jvalcamp

Thank you Adam. You are a wealth of information!

I am looking to purchase a BNIB strain gauge and gear controller from a buddy for a good price but am not 100% certain of compatibility with G4+ Xtreme ECU. There are many additional features on the controller that, as I understand, I basically want to operate as a simple amplifier with analog output to the ECU. I have no experience with strain gauges or these controllers. My question is can I wire it up and configure to work like this? I want the ECU to control the ignition cuts, not the FT controller. https://www.realstreetpowersports.com/fueltech-gearcontroller-gear-change-controller-with-active-traction-control-with-10ft-blank-harness.html https://www.fueltech.net/products/shift-knob-w-strain-gauge-sensor I understand there are better units available but come at a price premium compared to this option available to me. Are there other options for an amplifier? Thanks.

Finally got car back to the track. Wideband was working most of the time now but in the attached log it does show one of the passes where it did cut out on the third last run. Hopefully I set the ECU logging to capture the right runtime values. ECU Log 2023-09-17 3;55;20 pm.llg

Unfortunately the day was a bust. Car was running on 3 cylinders. Spent most of the day diagnosing and now fear that I need to pull the head to check valves. If all goes well, will be back up for next event in 2 weeks and report back then.

Ok. Just getting to the track now. Will try and report back.

There does not seem to be any lambda errors and temp is reading 32F. I do not have a capacitor wired in. And sorry, not sure what you mean by there are no Lambda channels in the log. How would I add them? I am logging

System has been working great until I swapped to a 16V battery. Ever since, the wideband will start up and run while I bring the car into the staging lanes but typically drops out either before the run starts or part way through the run. I traced back through my older logs and it never did this prior to the 16V swap. I didn't change anything with wiring or settings, just dropped the new battery in. Did I miss something? I have tried with a different sensor and got the same result. I did search and could not find anything related to issues with 16V battery. May be another coincidental issue? Thanks.ECU Log 2023-08-31 6;45;12 pm.llg (Area of interest is 38:52 to 38:56)

Looks good now. Idle was near perfect afr and Deadtime seemed good using procedure above. Thanks for the help guys, definitely pointed me in the right direction. Unfortunately won’t likely be until next weekend before I can get a better idea if that fixed the lean condition. I will update once I have more feedback

Good catch. Just got home and tested the fpr with regulated air. First test it went up 15 psi with 8 psi in. Then I tried raising the reference pressure to 18 psi and it went up 31 psi. This was logged values. I also have a mechanical gauge on the side of the regulator that did not agree with any of the logged values. I looked closer and found I was using a 0-100 psi from last year instead of the new 0-150 psi link unit but had Link configured with 0-150 psi as I thought that was the one I installed. Swapped it out and set FP at 43.5 psi and goes up pretty close 1:1 now. Next step is to get idle back and set Deadtime properly.

Appreciate the feedback. I like the Deadtime procedure and will check that once back home. I should be able to do that for at least two voltages. Alternator charging and not charging. Like Koracing mentioned though, this won’t likely have a big impact on higher load conditions. to answer your question, the fpr is functioning properly and rising roughly 1:1 with boost pressure. The one question I have is I have entered the injector flow rate at it’s 43.5 psi fuel pressure yet I am running about 50 psi base fp. Do I need to have the flow rate entered to match my base fuel pressure?

New to link but I have been tuning DSM's for over 10 years. I just installed Xtreme in my 2G. Details on setup: 2.0L, G35-1050 turbo with twin scroll T4, side exit, Magnus IM, Kelford 272 cams, mechanical fuel pump, 2150 injectors. Base fuel pressure set to 50 psi (lowest I can go). Currently running pump gas but will be switching to e85 as soon as I figure out fueling. I went out for first test drive last night and it drove OK but would go dangerously lean as rpm and load came up. I am assuming I have something configured or calibrated wrong but am unable to find it. It seems that to make appropriate fuel table changes that I would have to nearly double, putting me at almost 150 which does not seem right. My base fuel table was taken from Evo 1-3 then globally scaled until idle gave Lambda equal to target. I was hoping this would be at least close to being right as it actually was close to matching my previous DSMLink VE table. My assumption is it's either something in the Fuel Table or injector setup. Appreciate any help and feel free to criticize anything you see not right.