Places in East Anglia to remap c32 after pulley change

[Dazzler]

Anyone know places for the above please?
I know Acid can do them but hoping there are places closer.

 

[JBell]

GAD are in Burnham-on-Crouch in Essex

 

[Dazzler]

Tried GAD but they couldn't tune it due to not running on high octane fuel?
Wasn't told anything until I had already gone there....... wasted 4hr round trip.....

Any other ideas/recommendations?