As said before, once the carbies have been set up with the right jets it wont go out of tune that much, I use gunsons color plug to tune my cars and to get it spot on,it actually shows the colour of the combustion inside the combustion chamber, with twin carbies i also use gunsons carbalancer which measures the air the goes into the intakes.








these tools make the job soooooo much easier, and i gets it spot on! just follow the instructions and have an understanding of how carbies work is a bonus.