Spooky_Intentions Posted March 29, 2018 Share Posted March 29, 2018 Hey everyone. We had the car running before bringing it to the tuner and it would cold idle a little a bit low on cold start up for a bit. However, after bringing the car back from the tuner i have a very strange cold idle issue. Please take a look at the youtube video link because im honestly not sure how to describe it. Any help would be greatly appreciated. I am very unhappy with the work the "tuner" did on the car and will end up having to bring it to someone else but i would like to get this resolved before hand. Any ideas why this happens? L28ET running off a VR sensor with MS2 Quote Link to comment Share on other sites More sharing options...
Chickenman Posted March 29, 2018 Share Posted March 29, 2018 More details on your setup please. Are you running an IAC valve? Post your MSQ so we can have a look at it. I have done Remote Tuning for several member on Hybrid Z and Classic Z. I believe all have been satisfied with the results so far. Quote Link to comment Share on other sites More sharing options...
Spooky_Intentions Posted March 29, 2018 Author Share Posted March 29, 2018 (edited) I have not added an IAC quite yet its on the list, so I will try to provide as much info as i can. Any kind of remote help for my tune would be greatly appreciated as the guy really did a poor job and it ran worse after i got it than when i first brought it to him L28Et 440cc injectors intercooler t3t4 turbo 240sx throttle body and TPS VR sensor and trigger wheel greddy bov no IAC quite yet this idle will happen and then die until about 120 degrees and then it will idle normal. Previously before the "tune" it would idle low and want to die but not this weird tick that its been doing. CurrentTune.msq Edited March 29, 2018 by Spooky_Intentions Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted March 29, 2018 Share Posted March 29, 2018 Got a data log of this? It could be the ECU is losing the RPM input. Quote Link to comment Share on other sites More sharing options...
Spooky_Intentions Posted March 29, 2018 Author Share Posted March 29, 2018 I'll look up a video on how to make a data log and get it logged for you guys Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted March 29, 2018 Share Posted March 29, 2018 Data logging is pretty straightforward: To get a data log, go to the Data Logging menu and click Start Logging. You will be prompted for a file name. The log starts when you save the file (this is an easy one to get tripped up on as a lot of people expect saving the file to be what you do at the end of the log). Once you have recorded what you need, go to the Data Logging Menu and click Stop. If you want a video, though, check out Andy Whittle's How EFI Works channel on YouTube. https://www.youtube.com/watch?v=LeqAzDNOeaI Quote Link to comment Share on other sites More sharing options...
Chickenman Posted March 30, 2018 Share Posted March 30, 2018 I'll PM you. I'm not surprised that Tune is not working. Tune is not even even remotely close to what that engine needs. Lots of basic settings totally screwed up. Quote Link to comment Share on other sites More sharing options...
Chickenman Posted March 30, 2018 Share Posted March 30, 2018 Andy Whittle has top notch Video's. Quote Link to comment Share on other sites More sharing options...
Spooky_Intentions Posted March 30, 2018 Author Share Posted March 30, 2018 Thanks a lot guys. I'll be trying a cold start tomorrow and try to get a data log of it to upload Quote Link to comment Share on other sites More sharing options...
Spooky_Intentions Posted March 30, 2018 Author Share Posted March 30, 2018 Alright guys, i got 2 data logs. 1 is from cold start all the way to warm(had to tap the gas a few times to keep it alive and it still died a couple times but closer to the end you see the idle issue i was talking about) the other is just regular idle(with miss fires) after the car was warmed. 2018-03-30_10.20.59.msl 2018-03-30_10.25.57.msl Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted April 3, 2018 Share Posted April 3, 2018 It's losing RPM sync. Can you capture the RPM problem in a tooth log? Quote Link to comment Share on other sites More sharing options...
Chickenman Posted April 3, 2018 Share Posted April 3, 2018 (edited) Actually, it was the whole Tune that was just not very good. I did a Remote Tuning session with Brett and built him a new Tune from scratch . It's running fine now. There is a problem with noise on the Coolant sensor, but we are addressing that. Idle issue was actually due to very poor VE and Spark Maps. Large jumps between adjacent RPM and Kpa cells were one of the big issues. There is no Sync loss now with new Tune. Another happy Customer Edited April 3, 2018 by Chickenman 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.