I have a 2017 STI. Mods include a AEM CAI and AWE Touring catback exhaust. I recently purchased the Cobb Accessport and a Cobb SS 3in Downpipe. I was told by Cobb that the OTS Maps don't support a downpipe + CAI map. The reason is that the fuel system can't handle both mods. Has anyone had experience with this? What are my options? Is running the Stage 1+ tune beneficial compared to the Stage 2 tune or should I revert back to the stock airbox and install the DP and run the Stage 2? Anyone running this setup that can give me some input? Thanks in advance.