Damo said:This is one of the reasons that I went for Superchips.Pondrew said:There's a dyno printout on Superchips website for the generic donor car.https://www.superchips.co.uk/curves/E89Z418i.pdf
If you trawl through the archives here you'll see a great example of someone who bought a Celtic Tune re-map based on the published graph only to find a couple of years later on a rolling road that the actual curve was nothing like the graph shown by Celtic Tune!
https://z4-forum.com/forum/viewtopic.php?f=23&t=123191
Having said that I've test driven a re-mapped 18 and stock 20 and 28 and the re-mapped 18 was very rapid, about as quick as a 35i (not 35is)