I was running a XXTuning header on my STI and recently decided to take it off and put the stock exhaust manifold back on. After the swap I took the STi out for a drive. The car felt fine but something wierd happened - only the cruise light started blinking. I thought it was wierd because the "check engine" light was not on. I hooked up my AccessPort to see if there were any codes and there were none. I took the car back out and this time the "check engine" light came on along with the blinking cruise light. I once again hooked up the Accessport and got a 17B5 code. I can't find this code anywhere on my Subaru shop manual disk. I have no idea what this code is. If anyone knows what 17B5 means, I would appreciate the help. Thanks.