I was speaking to Colin at Greersport and this is what he said whilst out mapping with the GEMS ECU in a classic with a TD05 turbo rally car"this turbo is pish and laggy as hell.....should have put the IHI VF 29 in instead.....will need a remap when the IHI goes in..."
This comment is about a standard TD 05 and not a 16g , 18 g or 20g.
You make your own mind up m8.