ZXT_bean Posted June 10, 2009 Share Posted June 10, 2009 Ok well ive finally gotten my car to the point of being able to tune it. A little about the car. It is a 280zx, with a 81 intercooled turbo motor. using a 240sx TPS, GM IAT & CLT. still using the factory turbo injectors and n/a pump. Im using a ford edis igniton system. Im using a LC-1 for tuning. MSII v3.57, 2.888 firmware. With this tune I have uploaded the car will sit and idle, though really unsteady will hold an idle. As soon as I touch the gas pedal it wants to sputter die and back fire. Regarding the LC-1, I have a guage installed in the car, but it will only blink 7.4 afr. and my gauge in megatune is showing 20 afr. Every time it back fires or sputters the afrs drop to about 13.4 but shoot right back up. all while the gauge on my dash is just blinking. I have to check the out puts to verify I have them set right. Ive been trying to make some sort of a data log, but as I said, I cant even put the engine under a load with out it dieing. Any help is greatly appreciated! megasquirt200906092324.zip Quote Link to comment Share on other sites More sharing options...
Noddle Posted June 10, 2009 Share Posted June 10, 2009 I'm no expert, but looking at your EGO control, you have Controller Authority set to %100, I would drop this to %10, not 100, (pic 1) and in your VE table at 1K RPM / 30-60 KPA, it has a largish values compared to the cells around it. but I think your EGO maybe the main problem, it kicks in when RPM is above 700, and TPS below %80, so I would assume it kicks in as soon as you touch the throttle Nigel Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted June 10, 2009 Share Posted June 10, 2009 If you connect to the LC-1 with LogWorks, can you see your AFR there? Any error messages? Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 12, 2009 Author Share Posted June 12, 2009 Ok, well I have made the changes you all have suggested. Now the car wont even idle.. I have to give it about 3-5% throttle to keep it idling, and even then its popping and back firing like mad.. But i was able to get a matched afr reading from both log works and megatune. although my in car gauge is still blinking 7.4. I had to change the voltage outputs in the LM Programer. I know output 1 is for the gauge (yellow wire), and the 2nd output is for WB/MS (brown wire). as for output 1, i am unsure what the voltage outputs should be, but the 2nd output is setup up 1volt=10 afr, and 2volt=20afr. when it is running the afr's are in the low 11's. which i know is very very rich. here is another copy of the updated tune with the corrections i was talking about. megasquirt200906121347.zip Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 15, 2009 Author Share Posted June 15, 2009 now i dont understand this.. now my ecu wont connect to megatune, and when i turn on the key it primes the pump for 1 second then turns off and then turns on and turns off.. and just repeats.. idk what i messed with.. but maybe i broke it? Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted June 15, 2009 Share Posted June 15, 2009 The pulsing fuel pump indicates a config error. I'd see if you can connect with Port Check first, and if you can't, try reloading the firmware. Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 15, 2009 Author Share Posted June 15, 2009 The pulsing fuel pump indicates a config error. I'd see if you can connect with Port Check first, and if you can't, try reloading the firmware. no it wont connect to port checker.. just try and reload the firmware... ok ill give that a shot.. Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 15, 2009 Author Share Posted June 15, 2009 ok got the firmware problem all worked out.. now to get this tune figgured out.. Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 20, 2009 Author Share Posted June 20, 2009 now im having firmware issues yet again. but now i cant get any firmware to work. im stumped with this thing. Quote Link to comment Share on other sites More sharing options...
mobythevan Posted June 22, 2009 Share Posted June 22, 2009 The fuel pump pulsing doesn't really mean the firmware is bad, just that the worng settings are entered. I would go through all the settings in megatune. If you do not change any settings and then the next time you turn on the car, the fuel pump pulses then it sounds like a problem with power or the board where the firmware and settings get corrupted. That could be bad grounding or bad crimp connections, solder joints, etc. Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 24, 2009 Author Share Posted June 24, 2009 The fuel pump pulsing doesn't really mean the firmware is bad, just that the worng settings are entered. I would go through all the settings in megatune. If you do not change any settings and then the next time you turn on the car, the fuel pump pulses then it sounds like a problem with power or the board where the firmware and settings get corrupted. That could be bad grounding or bad crimp connections, solder joints, etc. Ive been in contact with Matt at DIY. He is going to inspect it under warranty. But while it is at his shop, I do have another ms2 v3.0 with the 2.888 code that will be used with my brothers car. He has been kind enough to try and let me tune on that ecu, then just burn the tune to the other ecu. back to the drawing board. Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 25, 2009 Author Share Posted June 25, 2009 ITS ALIVE!! I just took her for her first trip to the gas station around the corner to put some fresh premium 93oct. fuel in her. I was able to get a data log. any and all help is once again greatly appreciated. one other thing. If the car is running or not, im not able to change any values in my ve, afr, or my ign timing tables. do I have some value somewhere wrong that is preventing me from accessing those tables? Quote Link to comment Share on other sites More sharing options...
ZXT_bean Posted June 25, 2009 Author Share Posted June 25, 2009 here is a copy of my tune, and the log file as well. under a load, it still has no real power. seems to stumble in the higher rpm. im not sure where to go from here. running.zip Quote Link to comment Share on other sites More sharing options...
Guest Rolling Parts Posted June 25, 2009 Share Posted June 25, 2009 I think that the LC1 stays on 7.4 until it warms up. Mine does that for about a minute before reading correctly. Quote Link to comment Share on other sites More sharing options...
FCvg30et Posted July 1, 2009 Share Posted July 1, 2009 What are your edis settings? Under ignition options I have Ignition input capture set to rising edge, cranking trigger is calculated, coil charging scheme of course EDIS, and spark output is going high (inverted) Also, what kind of plugs are you running in the motor? I was running NGK copper plugs until I started reading about the Ford EDIS system. All of the factory ford guys that have edis swear you must run double platinum plugs (the kind with a platinum tip on the electrode and strap. As a matter of fact Ford called for different part number spark plugs in each bank on some vehicles. It has something to do with the polarity reversing in the coils and the way electricity flows in the plug. Anyway, I switched to Denso double platinums and the car was a different animal. Idle, cruise, throttle response and power in boost (16psi) improved greatly. And I even thought it ran pretty good before. I would highly reccomend double platinum plugs if you are running edis and msII. Quote Link to comment Share on other sites More sharing options...
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