🚗 HOTSYSTEM Universal 2inches 52mm 0-9999 RPM Tacho Gauge Meter for 4 6 8 Cylinder Cars - Blue LED Digital Display Review

I read all the reviews from others and was a bit concerned but figured it was only $20 and I'll give it a try. I installed it on my original 1940 Chevrolet 6 cylinder engine. On the handset my RPMs were 650. On the new digital readout it jumped to 3000 and then dropped to 2400. And nowhere near true RPM. So I delete it and put it in the Lessons Learned box. Quick update, I was told about a speedometer filter that might solve the problem. Installed, no change. The filter didn't change anything.

I bought two of these. One worked great on my dad's Chevy v8 truck, it was damn accurate, but it didn't work on my truck. My truck has a f150, xlt, inline 6 (ford 300) 1992 engine. Once I put a tach on my truck, it worked and everything, but tach readings were literally everywhere. One second idle is 4,000 rpm, the next - 8,000, and then 2, you get the idea. I then made sure it was connected to the coil and set to position 6. However, this does not work. For those with an inline 6, I wouldn't…

The wires on this tachometer are half the length and were easy to hook up once I added a few feet of wire to attach. This thing registers revolutions immediately. Idles over 7500. I've tried switching between 4, 6 and 8 cylinders and it made no difference, I think the switch isn't working. When the display reads over revs the V is larger and the 2nd rev number never lights up unless I wiggle the rear forks, but as soon as I let go of the forks the numbers go out again. I bought this to use at a

Putting something in the hole yes speed sensor. not so great. It was cheap and I got what I paid for. When this meter reads 3, it's an upside down "F". Segments work well, but 3 doesn't illuminate the bottom segment of the display. Otherwise, the revs on my 6-cylinder with MSD and speedometer output jump everywhere. Idle is ok, high revs are mostly ok, but on the way up or down this gauge sometimes shows 8-9000 rpm when I'm around 4000. I'll pull that out and get an analog gauge. The seller is…