Just in case anyone needs to know; MAP Sensor - 8200719629 This sits on the top left of the inlet manifold, looking at it from the front, and is tricky to remove. New cost circa £100 @ trade, with VAT @ 17.5%. As at Dec 2010 there is an eBay seller offering a "Genuine" part for around £30, but I haven't bought one from them yet (needed it asap and didn't know the original part no.). They appear to be a Vauxhall parts dealer so perhaps the same part is used on the Trafic / Vivaro. Ignition Coils - 8200208611 These are known as "Pencil Coils" Originals on my 2006 car were made by Beru. I just bought new replacements made by Valeo 245104, eBay circa £17 each.