Graham BPT Posted March 27, 2021 Report Share Posted March 27, 2021 Hey everyone! I'm new to tuning the G4X ECU and really enjoying it so far. However, I have found something I cannot seem to control unless I am missing it in the software and that is the delay to resume Lambda control after a fuel cut event. I was testing flat foot shifting (which works really well by the way) and I noticed that after cutting fuel to make the shift, the CLL does not resume for what looks like maybe 1500-2000 ms from the end of the fuel cut. That's a long enough period that I end up going for the next gear before it resumes again on the 2-3 and 3-4 shift here. It comes back near the end of 4th gear as you can see in the picture. I want to be able to control this delay and bring it down to a more sensible amount so that CLL can resume shortly after the fuel cut ends. Has anyone else noticed this or have any insight or a way to get around this? I've reached out to get in touch with the Link engineers but have not heard back so I figured I'd ask here and also let others be aware of this in case they see it. Obviously a well tuned map will maintain your target AFR without CLL under normal circumstances but I tune some high boost cars that do drag racing and things can get out of whack on a pass so I want to be able to have CLL there at all times to trim things when needed. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 27, 2021 Report Share Posted March 27, 2021 Yeah, it looks like it has a hardcoded 2sec re-activation delay after lockouts at present. There is no way to work around that from what I can see. I think it would be nice to have more control over that so I will put it forward as a feature request. k fuku 1 Quote Link to comment Share on other sites More sharing options...
Graham BPT Posted March 27, 2021 Author Report Share Posted March 27, 2021 2 hours ago, Adamw said: Yeah, it looks like it has a hardcoded 2sec re-activation delay after lockouts at present. There is no way to work around that from what I can see. I think it would be nice to have more control over that so I will put it forward as a feature request. Thanks Adam! This is why I like you guys! I appreciate the support. Quote Link to comment Share on other sites More sharing options...
Electredge Posted March 28, 2021 Report Share Posted March 28, 2021 5 hours ago, Graham BPT said: Thanks Adam! This is why I like you guys! I appreciate the support. as quick as those gear shifts appeared to take place I assume this is a sequential gearbox. what kind? are you using paddles or gear shift lever? I've been wanting to test a Link on one, still waiting on a customer to get the car ready Thanks Jon Quote Link to comment Share on other sites More sharing options...
Graham BPT Posted March 28, 2021 Author Report Share Posted March 28, 2021 5 minutes ago, Electredge said: as quick as those gear shifts appeared to take place I assume this is a sequential gearbox. what kind? are you using paddles or gear shift lever? I've been wanting to test a Link on one, still waiting on a customer to get the car ready Thanks Jon Haha, no actually this is just manually shifting with a clutch. It’s a 1999 Subaru 2.5 RS with a 2007 STi engine swap and a short ratio Subaru 6 Speed gear box. I can shift it decently quick and with the right shift cut settings is very quick and smooth. I’ll upload a video tomorrow if you want to see it. The upper clutch switch is the trigger and it’s open looped timed control for the cut and resume of power. A proper sequential box would be even faster. I’m planning to eventually fit one to my 2011 STi time attack car. It’s on a Motec M1 ECU currently but I’ll likely do some Link ECU testing and development on it once they’ve got support for these models. Link’s shift cut logic seems well written so it should work very well for a sequential box I suspect. Electredge 1 Quote Link to comment Share on other sites More sharing options...
Electredge Posted March 28, 2021 Report Share Posted March 28, 2021 1 minute ago, Graham BPT said: Haha, no actually this is just manually shifting with a clutch. It’s a 1999 Subaru 2.5 RS with a 2007 STi engine swap and a short ratio Subaru 6 Speed gear box. I can shift it decently quick and with the right shift cut settings is very quick and smooth. I’ll upload a video tomorrow if you want to see it. The upper clutch switch is the trigger and it’s open looped timed control for the cut and resume of power. A proper sequential box would be even faster. I’m planning to eventually fit one to my 2011 STi time attack car. It’s on a Motec M1 ECU currently but I’ll likely do some Link ECU testing and development on it once they’ve got support for these models. Link’s shift cut logic seems well written so it should work very well for a sequential box I suspect. that's impressive, like .5 seconds consistently too... I'd love to see the vid, and I recently did a sequential on M1 as well and wanted to see how a Link would do. we will see which of us gets to test it first Quote Link to comment Share on other sites More sharing options...
Graham BPT Posted March 28, 2021 Author Report Share Posted March 28, 2021 Just now, Electredge said: that's impressive, like .5 seconds consistently too... I'd love to see the vid, and I recently did a sequential on M1 as well and wanted to see how a Link would do. we will see which of us gets to test it first Haha. Thanks. I’ll get the video linked tomorrow. it will probably be you. I’m waiting on a new engine for my car and recently got sucked into side by sides. I might have accidentally blown my sequential fund on a Motec ECU and turbo kit for my Yamaha YXZ1000R lol. Off roading this thing has been way more fun and way less expensive than racing cars. I’m just addicted to boost and can’t leave anything alone. Quote Link to comment Share on other sites More sharing options...
Electredge Posted March 28, 2021 Report Share Posted March 28, 2021 Just now, Graham BPT said: Haha. Thanks. I’ll get the video linked tomorrow. it will probably be you. I’m waiting on a new engine for my car and recently got sucked into side by sides. I might have accidentally blown my sequential fund on a Motec ECU and turbo kit for my Yamaha YXZ1000R lol. Off roading this thing has been way more fun and way less expensive than racing cars. I’m just addicted to boost and can’t leave anything alone. John Reed or Cody Phillips? LOL Quote Link to comment Share on other sites More sharing options...
Graham BPT Posted March 28, 2021 Author Report Share Posted March 28, 2021 Just now, Electredge said: John Reed or Cody Phillips? LOL Cody just sells John’s kit as far as I know. I ordered from John direct since he did the package for my STi. He writes nice firmware for sure and actually owns a YXZ too. Quote Link to comment Share on other sites More sharing options...
Electredge Posted March 28, 2021 Report Share Posted March 28, 2021 Just now, Graham BPT said: Cody just sells John’s kit as far as I know. I ordered from John direct since he did the package for my STi. He writes nice firmware for sure and actually owns a YXZ too. he wrote the firmware in the M1 Sequential I did recently https://www.instagram.com/p/CDYETC3nmx5/?utm_source=ig_web_copy_link Quote Link to comment Share on other sites More sharing options...
Graham BPT Posted March 28, 2021 Author Report Share Posted March 28, 2021 Just now, Electredge said: he wrote the firmware in the M1 Sequential I did recently https://www.instagram.com/p/CDYETC3nmx5/?utm_source=ig_web_copy_link That looks like a fun one for sure. Quote Link to comment Share on other sites More sharing options...
Graham BPT Posted March 28, 2021 Author Report Share Posted March 28, 2021 9 hours ago, Electredge said: he wrote the firmware in the M1 Sequential I did recently https://www.instagram.com/p/CDYETC3nmx5/?utm_source=ig_web_copy_link Here's the video of the FFS testing to go with that log. Electredge 1 Quote Link to comment Share on other sites More sharing options...
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