an invitation for aftermarket EFI people..

[sono veL.O.ce]

This is the place to share your experiences/knowledge with everyone who is considering EFI (electronic fuel injection). I keep reading multiple posts of people who are interested in megasquirt, go-tech...and all of the other options, and there really isn't detailed/organized information here on the board.

This should be the place to organise everyone who has experience and tally everyone who is interested. I have a dream of a few brave souls going forth with thier projects and getting support from fellow BBers. I have a dream of well documented instalations guiding people to thier own conversions. I have a dream of posted fuel maps and settings for popular alfa motors.

Really there are enough of us here such that instead of just asking questions we should be pooling our resources and helping eachother discover the answers. Then leaving those experiences in place for future conversions.

I have a dream..

[nicke]

I'm keeping a build "blog" here: Nick's '69 GT Veloce Project

And as soon as I have maps, I'll share them too.

Cheers, Nick

[sono veL.O.ce]

And I have been loving that thread! I have been considering a megasquirt for my twinspark project, but I am patiently waiting for them to add programmable igntition to the main board. I like the megasquirt because besides the fuel and ignition it can control other circuits based on engine paratmeters such as the VVT, an electric fan, an electric clutch to a supercharger....

What are you-alls thoughts? How are the features on that go-tech unit?

[slyalfa]

you might look at one of VEMS systems http://www.vems-group.org/

I am one of the main HW guys the worked on the v3.x

it has 2 knock inputs
2 WBO² inputs
8 injector drivers
8 coil drivers
steperdriver
8 low current drivers for driving relays and such
and some other stuff misc drivers
and more. see the weblink

here is a pic of the one going into my spyder

[nda9h]

Hi,

i am using a EMS Stinger 3 (see http://www.enginemanagementsystem.com/ )in my 1750 GTV. Very good results on dyno (168HP w. moderate modified 2ltr engine), easy to tune and set up with the included windows software.

Approx. 6000km run with it, also several racing events, no problems occured.

Thomas

[75evo]

I have an autronic SMC ecu in my Milano. Where did you buy your it from? Beninca motors?

[nda9h]

msiert,
i have a 45mm multi throttle bodie from http://www.vgs-motorsport.de/
same size as weber carbs, so it was easy to convert.

[Romeo85]

Wow this is aesome. I have always thought about running a standalone EFI system on the car. I wasnt sure wether others have done so or had a desire to do so. Im not currently going at this project but am planning on picking up one of the following setups for my VW project.

Here are a few more options for those searching
http://www.034efi.com/
http://www.sdsefi.com/

034 is controlled with a laptop. Were as SDS is easily controllable with a handheld programmer thats provided.

[Romeo85]

Not following you on the individual cylinder intake. Is that just another name for ITBs or Individual Throttle Bodies??

[nda9h]

i think i know what he means: with "wild" cams and a multi throttle bodie you can´t get a usable vacuum signal - if you take it from one cylinder, it´s "jumping around wild" around idle, and if you would take vacuum from all 4 together, then one intake would take air from another (hope you understand - it´s like you make a connection between all four intakes located between throttle bodie and valve- that´s bull****).
That´s why i have programmed my EMS- ECU to a throttle position sensor as main sensor and the vacuum sensor as a "correction sensor" for general air pressure. That works perfect.

Other solution would be to have a manifold with a single throttle bodie for all 4 cylinders. Then you can take the vacuum sensor as a main sensor, and the TPS as assistance (e.g. for accel. pump simulation and so on).

I think a multi throttle bodie is the better way for hi-performance engines.

Thomas

[John M]

Hey Murray:

I don't remember if I told you...but I am also going to use an Autronic SMC for my turbo project. I already have it here with the harness ready to go. We'll need to converse back and forth on the pitfalls as we find them. One thing I have found out on mine (a used unit) is that I will have to upgrade so that I can take advantage of the stock crank pulley timing sensor. But that doesn't seem to be a big deal. The autotune is also an upgrade. The autotune function requires the installer to have some expensive equipment as well....so he may or may not have it. $1500 or so and it is supposedly more than just the WBo2 sensor. Don't remember the specifics. I won't get into this until my garage is completed...which at the current rate will be mid winter!

Best Regards,
John M

[sono veL.O.ce]

John, make sure you have that discussion on the BB here so that we can all benefit! thanks.
-sono

[75evo]

Autronic uses both the TPS and MAP, I think TPS only for correction, but main input is the MAP, I can recheck. Anyway you can set it however you want in the setup.

I have the Autronic Type B Gas analyzer which you can use for Autotune (SMC 1.91 chip and higher I think). If you need it, it maybe possible for me to rent it out with a deposit of course (it's not cheap!).

[jpv]

I'd love to converto my Junior to EFI.
I've been thinking on the conversion for a long time. Here is what I think I will do (when I have the money...)

- Replace the carbs by a pair of twin throttle bodies (or use the Milano 1.6 injection manifold... single throttle body) and mount a TPS

- Mount a crank trigger on the front pulley and a cam sensor on the former dizzy place

- Install a dual fuel pump system with a swirl pot to prevent fuel starvation problems on corners

- Use Ford wasted spark ignition coils or other manufaturers 4 independent coil setup


The things I haven't sorted out are the following:

- How will I mont the crank sensor on the crank pulley of a 1970 115 2 liter alfa engine? The 75 1.6 liter injection has a fitting for the crank sensor but earlier engines don't...

- I never seen camshafts phase sensor installed on a dizzy. Anyone has tried this?

- Does the ECU manufacturers provide a loom to fit on the car electrical circuit? I don't want to make a loom myself, I don't want to ruin the ECU by an accidental short circuit...

- I would love to fit a lambda probe on the exaust. But don't know where...

- Is it really necessary to have an air mass(flow) sensor? I would like to keep the standard air filter...

- Where are you going to fine tune the engine? I don't have anybody who sells aftermarket ECU's over here let alone a dyno to fine tune it... I will havo to order one from england and then go there and fine tune it...

[nicke]

JPV, my GoTech arrived with a wiring harness. I'm not using a crank sensor, I'm planning to use an 81 Spider dizzy with a hall sensor instead. You don't need an air mass sensor if you use a combination of MAP (manifold air pressure) and TPS, you'll alo need an Air Temp sensor in your manifold or where the TB's suck air. I'm fitting a TPS on my trottle bodies and hooking up vacum from all throttlebodies going to the ECU's MAP sensor. I hope the hose will be small enough to prevent any "spill" between throttles.
I don't know if I will run closed loop yet, but I will weld on a bung right where the headers meet the regular exhaust, I want exhaust from all cylinders to my WbO2 sensor for tuning, and later I can always add a regular O2 sensor for closed loop. But this is all theory for right now, as my engine is getting built... But I can't wait to start playing with the EFI!!

Good Luck, Nick