the lead is too short
I can't reach the end of the exhaust pipe and the battery at the same time, it would be better if it had a longer cord on the exhaust sensor so I could test it under driving conditions, i have at least 10 classic cars so its impractical to install an outlet on all the exhausts>
if there an extension for it?

Great product

Tried this on my 1977 Triumph motor cycle.
Had both carbs reading in the middle with 1 Lambda, garage full of fumes. Took the bike for a test and in about 10 minutes misfire at low revs.
Just got home and removed plugs, both completely black. Too rich, $350 dollars wasted. Fitted new plugs, went back to doing by ear and bike running well.
Unit probs faulty,pr operator, have the carb balancer and swear by it.
Buyer beware.

Good and serves it's pupose, however the addition of a spring (to the securing bolt) to provide some tenstion would be good to help secure it in place (whilst driving the vehicle). I note another review, it fell off and I can see how this could happen.

Very pleased with this unit. It allowed me to fine tune my Datsun 260Z with twin Hitachi SU carbs
Great value