u/Bimmerram

So I have a 2019 Golf r running and ie tune. I was stage 1 for about a year and yesterday installed downpipe and intercooler for stage 2. I know they just changed the app and a little of the tune but right after I tuned it to stage 2 I started having misfires. Not sure if anyone has had this issue but just can’t seem to figure out what’s wrong. The car cuts power after 4k rpm if flooring it, and then will throw a flashing check engine for misfires. If I just normally drive and not floor it it’s good, I can get into the power band, but if I floor it cuts power and check engine again. Can’t seem to figure out the issue