Which Model 123Ignition is Best for 1965 230SL?

[rjmarco]

Hello, Members. 

After having my car quit right after a tune-up from failure of new ignition points, I've decided to convert to electronic ignition and use the 123ignition system.  From the US website, it looks like there are three options:  Merc 6-R-V; Merc 6-R-V-M USB programmable; and Merc 6-R-V-M programmable blue tooth.  Is their one that is recommended over the others?

Also, what other hardware is needed for a successful conversion?  The Mercedes pinch clamp?

Lastly, install with spring or no-spring?  I think the forum consensus is no-spring. 

Many thanks,

Rich

[Rolf-Dieter ✝︎]

Hi Rich,

I assume you had a good read in our Tech Manual

Here ---> https://www.sl113.org/wiki/Electrical/123Ignition

Dieter

[rjmarco]

Thanks, Dieter. 

I've read the tech manual info as well as the related discussions within the forum, especially concerning the "spring".  I can see that it's now recommended to not use a spring with a new 123Ignition unit.  I've also found that there are YouTube videos that show the BlueTooth compatible version of the 123Ignition which allows programming from an iPad app. 

Regards,

Rich

[MichaelB.]

Just wanted to add that I have the 123 (actually have versions of it in several cars), and i really like them.

No spring and 6-R-V here.

[rjmarco]

Hi, Michael.

Thanks for the confirmation.  I have ordered the 6-V-R-M blue tooth model along with the pinch clap.  Will post how my installation goes once it's done.  Won't install the old spring. 

Rich

[stickandrudderman]

I really can't understand the need for the programmable version. These are not hot-rods we're dealing with.
Can anybody attest to having witnessed any noticeable improvement in performance having re-mapped their pagoda engine?

[Tyler S]

Only benefit I could see for a bluetooth or usb programmable unit is if you happen upon some 102 octane on your travels and want to "kick it up a notch"
The Bluetooth model has an optional antitheft feature that requires a pin number for the car to start. Thats kind of neat but if you loose your phone, not only can you not call anyone, your walking home as well.

[rjmarco]

Good thoughts.  Thanks, Tyler. 

[Raymond]

I added the programmable version to my car a couple of years ago.  The basic map proved to be an excellent replacement for the crane ignition I had in it.  However, after playing with the second map a bit the first day, I never really went back to it.  A passenger can re-map it while you are driving, but I don't have a test track and precise enough speed and fuel efficiency measuring equipment to fine tune it.  If someone has a curve they can suggest, I'd be interested in giving it a try.