hi, i have a problem with the EPC and motorlight is on. my golf 5 gti is from 2004.
i got it chipped from 200 hp 280 nm up to 255 hp ca 360 nm. after i have had the chip installed i drove it for about 2-3 weeks. then i heard a strange sound under my car. and later that day the EPC light turned on, and about 1 minute after that then my motor light turn on.... any ideas what would have caused this? any suggestions would be appriceated