too... a lot.....

 

sometimes richer means better mpg, it depends on the engine, also the afr, say if you go from a af/r of 15/1 to one of 13/1 your probably in most cases going to get better fuel economy at the 13/1 because of less detonation, and other reasons, some engines just run better with more fuel, rotaries are one of these