Greddy07si

So, I need some help. I’ve got a 07 civic si with hondata kpro and a greddy turbo. So I just got this car like 2 months ago and went to get it tuned. When I did I had an aem wideband installed and my afr’s have been really good since. 14.7 at idle and 10.5 to 11.0 on wot. One day leaving work I did a little pull and when it came back down to idle the afr’s were reading at wot levels at idle, but it didn’t seem to do anything so I just thought that the gauge must be getting a false reading. Wot afr’s were still normal. Fast forward 2 weeks. I’m driving home after work and it starts sputtering, drives about another mile and stops and cuts off. When I try to fire it back up it just cracks over. If I hold the throttle all the way down it acts like it try’s to hit but still won’t. Any ideas? I thought maybe I had an injector stick open but idk how to check. Any help would be appreciated. Thanks