This is my 2nd WRX, used to own a bugeye 02 WRX but was rear ended and my car was considered totaled. Anyway, had a HKS on it, then upgraded to a Synapse Synchronic BOV and it worked great! LOVED IT!
When I picked up my 2010 WRX, I installed another Synapse and the weirdest thing happened. The Synapse Synchronic BOV caused the cruise control light to stay on and also disabled it. I wasnt having that so I removed it.
Then I found the Agency Power Adj. BOV, and it just got worse...sounded great and after driving around for about 20-25mins, my idle dropped so low that it would turn off!!! Removed that ASAP! but am now noticing my MPG is low. ANYONE ELSE HAVE THIS PROBLEM???