Tach for tuneups?

Thanks, I guess I start getting my buddy over here to map my curve. I changed a couple of things, need to see what it’s doing.
Still it would be simpler to be able to see it. May have to head down to Harbor Freight and check out the meter/tach.


Look around at swap meets and stuff. I've purchased two really cool, perfectly functioning Craftsman test systems. They both have tach's and other cools stuff.

I think I paid 25 bucks for the big one and 10 bucks for my small one.

Once you have one, you don't need a friend. Look around.