Do not use the aftermarket ones from brands hatch etc.
WHY
I had a long conversation with a chap at webcon he informed me that they tested those and would not sell them due to poor quality. And weber marrelli will not be making anymore and have scraped the tooling.😕

So unless the likes of Stu at MSD can come up with a bosch replacement and can map to suit we are all fooked and will have to go aftermarket.

Paul