I’ve been using the 123 blue tooth distributor on my ‘76 BMW 2002 since November 2020. Th unit replaced my trusty tii pe vacuum advance Petroniux distributor which I have had for over 20 years and never let me down. Let me tell you that this is one of the best upgrades I made to the vehicle due to my engine set up. Having side drafts require more advance so having the ability to change the timing is a God send. The first thing I noticed is the smooth cold start. Carbs stink in the winter especially Weber DCOE’s without choke cable. With this unit the cold start is effortless. Also the gauge function, GPS speedometer are great because my original Speedometer is definitely off. Thank you 123 for upgrading the gauges with digital tach and curve. I wanted to provide that feedback a long time ago but forgot and voila you added that great feature on the gauge. Today I just happen to notice it it wasn’t there yesterday. All I can say is this is a great ignition upgrade but make sure you use the correct coil. I am using a new Bosch blue coil instead of the resistor and blaster coil I used for the Petronix system. The only other improvement I can think of right now is to improve the clips that hold the cap. They tend to come loose and the cap can come off. For now I pinch the clip to make it more secure but it does loosen with time and vibration of these carbed motors.

This app is great! I wouldn’t mind being able to store a few curves. I don’t know the difficulty’s in making something like this thing work but let’s say you have a really hot engine and you’ve tweaked your timing to the limit of detonation, things like hot weather and fuel quality can put it over the top, the tune feature is great but If something like a knock sensor and a auto tune feature could be incorporated I’d be super jazzed! I’ve installed one on my type 4 and one on a customers 911 and the results are great and worth the money but dyno tuning is needed for the insane results you’ll get.

I have used this app successfully after installing a BT distributor in my 1971 S2 6-cyl Jaguar XKE. I since sold it and bought a 1974 XKE V12 and saw that there is a special order version available. It uses 2 6-cyl units that are interleaved to perform the function. I bought it and after some integration issues caused by a lack of special instructions (changed static timing, different ignition wire order from the Lucas), I finally got it running. The sync between the units was off (second bank fires a little off the middle between the bank A firings), so the German 123 tune seller told me to go to this app and select settings and switch between 2 units to shift the advance of one to sync them. I found that there is a bug in the app where the file names get confused between the two units. Sometimes a read from bank B retains the file name of bank A or vice versa. It then stores the wrong timing. Changing it back is iffy since the names are sticky and editing file names seems to not work reliably. Can you look into multiple BT bank programming and fix this file name bug? It is frustratingly to program one bank and find the changes spilling over to the other bank once I select the other bank and read its data. I have not figured out what exhibits the bug exactly but when switching between units, file names do not stay separated and pop up incorrectly after reading the bank. Correcting is hit and miss. Other than this (and the lack of necessary special instructions for this 12-cyl unit), I am happy with the ability to program the engine.

I have a 1976 BMW 2002 with a mostly stock engine. This distributor and Bluetooth software work great. There are a few issues that I have overcame. The first one was a reset for the radio. The blue light kept blinking and would not connect. Guys in Germany who sold me the distributor said to short the black to the red, turn on the ignition, wait about 15 seconds, the light becomes solid and should connect. That worked great. The other issue I had was going between my iPhone and iPad. It would not stay connected for longer than 15 seconds or so. It kept disconnect in and reconnecting. I turned off the iPhone and just used my iPad and all was good. No connection issues. I assume these are minor software bugs that will be fixed with an update. Car runs better than ever. I found an extra 10 horsepower..Update.... New version crashes on both iPad Pro and iPhone 7. Crashes just after the splash screen. Please fix. I love my 123.Update 2. Great work in the latest update. Love being able to save the curves. Makes it so much easier. One thing to add, it would be great to be able to move the gauges around so the one of interest is in the middle and larger to see.