Quote:
Originally Posted by suspectnumber961
Strict A-B testing would give erroneous results due to ECU adjustments over time.
IF I continue to see an avg gain of 2 mpg over time...even in cooler weather...I say it's case closed. I'd even settle for 1 mpg.
Will be interesting to see if anyone actually tries this...I'd recommend a Focus....similar year.
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I'll go trade the wrx for a fucus tomorrow......
not! Replaced stock panel filter with the k&n replacement on the wrx and while i know the mileage has not improved, what i do know for sure is that i have increased the service interval to prob at least 50k miles. That makes it worth the trouble and expense. Sort of klike why i use synthetic lubes...reduced servicing is a great thing.