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Abdiel · 07-29-2011, 09:34 AM

switch back to your original filters (without ECU reset) and see if the mpg changes.

if mpg stays the same even with your original filters, it could be that the ECU is keeping a/f on the rich side for safety while it relearns (just a guess).

07-29-2011, 09:34 AM	#8 (permalink)
Abdiel Base Member Join Date: Jan 2009 Location: Detroit, MI Posts: 73 Drives: 09 G37S 6MT Rep Power: 16	switch back to your original filters (without ECU reset) and see if the mpg changes. if mpg stays the same even with your original filters, it could be that the ECU is keeping a/f on the rich side for safety while it relearns (just a guess).