Holley EFI, Not just for American 4BBL carb replacements anymore... Options

[horizontally-opposed]

So I am hearing this is a very attractive setup for 4+ cylinder engines, and can be made to work with ITB setups for a flat six, such as PMO's. The 4BBL pricing sure is right, and it's said to be "self tuning" and a dream to work with/on.

Anyone have any experience of this, or know of a Porsche engine running it?

[horizontally-opposed]

When I think about EFI, I like the idea of the "who" behind the system.

Any company can go out, but I put more stock in Holley or something like Andrew pointed out (the MS3 unit). I think about some of the old Haltech or other random systems, and trying to keep a 368 or 486 laptop going to support them.

Only way I'd do the Holley or MS3 is if I could use ITBs made for a flat six (i.e. PMOs). But the prices of these units are getting pretty interesting compared to Motec systems of not long ago—even the "budget" ganged four-cylinder Motec setups where you controlled a flat six like an inline three. Now we are seeing price points that make a conversion from a good, sellable set of 911 Webers pretty interesting.

It isn't a bad time to be a car enthusiast...

[ConeDodger]

When I think about EFI, I like the idea of the "who" behind the system.

Any company can go out, but I put more stock in Holley or something like Andrew pointed out (the MS3 unit). I think about some of the old Haltech or other random systems, and trying to keep a 368 or 486 laptop going to support them.

Only way I'd do the Holley or MS3 is if I could use ITBs made for a flat six (i.e. PMOs). But the prices of these units are getting pretty interesting compared to Motec systems of not long ago—even the "budget" ganged four-cylinder Motec setups where you controlled a flat six like an inline three. Now we are seeing price points that make a conversion from a good, sellable set of 911 Webers pretty interesting.

It isn't a bad time to be a car enthusiast...

Pete, I still recall our conversation a decade or so back at that drive-in in Napa Valley. You were right of course, the SDS system I used was only a bit better than a well tuned carb. Perhaps in its defense, it was controlling ITB’s that had massive vacuum fluctuations. Your argument, that the factory systems were so much more sophisticated was on my mind when I decided to go with the factory system on the 3.2 that ultimately found its way into my car.
I do think the MS3 described by Andyrew is a much more advanced system and it’s hard to believe SDS is in the same price range. I plan on using this system with the new engine I’m putting in my 240Z.

[Mark Henry]

When I think about EFI, I like the idea of the "who" behind the system.

Any company can go out, but I put more stock in Holley or something like Andrew pointed out (the MS3 unit). I think about some of the old Haltech or other random systems, and trying to keep a 368 or 486 laptop going to support them.

Only way I'd do the Holley or MS3 is if I could use ITBs made for a flat six (i.e. PMOs). But the prices of these units are getting pretty interesting compared to Motec systems of not long ago—even the "budget" ganged four-cylinder Motec setups where you controlled a flat six like an inline three. Now we are seeing price points that make a conversion from a good, sellable set of 911 Webers pretty interesting.

It isn't a bad time to be a car enthusiast...

Pete, I still recall our conversation a decade or so back at that drive-in in Napa Valley. You were right of course, the SDS system I used was only a bit better than a well tuned carb. Perhaps in its defense, it was controlling ITB’s that had massive vacuum fluctuations. Your argument, that the factory systems were so much more sophisticated was on my mind when I decided to go with the factory system on the 3.2 that ultimately found its way into my car.
I do think the MS3 described by Andyrew is a much more advanced system and it’s hard to believe SDS is in the same price range. I plan on using this system with the new engine I’m putting in my 240Z.

Did you try the SDS in TPS only? Solved all my issues.
You have to go into the hidden coding to change it.