all i no is its a stack one and its plug and play i got it off martin . and also iv now got the ££££ put a side to have it all mapped but i now there is a problem and i just wont to sort it then as soon as its sorted i will ring martin to get it booked in . as if i dont sort it out my self it means im having to pay martin to do it ontop of having it all setup and mapped hope you under stand wot im saying