Quote:
Originally Posted by tcubed
Just a heads up, expect to use 3x more DEF with the Kerma tune. I have to fill mine about every 2500 miles with the stage 1. Really like the tune though
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Make sure you fill it up completely. The passive tank transfers to the active tank via a pump while driving. So you may possibly be filling just 2.5 gallons instead of the full ~5gal.