#Ecu map simulator how to#

Rod at its highest point when the intake valves are open is TDC. If you remove the valve cover you will see the camshaft lobes and valves. Rotate the crankshaft until the rod reaches the highest point, TDC. If you know which is cylinder 1, you can find TDC by removing the spark plug and inserting a piece of welding rod, stick, or anything relatively long and fits in the hole. Doesn't help that I've never heard an engine knock before. I originally thought that knock should be audible anyway, but I guess the milder knocks are harder to hear than that. I'll definitely try to sort something like that out. We'll just have to start the engine at the next Dyno session, seeing as we don't have any base maps to work off of.Īlso, thanks for the advice on the Knock detection headphones. Also, thanks for the advice on the starting Lambda value, I'll definitely take that safety margin.īasically from your answers I gather my suspicions are confirmed. I already read both of Greg Banish's books and they indeed helped me a lot, So I'm not completely clueless as to the actual tuning process, thankfully, though it will be my first time tuning an engine. I also need to find the specifications of the injectors (which is another unknown) before mapping the VE, but an experiment to find these unknowns will be conducted shortly I'll be getting a timing light in short notice.Ībout the VE mapping, I'll be using a Wideband O2 sensor (which we still need to buy). My name is Tal, I'm part of Tel Aviv University's FSAE team. I indeed forgot to introduce myself, apologies.

The TDC offset thing is less of an issue, but the OEM base maps really have me stuck, seeing as I don't want to start the engine with a bad map, to have it destroy the engine.Īpologies if my questions are too general

#Ecu map simulator how to#

So basically, do you have any basic ideas on how to find TDC offset without a Timing light? (I'm afraid this question might be too general). Not to mention the loss of accuracy of doing it without a timing light. I've had a few ideas already, but unfortunately all of them fail because they require knowing exactly where the index tooth is (that is, it's zero crossing on the signal). I don't a timing light around at the moment, so I was wondering if there is a different way to find TDC offset without using a timing light. My second issue is finding the TDC offset to put in the ECU settings. I guess my question is, How did you guys deal with installing a new, standalone ECU on your engine? Did you have the OEM base maps? If so, where did you find them? If not, what was your process? Did you do what I've written above, or was it different? Also, I won't be able to touch the engine until I can get it to a dyno and start tuning from there. Failing that, I'll have to set conservative timing for ignition, Fuel map of basically Lambda = 1 across the board, and VE table set with a single starting value for the whole table. The thing is, to do that, I sort of need to have a base map to start from (and I've tried searching for it to no avail). I want replace our current ECU setup (piggyback powercommander III attached to the original engine ECU) with a standalone ECU. So my team uses a two cylinder 500cc engine, Yamaha T max 500 (2007).Īmong the many problems I've had figuring out the unknowns of this engine, the toughest so far has been finding the base OEM ignition, fuel and VE maps (since it uses speed density air modeling). Hey guys, this is basically a hail Mary since I've searched up and down the internet for an answer, but here goes: