Duncanweiii Posted April 21, 2023 Report Share Posted April 21, 2023 Hey guys! got a 03 350z and had to swap in a new motor as my old one started knocking, got the link g4x ecu as my car was initially not sparking with stock ecu. after getting the link ecu the car is able to start but cant idle due to no throttle response, on the linkconnect i can see the throttlebody and tps is currently inactive and absolutely clueluess on why as when i plug in my stock ecu my tps and throttle body works, Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 21, 2023 Report Share Posted April 21, 2023 Ok, unfortunately, we seem to have an issue with the forum host blocking file uploads and a few other odd issues occurring on the forum today. I dont think it is going to be fixed today, so in the interest of getting you sorted asap, can you send an email to tech@linkecu with a copy of your map and possibly a short PC log. Quote Link to comment Share on other sites More sharing options...
naughtt Posted May 19, 2023 Report Share Posted May 19, 2023 Adamw, I am having the same issue with no throttle response after ECU installation. I see there had been an issue with the forum, so your response was not recorded. 2005 Nissan 350z, Auto, Base Engine with Cold Air Intake, after market headers and exhaust. Current Setup: Firmware update: 6.23.15 Base tune loaded (Nissan 350Z Auto trans twin VVT G4X Xtreme Plugin) Vacuum line from the MAP port on the ECU to the intake manifold of the engine. The engine starts, backfires, and there is no throttle response. I am new to tuning. I have gone step by step through the process. I am guessing I may need an IAT sensor, and potentially other inputs. Thank you in advance! Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 19, 2023 Report Share Posted May 19, 2023 Attach your tune and a short log showing the problem Quote Link to comment Share on other sites More sharing options...
naughtt Posted May 19, 2023 Report Share Posted May 19, 2023 Will do ASAP. Thank you! Quote Link to comment Share on other sites More sharing options...
naughtt Posted June 3, 2023 Report Share Posted June 3, 2023 Will do ASAP. Thank you! Naughtt 2005 350z Base tune 230603.pclx PC Datalog - Naughtt 2023-06-3 6;09;36 pm.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 3, 2023 Report Share Posted June 3, 2023 You have E-throttle set to disabled in your map. Set that to set-up mode initially, do the APS calibration and TPS calibration, provided they both succeed then set it to "On" mode and it should work. Also, you have some trigger errors when you first start cranking, this may explain why the stock ecu wasn't sparking, possibly the flywheel is fitted wrong or something. Can you do a trigger scope when cranking and attach that here as well. Quote Link to comment Share on other sites More sharing options...
naughtt Posted June 4, 2023 Report Share Posted June 4, 2023 Thank you for the quick response. Great catch on throttle! As I mentioned, new to this... I just left town and will be back in a week. I will run the other checks then and send. Quote Link to comment Share on other sites More sharing options...
naughtt Posted June 13, 2023 Report Share Posted June 13, 2023 Here are the logs you requested. I have throttle now. Exhaust smells like it is running rich, and backfires. If I apply throttle, I was able to run it up to around 3K, it sputters and dies. The log should have captured this. Thank you! PC Datalog - 2023-06-12 5;40;08 pm.llgx TriggerScopeLog 230612.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 13, 2023 Report Share Posted June 13, 2023 For the triggerscope you need to click the capture button while cranking (or while running), not before. You will have to redo that. Your MAP sensor calibration needs to be set to 7Bar, and you need to adjust the fuel master to get the mixture somewhere in the ballpark Quote Link to comment Share on other sites More sharing options...
naughtt Posted June 15, 2023 Report Share Posted June 15, 2023 Hello, Included are the triggerscope(s) and another log after set to 7Bar. I am reading up on the fuel master before I try messing with it. I will send as soon as I make headway. Thank you! PC Datalog - 2023-06-14 6;44;03 pm.llgx TriggerScopeLog Start 2.llgx TriggerScopeLog Start.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 15, 2023 Report Share Posted June 15, 2023 Ok the scope looks ok I think. Go to >idle speed control>idle speed control setup and change the MAP lockout to 75Kpa, the should solve the idle bouncing on/off. For the master fuel just adjust it up or down until it sounds like it is running the best. If you go it one direction and it sounds worse then go the other way. Quote Link to comment Share on other sites More sharing options...
naughtt Posted June 16, 2023 Report Share Posted June 16, 2023 Adam, I made the change you suggested. I needed to move the Z, so drove it (Gently) around the block and added the logging as well. The engine revved on its own when I parked it, from 300's to 1600's, you will see this at the end of the log. As for Master Fuel, are you saying to adjust the Fuel Table, go through Fuel Tuning Procedure, or something else? Thank you! PC Datalog - 2023-06-15 6;31;15 pm Drive Surge 500 to 1700.llgx TriggerScopeLog 061523 2.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 17, 2023 Report Share Posted June 17, 2023 Master fuel is here: Obviously you cant expect the idle to behave well until it is tuned. Drop the idle actuator integral gain to 0.05, turn on idle ignition with the settings below, and adjust the base position table as per the guide in the help file. Quote Link to comment Share on other sites More sharing options...
naughtt Posted June 21, 2023 Report Share Posted June 21, 2023 Adam, I understand I cant expect the idle to behave well until it is tuned. I didn't know if you would see the RPM fluctuating by itself. I do appreciate your advice! I dropped the idle actuator integral gain to 0.05, and turned on idle ignition with the settings you listed. I then followed the help file and adjusted the base position table as best I could. I'm sure I could fine tune it as I spend more time with it. Here are the latest log file and Triggerscope. Thank you, Tom PC Datalog - 2023-06-20 7;19;02 pm.zip TriggerScopeLog 062023.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 21, 2023 Report Share Posted June 21, 2023 Its looking somewhere in the ballpark now I think. The dashpot function needs a bit of adjustment to get rid of the undershoot as you enter idle, but hard to tell exactly which bit of it to adjust, you will soon figure it out with a bit of experimentation. Possibly a longer hold and shorter decay. Quote Link to comment Share on other sites More sharing options...
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