They need to test it to the spec of my 1st post bud. They have tested it wrong. I had that trouble last year phoned dvsa them self and they confermed it was wrong and should have a basic cat test ie more room for movemet with emissions. Go back to the garage with my picture and show the tester that or even better get them to look it up in there book or computer. tester should no this anyway as its an import, cheers nick