Er6n does not rev past 4k
2012 er6n with 50k odo.
Couple of weeks ago it couldnt rev past 7k, was very busy so didnt look into it but currently it cant rev past 4/5k propperly, not on idle and not under load. When slowly build up throtllr it will sputter there, when i jank it full throttle it bwoaaps.
Started with the intank fuelfilter and pump, cleaned and checked the flow of the pump which seems good. Blew air trough all hoses and no restrictions.
Just did new sparkplugs and coils, no luck
Tried driving without oxygen sensor, no difference
No fi light
Had airfilter out and cleaned it but that shouldnt be the problem.
Any tips? When I keep throttle open for a while i see sometimes little ambers from exhaust and hear ticking in exhaust when i shut it off, seems like fuel in exhaust.