At the start of winter my supercharged S has been bogging alot and feels like its getting fuel cut. Ive been told that its cuz of the winter gas used in New England. But i also got a cel on saying its my second o2 sensor, but ive been told that when cars are tuned with the emanage blue they throw cel lights. But the way its bogging could it be that the o2 is shot? or is it just the gas?

 

secondary 02 sensor just makes sure your catylitic convertor is working, it shouldnt really effect the way the car runs...
it may be getting colder more dense air, which could result in you running lean... when does it bog down? in or out of boost?
what else is done to the car?

 

out of boost only in light cruising throttle it will do it every once in a while. i just have comptech exhaust and invidia test pipe

 

I had nightmare bogging/surging issues at idle and low rpms with my supercharger on emanage. Mostly around 2-3k rpms it would run crazy lean for no reason. We couldn't seem to tune it out.

It worked fine with the stock fmu but when I upgraded to emanage I had problems. I went through all the hoops and 'fixes' for surging from resetting the ecu, replacing O2 sensors, replacing MAP, testing TPS, cleaning injectors, replacing injectors....it makes me sick thinking about it.

My only solution was to switch to a standalone, which I realized I should have done in the first place.

Hopefully this isn't what you're going through and it's something simple.

 

emanage can not,well better put the stock ecu doesnt like when you adjust fuel for partial throttle.what you can try doing is changing the injector size till you get your a/f where you want it.

 

It was running mint all summer then it started to get cold and wasnt running good. I hope its a simple fix because we have no good tune shops in ct for s2k