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I can't really tell by the pictures but it doesn't look like solder has flowed up the IC leg.

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Just to point something out that you might have already checked. The mixture being lean and the wideband sensor indicating lean are not always the same thing. An overly rich mixture that causes a misfire will read as lean on the wideband because of the oxygen that's being dumped in the exhaust. Στάλ...

I'm not arguing that this design in this application works. It apparently does since its used by OEMs in actual cars. It is designed for a specific application and with the parts selected it will work fine, driving the engine it was designed to drive. But, if someone copies this design to use it in ...

The breakdown voltage for this mosfet is 100V minimum. The datasheet doesn't specify nominal and max voltage so this could might as well reach 200V under some operating conditions. I wouldn't want voltage spikes of this magnitude coming into my ECU. Also I don't think it's wise to use a mosfet in a ...

This kind of driver will also need the "fb" voltage to be monitored by the CPU in case the load is shorted. This circuit will limit the current to 2A but in case of a shorted load the mosfet will have to dissipate over 28 Watts because it will go into its linear region. Στάλθηκε από το CLT...

Maybe the tank was filled to the brim and the one way valve was not working in order to stop liquid fuel reaching the canister?

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This has analog current limit. Nice approach but needs several small parts.

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For driving the solenoid you have several solutions simpler than peak n hold. You can use a resistor in series like we do on low Z injectors. It would slow the response of the solenoid but you don't really care since you want it to be always active after power on. You could use a small switching reg...

Be careful of the low temp solder paste you got. It's great for desoldering stuff from boards because it lowers the melting temp of the original lead free solder but if used for soldering it makes fragile solder connections. Don't use it on anything that is exposed to mechanical forces or smd parts ...

Once you get the oscilloscope you'll have a much clearer idea of what's the root cause.
Another thing. How are your grounds? I hope the guy that made the wiring kept the sensor ground separate from power ground. Where is the fan motor grounded?

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Why not use the BMW sensor that goes around the spark plug wire?

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The VR wire is shielded? This is quite important for interference from electrical noise. Also the route it takes through the engine bay. Avoid going near ignition coils and spark plug wires.

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When you connect tunerstudio it should pop up a dialog box saying what's the critical error.

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Ideally you can make a peak n' hold driver with LM1949 but it can also work with a series resistor to bring the total resistance around 12 to 14 ohms. In that case you will have to calculate the injector dead times from scratch. Best solution would be to install a high-z injector that fits in this m...

Easiest way is adding a series resistor.

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This explanation of PID has to be in the Wiki if it's not already there.

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What kind of SD card is it and how is it formated?

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This sounds like 2 squirts per cycle = batch injection.
4 squirts per cycle = simultaneous injection
and 1 squirt per cycle would be sequential injection.
How are your injectors wired in?

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Where do you connect pin 1 of your main relay?

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Do you have 12V at pin #1 and #5 of MRE?

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Pins are correct. Measuring with a multimeter do you have 12V at pin 10 of the main relay when you turn the key on the ignition?

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Can you make a diagram to show us how you have connected your MRE? What pin of MRE goes to what pin of engine harness and then upload your tune to Rusefi online to verify it's setup correctly. The Peugeot 106 uses a very similar main relay and the MRE drives it without a problem. Στάλθηκε από το VOG...

AFAIK you are not allowed to use copper wire to extend thermocouple cables since every wire connection will act as a separate thermocouple junction and alter the reading. Ideally the thermocouple should be connected to a suitable connector right next to the IC so that it's cold junction compensation...

Different rdson resistance. Pick the lowest one since it makes less heat while on.

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TP6004. It's a clone of MCP6004. Are you ordering from lcsc?

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The relays will be wired as main relay on pin 4 and fuel pump relay on pin 23.
Pins 7 and 10 are the security code keypad and the diagnostic connector and I don't think you'll use either of these features.

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Both ECUs are able to run this engine as it's fairly simple. Your main issue will be ignition since your coils are "dumb" and the transistors that drive them are inside the stock ecu. Neither MRE nor Proteus have transistors to drive dumb coils directly. You will either have to use an exte...

Yep, that's tight in space. If you place it where the battery is now how are you going to route the downpipe and the rest of the exhaust? Unless you go full mad max and just put a straight pipe through a hole in the fender. In that case you can also mount it low on either side of the radiator and us...

I guess the pistons are from a EJ22 NA since only 22B had a turbo version of this engine. I don't know much about these particular engines since they were never sold around here. Generally EJ16 and EJ20 NA pistons don't tolerate much boost. People usually use 0.7 bar max but at much higher compressi...

8.4/1 compression ratio calls for big boost. Even 8.8/1 can do 250kpa on a stroker EJ20.

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