I've just found out what MPG my El Odio (a 63' Hornet) has been doing. It's the grand mark of 24mph.
24MPG!

After tweaking, twiddling, adjusting it's still at a crappy mark. So now I've got to pay some little scrot to set my car up for me to try and get a proper MPG out of it.
More money down the plughole.
And the RR place is 60 miles away. Joy, the cost of getting there is going to be the same as cost of the tuning.