What modern EFI is everybody using, Modern EFI applications on Type-IV engine Options

[TheWeatherMan]

What modern EFI systems is everyone installing on their Type-IV engine?

[Mark Henry]

I installed SDS way back in 2004, still running the same system in my bug but I re-chipped it to the latest version before V5.
Likely I'm one of the first here running a programmable FI system, at least on a DD.

http://www.sdsefi.com/

My 914 I ran it on a stock 1.8 and 2.0 with a mild carb cam with a pretty well stock D-jet intake (intake used on both the 1.8 and 2.0). Both engines ran flawless, perfect AFR, on the 2.0 I took the programmer off and ran it for 3 years (6+ month seasons) without ever checking it. I'd say it ran like a brand new L-jet, turn the key and go.

My bug is a super hi-performance 2.6L T4, 102x78mm, nickies, JE's, 2.0 big valve heads, Web cam, A1 1-3/4 exhaust etc, etc...
Only issue is because of the 46mm ITB's I can't get a good MAP signal and I have to run it as a TPS only system which may hurt my MPG slightly.
But then again it still runs flawless even on TPS.

I can tell you for 100% sure PEFI doesn't add a single HP, but it can run things, like a performance cam, that stock FI can never run.

[JamesM]

PEFI alone adds no HP, but a proper tune on top of that PEFI will, especially if your system is controlling your timing as well. Having a full 3 dimensional tuning table for both fuel and spark allows you to dial in the tune and give the engine exactly what it needs everywhere.

I installed SDS way back in 2004, still running the same system in my bug but I re-chipped it to the latest version before V5.
Likely I'm one of the first here running a programmable FI system, at least on a DD.

http://www.sdsefi.com/

My 914 I ran it on a stock 1.8 and 2.0 with a mild carb cam with a pretty well stock D-jet intake (intake used on both the 1.8 and 2.0). Both engines ran flawless, perfect AFR, on the 2.0 I took the programmer off and ran it for 3 years (6+ month seasons) without ever checking it. I'd say it ran like a brand new L-jet, turn the key and go.

My bug is a super hi-performance 2.6L T4, 102x78mm, nickies, JE's, 2.0 big valve heads, Web cam, A1 1-3/4 exhaust etc, etc...
Only issue is because of the 46mm ITB's I can't get a good MAP signal and I have to run it as a TPS only system which may hurt my MPG slightly.
But then again it still runs flawless even on TPS.

I can tell you for 100% sure PEFI doesn't add a single HP, but it can run things, like a performance cam, that stock FI can never run.

[914_teener]

PEFI alone adds no HP, but a proper tune on top of that PEFI will, especially if your system is controlling your timing as well. Having a full 3 dimensional tuning table for both fuel and spark allows you to dial in the tune and give the engine exactly what it needs everywhere.

I installed SDS way back in 2004, still running the same system in my bug but I re-chipped it to the latest version before V5.
Likely I'm one of the first here running a programmable FI system, at least on a DD.

http://www.sdsefi.com/

My 914 I ran it on a stock 1.8 and 2.0 with a mild carb cam with a pretty well stock D-jet intake (intake used on both the 1.8 and 2.0). Both engines ran flawless, perfect AFR, on the 2.0 I took the programmer off and ran it for 3 years (6+ month seasons) without ever checking it. I'd say it ran like a brand new L-jet, turn the key and go.

My bug is a super hi-performance 2.6L T4, 102x78mm, nickies, JE's, 2.0 big valve heads, Web cam, A1 1-3/4 exhaust etc, etc...
Only issue is because of the 46mm ITB's I can't get a good MAP signal and I have to run it as a TPS only system which may hurt my MPG slightly.
But then again it still runs flawless even on TPS.

I can tell you for 100% sure PEFI doesn't add a single HP, but it can run things, like a performance cam, that stock FI can never run.

So James.....just as an observer. What is the minimum required for that?

Hall sensor......knock sensor....O2 sensor?

[JamesM]

So James.....just as an observer. What is the minimum required for that?

Hall sensor......knock sensor....O2 sensor?

Not sure I understand the question here. The minimum you would need to have full program-ability of fuel and spark maps is an aftermarket EFI system that supports that. If you are talking minimum cost than Megasquirt is usually the answer and that can be built just about any way you want with whatever sensors you want as long as you have the know how to put it together (be warned is a pretty steep learning curve)