SVDA Vacuum Advance and EMPI ECT 34's

Anyone have experience putting a SVDA in their speedster that comes with the EMPI ECT 34's? It is not clear to me where the vacuum port on the ECT is (or could be put in)

Engine is the Vintage Speedster 1915 Stocker, so thinking that the better advance would make a big fuel and performance improvement. Interested in peoples opininion on the performance improvements possible with the better advance curve.

A GOOD upgrade IMO.
I have the same engine setup and purchased from Aircooled.net the Mallory SVDA w/ electronic module and had them setup the Advance Curves . I also purchased their recommended Bosche coil (correct resistance is CRITICAL for the life of the module).
On the Left side of each carb there is a vacuum port tube that has a cover over it. I "T'd" a vacuum line to both carbs and then to the distributor. You want a vacuum source that's above the throttle plate. IF you have a vacuum guage you can verify the correct tubes/ports on the carbs. At idle there's NO vacuum and when you open the throttle you'll see vacuum. A MAJOR improvement in starting, cooling and mileage (appx. 4 mpg).
http://vwparts.aircooled.net/Mallory-Distributor-Unilite-with-Vacuum-Advance-p/4754101.htm

I found the ports around the back with rubber caps on them. I will try the svda (ordered the Pertronix SVDA from Aircooled) Plan on tee'ing the two carbs together as you did and see if this improves performance

I recommend that you have them set the distributor curve for you engine.
Give them as much detail as you can.

With the vacume advance, i should be able to lean out the mix, do you know what jets you put in your EMPI Carbs? Currently I have the factory jetting, whis smeels like it is running pretty rich.

I run the Pertronix svda and coil, along with dual Solex/brosol 34mm carbs. Big improvements in driveability, mileage and temp's, vs the stock carb and 009 distributor. The vacuum line only runs to the left carb though, as only the left carb has the vacuum port on it. Seems to work fine,, not sure if hooking up to both carbs is better or not ?? Alan

Hooking up to both carbs would smooth out the vacuum signal a bit to the advance diaphragm, since the pulses would be closer together, but if it's running well now, don't mess with it. You would not necessarily notice a difference with drivability.

From Kirk/(EMPI): 140 main, 50 idle, 200 air.
Now I'm at 140 main, 50 idle and 175 air. It's still rich but I'm getting 24mpg combo driving (3.88 ring and pinion). I purchased a Innovate AFR setup but haven't installed it yet. I'm waiting for a new throttle linkage since you have to take the existing one off when you want to change Main or Air jets as the linkage mounts to the top of each carb. I'll post when I get some AFR info as I know several run this setup from Kirk.

I have installed the SVDA, and the engine runs better with noticably better performance and less misfiring on deaceleration. I was able to set the idle advance at 7.5 (versus 10 with the 009) so this may be the reason.

Next steps are to set up the carbs, to lean out the mix, will let folks know how that goes.

Matt