Single Throttle Body Setup Question Options

[Craigers17]

This thread is meant to "sort of" piggy back off the current thread on fuel delivery setup options. I see that Clay has this link for a complete modern EFI system:

https://store.allzim.com/914-parts/fuel-del...efi-conversion/

...and I know the Dub Shop has a similar setup. I also see that the Dub Shop has both a single throttle body & a turbo plenum single throttle body setup. Here:

https://thedubshop.com/single-throttle-body-intake-package/

and...here: https://thedubshop.com/single-throttle-body...-turbo-plenums/

Sooooo....since I'm not the sharpest knife in the drawer, can someone educate my dumb ass on why it seems much harder to develop an aftermarket single throttle body setup for a Type4 / 914 engine as opposed to a Type 1? Or maybe I should say as opposed to one with a Type 1 shroud. It seems like the air and fuel travel the same distance. What am I missing? I do realize that 2-3 companies are working on this....just wondered why it seems to be more of a challenge.

[914werke]

I also put together a single throttle body Microsquirt EFI based on 1.8 Ljet parts. and I would 100% NOT do it this way again.

@VaccaRabite
Zach I was unaware that endeavor was using the L-jet AFM ?
Id like to hear more in depth about it. Perhaps I missed it?
Lastly what specifically was the challenge that you would dissuade other from that route?

[VaccaRabite]

I also put together a single throttle body Microsquirt EFI based on 1.8 Ljet parts. and I would 100% NOT do it this way again.

@VaccaRabite
Zach I was unaware that endeavor was using the L-jet AFM ?
Id like to hear more in depth about it. Perhaps I missed it?
Lastly what specifically was the challenge that you would dissuade other from that route?

Yes!

So I did not use the AFM - or any of the L-jet sensors. In fact I removed the barn door/flapper and made a custom tube from the air filter housing to the throttle body housing. I could have sworn I had pictures of this, but now I can't find them.

But long story short, I swapped out or eliminated all the 1.8 sensors and replaced them with modern stuff. The TPS I used fit exactly right without mods. I did not use the ljet AFM.

Why would I not do it again? Oh, I would. I would just not use Microsquirt to run the show. The tech has moved forward. The Terminator X does a LOT of self learning once you get a solid base tune. Same with the Sniper. When I did Microsquirt, this was kind of the wild west, and I had a steep learning curve. The tuning took about a year to get it where I liked it, and using old parts had all the issues of using old parts. Worn out throttle bodies. Cracked plemun. Finding or modding parts that could be worked to fit while keeping a stock outward presentation.

I've not used the Sniper yet, and I want to which Is why I'm thinking about it for my bus. And I think its probably the easiest of all the current options out there.

Zach