I dont think they are to be honest Steve.

Put it this way though.
I have customers come to me all teh time telling me their car on greys etc is fookin great, but i dont go to shows in it cos it eats fuel.. blah blah, and im sure if you did a poll on here there would be plenty of folks whom agree with me on that.

Now when offered a new way to run the same power, but have perfect road manners and almost factory fuel economy, why shouldnt they take it? Even with 750CC injectors, you can have 100% perfect throttle response / cold running & fuel economy...

To add another dimension to the equasion, ask Karl about TFC and all its corrsponding problems with huge injectors and the headaches it causes him with fuelling load sites.... His agonised face may make you smile..
The lambda software cures it 100%