Quote:
Originally Posted by Bmw doubles
Depends if you put the DV+ spring or the OEM spring.
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Quote:
Originally Posted by Bmw doubles
Then that's your CEL. the GFB page has a disclosure about using the stronger spring. Now you just need an elm327 wifi obdii and app of choice to clear codes.
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You have to install springs GFB is supplying with its DV+ and not OEM ones.
Only bigger spring under brass piston is optional and may be responsible for a soft error or CEL.
I've both springs installed on my car with no CEL nor soft error issue...
Best would be first to read what error code triggered the CEL before incrimining DV+...