anthonym Posted May 11, 2019 Share Posted May 11, 2019 Anyone have a linky to instructions?I've looked high and low and can't find them.R500K Anthony Link to comment Share on other sites More sharing options...
revilla Posted May 11, 2019 Share Posted May 11, 2019 R500K with Emerald ... Procedure is probably different to the original MBE setup. Link to comment Share on other sites More sharing options...
anthonym Posted May 12, 2019 Author Share Posted May 12, 2019 far as I know the airflow is the same and the other part is setting the TPS where memory fails me.note to self from http://www.emeraldm3d.com/faq Throttle pot recognition: how to tell which wire is which? Any Throttle Potentiometer (TPS) has three wires - which are: +5v Signal Ground (GND) Disconnect the TPS Sensor and work on the TPS sensor plug – not the wiring harness plug. Using a resistance meter (automotive multimeter) find the two wires which do not vary their resistance when you move the TPS spindle. These two wires are the +5v and GND - you just don't know which way round they are! To determine this connect either one of the +5v/GND pair to the remaining wire – which by default must be the signal wire. Note the resistance value you see and operate the TPS spindle. If the resistance value INCREASES as you operate the pot then the wire you are working with is the GND If the value of the resistance DECREASES as you operate the pot then the wire you are working with is the +5v Emerald ECU connections are: +5v = pin 9 0 = pin 30 signal = pin 8 If your engine is using independent throttle bodies it is vital that they are well balanced. The most useful tool is a synchrometer (small air flow tool that you just hold into the trumpet with a needle that indicates air flow on a 1-10 scale) - they're useful for both carbs and throttle bodies so you may already have one or have access to one (if not, the old pipe to the ear trick is fairly good!). Link to comment Share on other sites More sharing options...
revilla Posted May 12, 2019 Share Posted May 12, 2019 From Mankee Cheng: See page 8. Sounds really easy: http://www.emeraldm3d.com/media/software-manuals/Emerald%20K6%20Quick%20start%20Guide%20Rev3.pdf. Link to comment Share on other sites More sharing options...
rj Posted May 12, 2019 Share Posted May 12, 2019 You'll want an air flow of some 5.5 kg/h per cylinder at idle (1000+-50RPM)Later I'll see if I can remember to upload the guide to my server. I'm in the garage at the moment and don't have access. Link to comment Share on other sites More sharing options...
anthonym Posted June 5, 2019 Author Share Posted June 5, 2019 The latest question is whether my having set the TPS has caused my emissions test to fail by ten timesthe HC limit. What is unclearis whether having done this without reference to how it was set when the maps werecreated, mean# all the maps are out.It is realeasy to do. Whether it was wise remains to be seen. Link to comment Share on other sites More sharing options...
CageyH Posted June 5, 2019 Share Posted June 5, 2019 My understanding is that high HC readings are caused by 1 of 8 things. Poor spark. Ignition timing too advanced (linked to cam belt change?) Lean air/fuel ratio too much air, not enough fuel. Faulty lambda? Very rich fuel/air ratios- too much fuel, not enough air. EGR issues - not relevant here. Engine issues - cylinder sealing, low compression, valve timing. Faulty cat. Restricted or plugged injectors. I would be looking at my valve timing as the cam belt has recently been changed as my first step. Link to comment Share on other sites More sharing options...
oilyhands Posted June 5, 2019 Share Posted June 5, 2019 There is a crib sheet on the Emerald website on how to align the throttle pot, it takes no more than 30 seconds once the ECU is connected.Once this is done the origin of the map and origin of the TPS are in sync. As is the throttle progression.In my experience of 100s of Emerald equipped engines the high HC is most likely rich fuelling, it’s a fully programmable ECU, just lean it off a little at the load and speed sites where the test is done.Unless your cam timing is an absolute mile out it will have little effect on HC on an Alpha-N system like the Emerald.Oily Link to comment Share on other sites More sharing options...
anthonym Posted June 5, 2019 Author Share Posted June 5, 2019 Why has the map changed since it passed the emissions test with flying colours? Or what else has changed? Link to comment Share on other sites More sharing options...
anthonym Posted June 5, 2019 Author Share Posted June 5, 2019 Mucky injector(s)? These removed just. 4 3 2 1 left to right Link to comment Share on other sites More sharing options...
CageyH Posted June 5, 2019 Share Posted June 5, 2019 They pretty much confirm it is running rich. Link to comment Share on other sites More sharing options...
revilla Posted June 5, 2019 Share Posted June 5, 2019 Anthony, I believe you recently fitted a switch to allow you to switch between maps, and you confirmed on your laptop that it was switching between maps 1, 2 and 3. Are you absolutely sure that the map you are running on now is the same one that was selected by default before you fitted the switch? Link to comment Share on other sites More sharing options...
anthonym Posted June 5, 2019 Author Share Posted June 5, 2019 Yes map 3.1 and 3 are identical being the mot map.My plugs have exhibited what they show, for years, including previous sets.and the emissions test was attempted on all three maps, oil at 76 deg c Link to comment Share on other sites More sharing options...
CageyH Posted June 6, 2019 Share Posted June 6, 2019 I think you need to connect the laptop to see what is going on.It could be as simple as a faulty temp sensor, and without that data, you will end up guessing. Link to comment Share on other sites More sharing options...
anthonym Posted June 23, 2019 Author Share Posted June 23, 2019 Laptop now connected..emerald connected . no idea what to do. Where do I look to spot faulty sensors etc?p.s. I have Dave Walker’s book here, just exploring it. Link to comment Share on other sites More sharing options...
anthonym Posted June 23, 2019 Author Share Posted June 23, 2019 Map Pressure 0 bar Link to comment Share on other sites More sharing options...
revilla Posted June 23, 2019 Share Posted June 23, 2019 Don't think you have an MAP sensor? Link to comment Share on other sites More sharing options...
anthonym Posted June 23, 2019 Author Share Posted June 23, 2019 What is it? And is IAC pos in red a bad thing? Edit I don’t have one? Link to comment Share on other sites More sharing options...
revilla Posted June 23, 2019 Share Posted June 23, 2019 It would be ... except you don't have one of those either! Link to comment Share on other sites More sharing options...
revilla Posted June 23, 2019 Share Posted June 23, 2019 MAP - Manifold Absolute Pressure. More sophisticated way of measuring engine air demand. Throttle, engine speed, temperature all affect the density of the air in the intake system. Density and engine speed give you a pretty good measure of the mass of air the engine is swallowing per second and therefore how much fuel to inject etc. In your case as you have separate throttle bodies and no plenum, the ECU uses a simpler / cruder approximation based on TPS to estimate load (on my car for example the TPS is used to detect closed throttle and rapid throttle movements but is otherwise ignored by the ECU whereas on yours it's the key input).IACV - Idle Air Control Valve. A small ECU controlled valve that bypasses the throttle and let's the ECU modulate the idle speed directly. Again as you have separate throttle bodies you can't really run an IACV. Instead your ECU just has to set conditions that should give you a sensible idle and then you get what you get (or possibly it modulates the idle speed by managing the ignition timing only). Possibly more important in tintops where there a lot of other things that can load the engine at idle and need to be compensated for by the ECU such as electrical loads, power steering pump, air conditioning. Link to comment Share on other sites More sharing options...
anthonym Posted June 23, 2019 Author Share Posted June 23, 2019 Ok, so the only thing that loads the engine is me TPS keeps coming up. Wonder if I caused all this by fixing it when it wasn’t broke. Link to comment Share on other sites More sharing options...
CageyH Posted June 23, 2019 Share Posted June 23, 2019 I am surprised that the IACV is not disabled? Maybe mine shows, and I have never paid attention to it. Link to comment Share on other sites More sharing options...
anthonym Posted June 23, 2019 Author Share Posted June 23, 2019 Tempting to wonder if it should be Link to comment Share on other sites More sharing options...
CageyH Posted June 24, 2019 Share Posted June 24, 2019 I will check mine tonight, but if the Emerald is trying to adjust the IACV, it is wasting it's time. Link to comment Share on other sites More sharing options...
oilyhands Posted June 24, 2019 Share Posted June 24, 2019 If the corrections for the IACV are set to zero then it doesn't matter if the IACV remains configured. However it is better that it is nulled, that said, some TB setups do run an IACV. The SLR and R400 (Titan) TBs have an ICV present.Oily Link to comment Share on other sites More sharing options...
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