Aftermarket FI options for Type 4 motors 2056 or larger, Who here has gone this route and is it worth it? What options do we have? Options

[DRPHIL914]

i started looking into this 2 years ago when i was planning my rebuild motor after the drpped valve seat on the OEM motor.
I ended up building a nice 2056 with increased compression, brand new heads, counter balanced crank and of course the cam is performance minded as well.
to start i installed the d-jet and later last year i added a 50mm bored out stock throttle body from Tangerine/Chris Foley. Yes this helped a great deal, but we are still limited due to the d-jet and the MPS. So there are a few people out there that make ITB( independant throttle body) that could be used.
One is Jenvey, and i see that PMB is carrying those. It looks ike they are mated to what ever IDF intake manifold you choose. there are 40, 45, 48 options. mated with 350cc injectors.
I am wondering other than the CB performance stuff that has been available for a while, others have come to the table, who here has played around with this ? over the years ive read a lot on others using the megasquirt and micro etc and it seemd they were very difficult to tune and set up with lots of problems, trial and error.

I am looking for advice on what to stay away from and what are the pitfalls and mistakes we can avoid before jumping into this.

Look forward to some input, thanks!!

Phil

[914Sixer]

Currently sold out but more on the way.

[DRPHIL914]

ok wow lots of great comments here i just got caught up reading it all-
this company i have known about- for a while , so i reached out to them again today, and they had an issue with their mounts. i am looking at this if i were to avoid the ITB’s and just get a programmable FI system but stay with my 50mm throttle bud and kept the direct injector, but have new improved bosch injectors that go with these fuel rails. seems keeping direct injection is best, and 50mm probably getting me plenty of air, i have an AFR ans it seems i have enough fuel although at WOT it feels like it needs more ans does go more lean, thst is so hard to change with D-jet it can’t be mapped out lik you could with a more modern FI ECU.
so maybe the Haltec EXU ans sensors to go with my stock intake runners ans 50mm TB ,
would not be a lot of $$,
Injector rehab has one set of rails and injectors, but have to make a new retaining bracket for it, so i’m drying to work out a deal with them and get that, going to look into SDS, Haltec, and get with Eric about their system they have for 2056/2270 motors they developed . not sure which ECU they use.

Phil

Currently sold out but more on the way.

[Superhawk996]

seems keeping direct injection is best

Totally know what you meant.

Keeping fuel injection terminology clean, direct injection is yet another incarnation of fuel injection. But now with the fuel being injected directly into the combustion chamber at sky high pressures. 914’s don’t have direct injection.

Typical multi port injection is sub - 100 psi range.

Direct Injection is at several thousand psi.