2015 civic si sedan
Discussion Starter · #1 ·
I recently got my 2015 civic si (full bolts ons with RBC swap and j37 TB) tuned, when it was being dnyo tuned it sounded great and made 225WHP. After a couple of hours it started running like crap, it bogs and hesitates around the 2k-3k mark and feels like it’s not performing at it’s best. I Went back to my tuner he couldn’t figure it out aswell and ended up sending the logs to hondata, it came back as being the crank position sensor. So long story short I’ve changed that, the O2 sensors and it’s still the same. On top of everything it isn’t throwing no CEL.