Spoke to dealer reference this ecu remap, and it doesnt cover all GTi's, mine apparently, the chassis number doesnt fall in their band of Golf GTi's that require this remap.cars somewhere from late 05 reg to late 55 and early 06 plate cars. mines was a 1k5 and models with 1k6 in the chassis number require a visit to the dealership, again not a safety re-call, just a running update for when the cars come in for service blah blah blah.