Long story short, some idiot almost merged right into me today. I gassed it to get away from said idiot but accelerated more than I think I should have. Couldn't hear anything because I was cranking the tunes, but looked at dash and saw I had gunned it to 4000 rpms. NEVER do I or have I gone up that high in rpms because a fear of tranny problems, but it happened today and about a minute later my check engine light came on and has been on since and I notice a difference in the shifting during acceleration. I stopped at autozone for a scan of the code but their scanner didnt pick up anything. I know the only real way to determine the issue is to have my mechanic do a full diagnostic scan but I was hoping to get some feedback from anyone on here with some knowledge. I have always been mindful at not gunning it for this exact reason but yeah, I think I screwed up big! Help!