Hi Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
I Own both. The color tune came first. I set my Big Healey up with it and had problems. If I set it to the correct mixture at Idle, it ran very lean on the highway. So I set it to run fine on the highway, but it was very rich at idle!
Along came the gastester and the added information allowed me to solve the mystery. One of the needles wasn't seated where it needed to be in the vacuum piston. The offending needle had no shoulder like newer replacements. However, when the needle was set lower in the piston, the car could be set to have about 2.7% CO eading on both exhaust pipes and the car cruses down the road like a dream. I have the added benefit of the car starting more easily when it is cold (if it ever gets cold in Florida).
The gas tester allowed me to see that things were very strange with numerical precision, something even a first time user can understand. If I had understood the color tune indications it would not have been necessary to use the gas tester, but being new to to the color tune, it was not obvious what it was indicating.
I like the numerical display of CO percentages as opposed to the pretty colors displayed by the color tune. I am willing to concede that, if you are experienced, either will get the job done.
Cheers
Along came the gastester and the added information allowed me to solve the mystery. One of the needles wasn't seated where it needed to be in the vacuum piston. The offending needle had no shoulder like newer replacements. However, when the needle was set lower in the piston, the car could be set to have about 2.7% CO eading on both exhaust pipes and the car cruses down the road like a dream. I have the added benefit of the car starting more easily when it is cold (if it ever gets cold in Florida).
The gas tester allowed me to see that things were very strange with numerical precision, something even a first time user can understand. If I had understood the color tune indications it would not have been necessary to use the gas tester, but being new to to the color tune, it was not obvious what it was indicating.
I like the numerical display of CO percentages as opposed to the pretty colors displayed by the color tune. I am willing to concede that, if you are experienced, either will get the job done.
Cheers
