The Digi Sync 4-CHANNEL Digital Carb Sync Tool | Digital Vacuum Gauge | Works on 2, 3, or 4 Carbs or Throttle Bodies | Easy to Use | Improves Power & Fuel Economy | Made in USA

EXCELLENT PRODUCT, EASY TO USE , EXTREMELY ACCURATE.

It is expensive for sure, but holy smokes did it make carb syncing so much easier and faster. I have (which wont be for much longer now!) a Motion Pro manometer that I could never get to work properly because one cylinder would always shoot through the roof for some reason. With this Digisync, I spent more time getting the engine up to temperature to do the sync than it took to do the actual sync. Seriously, it took less than 5 minutes from turning on the device (to do the self-calibration), to me having all the carbs dialed in. I just checked and noticed that the Motion Pro is over $150, and when compared to this device, which I paid about $260, which is more than it is listed for now that I am checking again (annoying), but it is still totally worth the extra! The self-calibration is totally worth it, so is the tank mount and not trying to hang a tool off a handlebar and trying to read the pulses in fluid. The only thing I had trouble with was figuring out how to turn it off. You have to hold down the power button for about 1/2 a second. Shorter and it wont register the shut down request, any longer and it will change some settings (auto off, and units).

As some other people commented, this carb tuner has totally been a great purchase to bring my bike from a hit or miss carb tune up to 100 percent tuned! Before this I used to rely on overall feel or ear to how my carbs should sound. My older 1984 VT750C Shadow was hesitant to start and idle felt like the front cylinder had issues. After plugging this tuner in I had my bike in sync in a minute! Wow, now that's something to be said how this simply works! It's super easy to use also, just unscrew the vacuum screws on your engine, screw in one of the included brass screws and attach the hose to it and the tuner then turn your adjustment sync screw for your carbs and that's it! I will add this to future users, do not screw the brass screw that's included with a socket or wrench! As I found out by slightly tightening it the brass screw sheared off with a piece stuck in my cylinder. I easily removed the part luckily. My advice is finger tighten the brass screws in and attached the vacuum hose. I reached out to support and within minutes I was given details how to purchase more screws at a very reasonable price and shipping to Canada even!

This is very useful. Makes syncing easy. Wish it had a couple more buttons to make the interface easier

Purchased this in April 2021. Shortly afterwards I put all my tools into storage as I replaced my workshop. This has probably been used between 2 and 5 times. Yesterday display went all strange and then went off. Sometimes the backlight came on and sometimes not. Battery appeared to be getting hot. Messaged The Digi Sync and they replied really quickly. Sorry not in warranty but sometimes if you re-solder the pins to the LCD that can solve issues was the gist of the reply. Also offered 50% discount on a new one. Thanked them for their quick response and generosity. I found that under the main PCB is a large magnet and this had fallen off and was shorting across the pins under the PCB. So yes this is easy to use and does appear accurate but I do now have concerns on build quality. Another reviewer said it feels a bit like a toy and that is probably true. As it is working again thanks to some superglue I shall persevere but expected something designed for the workshop to be a bit more robust rather than internal bits falling off.