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Old 06-18-2009, 11:05 PM   #7 (permalink)
Join Date: Feb 2008
Location: maine
Posts: 758

oldscoob - '87 subaru wagon gl/dr
90 day: 47.06 mpg (US)
Thanks: 21
Thanked 18 Times in 14 Posts
changed air filter. it is getting more air, the ecu gives it more fuel to optimize. thrash it around in some dirt..or wait. a 99 should be quite fast after ecu reset. Waitng for it should not be happening. I would guess it knows it has more air to play with with new filter
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