the last one I made, I tore off the cover for the relay, and put the transistor and resistor inside the casing, then put the lid back on and glued. makes for a nice neat enclosed unit. as long as you remember its not really a relay anymore :P I plan on putting it inside the relay casing at some poi...

Finally got it working - the main problem was - I was using the wrong source wire all along. The actual wire color used was different to the one stated in manual. Anyways the cheapo oscilloscope (~20Eur) came in handy. Found the signal in the same connector, but different wire. http://i60.tinypic.co...

I connected a multimeter (finally ) and it gives ~12v. Will wait for the scope and check the signal to be sure what I'm working with.

Nice work :thumbup: I vaguely recall helping dump a bin off one of these ECUs a few years ago (I found the thread - see http://pcmhacking.net/forums/viewtopic.php?f=38&t=2327) so now that you have the comms side working you should be able to install Tuner Pro RT and my MotronicPlugin, load a M1...

I think the problem might be exacerbated by the fast switching lambda (I'm using a WB with NB simulation). The old original NB lambda seems to be dead, as it constantly reports 433 mV, although the WB is constantly changing the reported lambda around 1.0 mark +/- 0.15 at idle (and the simulated NB v...

dont know anything about motronic stuff.... but with any injection system, if you put 20% bigger injectors in it, then it is putting 20% more fuel into your engine, everywhere, throwing out the whole tune... you need to wind the base injector rate back 20% to get back to where you were with the old...

btw. could it be a side effect of bigger injectors (+~20%), that the engine is oscillating at idle rpm?

Are you sure it's 2v? I would have expected a 5v pulse Ah - crap - you're right. The 2V/20ms is oscilloscope recommended settings, not actual voltage of signal... For the signal itself it says just 30Hz @ idle (900rpm). And this is the signal that should be there (if the scale is right... it should...

Built the tacho booster yesterday, but it doesn't seem to work. Don't have a scope yet to check what's going on exactly. I used a 1N4007 diode, 2N4401 NPN transistor,a 2K2 resistor and a generic automotive relay as a coil. could it be that the 2V signal is too low to switch the transistor through th...

I'd replace the stock NB with the WB, and use the simulated NB for the ECU's closed loop. The datalogging with the stock bin is *very* limited - it will only work below 2000 rpm, and you can only request 1 value at a time. My modified bin will allow datalogging at any engine speed, and sends multip...