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SECU-2P&H+STEP unit can drive two low impedance injectors with peak-to-hold current ratio = 4 and one stepper motor.

2-ch P&H injector and stepper motor driver unit. Contains two channels to drive low-impedance (P&H) injectors and stepper motor driver. Designed to drive throttle-body injectors and stepper IAC valve. It is a versatile unit. Can be used either with SECU-3 units or with any other EMS.

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Hello.
I have a question about VE and AFR.
If I fit the ecu on a car with carb can I use a lambda probe to get VE or to check if AFR is stoich?
I rember of Lada Axtec but it's something I can't understand.
In that case how did you get the VE?
Thank you.
Bye.

If I fit the ecu on a car with carb can I use a lambda probe to get VE or to check if AFR is stoich?

Yes, you can.

Hello.
Thank you.
There are different lambda probes, I dont' remember how many and when it takes a controller.
What is the right probe?
I don't expect to much in conjunction with a carb, I know rich mixtures kill the probe.
Bye.

SECU supports wide band and narrow band oxygen sensors. SECU has no embedded controller for wide band oxygen sensors, but accepts analog output for full AFR range and controls mixture in full range (e.g. 8...22).
You can use any type of sensor from any manufacturer, e.g. Bosch 0 258 005 133
Last releases of firmware support heater's control using PWM, this extends lifetime of sensor.

Hello.
How to build the right wiring harness?
What sort of wires?
I think that it must not be too long.
What about a car with the rear engine and battery at the front?
What is the right place for the ecu?

Zastava 750.jpg (30.27 KiB) Viewed 1742 times

Zastava.jpg (27.42 KiB) Viewed 1742 times

I don't think there are many people interesting in fitting a programmable ignition in cars like those.
I already saw that old picture.

Sava Petkovic.jpg (62.4 KiB) Viewed 1742 times

Once upon a time I wanted to drive in races like that,just a dream.
If you want you can look for that old movie.

Nacionalna klasa do 785 ccm-National Class Category Up to 785 ccm.jpg (117.19 KiB) Viewed 1742 times

Bye.

If you are using a carb then you can only use a wide band lambda probe, the narrow band will get contaminated from out of range rich mixtures and also will not cover the wider mixture range a carb will give over injection.

Hello.
Thank you for the info.
Bye.