Originally Posted by
oldford
27C64 chip? That was used on the rear wheel drive L1 and L6 ecu's.
An L8 should have a 27C128 chip.
Check what ecu you have here:
http://bigturbo.co.uk/main1.htm
I definitely have an L8 but when I asked on here what number chip I had (as ex factory) no one replied so I went to another forum and that was what I was told so I'm sure you are correct.