Williams did the ECU and sports exhaust on my 2011 Plus 4 - GDI engine. The exhaust sounded great as the revs increased, but slightly muffled lower down, compared to the original. The remap brought the power band lower down the rev range - it used to come to life well over 3000rpm as far as I remember, and generally became even more fun to drive!
Well documented on here of the (almost essential) benefits of remapping and exhaust mods for the GDI. However, re: Jon’s post above...I didn’t think that the GDI was used by Morgan until 2014, or maybe a few in the latter part of 2013?
