Hello. I'm looking for help since I can't seem to get any from Hahn. Here's the facts: Car fired up, sputtered a bit, then smoothed out, with a frequent misfire. AFR bounces around from mid 13's to 17. Idle got a bit better after a few minutes. First touch of the throttle and idle jumped to 2k and stayed there, and still rough. Easy test drive resulted in spark knock under half throttle acceleration. Can hear blow-off valve so that is working. Nothing exciting about performance. Can't get it into boost or it knocks and that scares me so I back off the throttle. This a Hahn stage 3 kit. Had lots of issues with the kit (incorrect parts, missing parts, kit arrived in sections weeks apart). Hahn takes several days to get back with me and then doesn't fully address my questions. Products are great. Craftsmanship outstanding. Customer service is atrocious. I'm hoping there are some willing folks here to help me get this right. Guessing dyno tune is in order. Hahn pretty much promised all is "100% safe" as is and that his tune would be all I need. With all of the issues with this order and build, I just don't trust him anymore. Asked me point blank which stage I ordered the day before he was about to ship some of the kit. He wasn't sure and had the wrong idea so I have no way of knowing if my tune is even for this kit or my car, let alone safe. Hahn has no skin in the game so if my car blows up, we all know it is always the customers fault. My mechanic friend (ASE certified over 25 years who has done numerous turbo/supercharger/racing cars) says I need to get someone to dyno tune this. Didn't budget for that. If you want to help a guy in desperate need, please ask questions and let me know your thoughts. I see Hahn has some fans on here and has done well for many folks. I'm just not one of them. My experience has been the opposite. Thank you for any help you can offer.