Hi, i had a hole in my miltek flexi at the bottom of the downpipe, got it booked in the garage with no lights on the dash, got the car back today all fixed and on the drive back engine management light has came on, i was half expecting it to come on while i drove the car with the hole in the exhaust, but now that its fixed the light has came on, any suggestions ? can i reset it myself or it could be unrelated? any advice welcome thanks,