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.

[Craigers17]

I appreciate all of the feedback and information. @GregAmy I read your entire MicroSquirt document....very informative and I'm sure there are many, including myself, that are very appreciative of your documentation.

I agree that to many of us the stock D-Jet is a pretty good system from the get go. My problem is that, while I could probably scrounge up a pair of runners from what I have, I'd have to buy the plenum and throttle body at the very least to go the Microsquirt route or to go back to D-Jet. More than likely the throttle body would then need to be refurbished.

At the same time, I really prefer a single throttle body vs going dual anything. Personally, I'd rather have the reliability and simplicity over increased power. When you have dual carbs or ITB's, you still have to have dial in 2 different mechanisms and then get them sync'd together. Not only that, in the case of carbs, you have 2 different units that can get jets clogged, etc. I would like to combine something like Microsquirt with a similar to stock, yet modern throttle body with modern runners and EFI, similar to Mario's Type 1 system that I linked in the first post.

I'm really just trying to educate myself so that I am at least aware of the best options out there as I start my next driveline setup. My current engine is toast, so I'm at a crossroads as to which direction to go. My next step is going to be dropping the engine and doing some analysis. Then we'll go from there.