
Originally Posted by
helix139
What headaches are you referring to, and how do you know this is related to cold start? All cold start does is run higher RPMs on start and heat the cats for emissions. It's not an OEM component protection safeguard such as (for example) knock sensitivity, overboost, underboost protection, etc. This sounds like something else entirely, and we don't really know if it's tune-related.
To the OP, try PMing Arin or calling up APR. I'm sure they'll take care of you. Also, have you tried using VCDS to pull codes? That could be revealing.
That's exactly my point. I know what it does smarty pants, I'm not like every other idiot in this thread spouting off that it's a DSG issue when the OP's car is MT.
However, cold start routines are there for a reason and the ECU does some fact checking each and every time to make sure everything is working properly, especially for emissions. If there is a problem and the ECU doesn't see the expected result, it could drop it into limp mode for the hell of it. Unless we know specifically what the specific problem list is for the ECU to kick into limp mode is, one could easily say a bad cat or bad O2 sensor could cause the same issue. If the cold start routine is taken away, this very well could happen. Problem why some aren't seeing it could be where they are geographically. APR is in Alabama. The guy with no issues is in Atlanta. Other's in Florida, etc. The cold start routine isn't that big a deal in a hotter climate, but in boonville cold frigid hell, it could cause issues. APR has no business playing with these basic startup and diagnostic routines no more than REVO playing with other things that APR blamed them for. Yes, I'm playing the finger pointing ha ha game here, but I do have a legitimate case. I also have personal experience with how picky an ECU can be when you have an O2 sensor issue. On a previous car, I had a sensor with a slow heater element in it. If the car was started cold and the revs weren't held a bit high to speed up the heating, the ECU would trip a code. If the car was restarted after it was up to temp, it would be fine without having to help with the additional exhaust heat generated by a higher idle. Also, a higher idle during cold conditions also serves to move oil through the engine at a higher flow rate than dead idle at 600 RPM. When an engine is cold, the oil needs a bit more help to circulate better, the additional RPMs from the cold start routine helps with this as well.
Bottom line, there's no reason to dick with this capability. The thought that they're saving you from the dreaded carbon buildup headache is not enough of a reason in my book.
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