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cwhite951

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cwhite951 last won the day on December 3 2023

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About cwhite951

  • Birthday 06/27/1960

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  1. cwhite951

    LS 4L60e

    nobody has any advice on a trans controller?
  2. cwhite951

    LS 4L60e

    I am doing an LS swap and have the Link kit for the engine, that's the easy part...looking for any advise on controls for the 4L60e. Does anybody have any experience or advise on 4L60e controllers? thanks
  3. thanks. This is all because I have an issue with having buttons that don't do anything! Probably never going to use them but they better have functionality if they are there!
  4. i'm thinking assigning a voltage based on the resistance into the analog cruise input is the way to go. I don't have wheel speed but transmission output speed should work fine.
  5. I would like to implement the cruise control in my project (LS3 in a TJ Jeep). Don't really use it much, its more of a technical challenge to make it work. The factory buttons on the steering wheel have 5 total buttons. they are on one wire and work by engaging a resistor when each is pushed Wondering how to use this with my Link ECU (its DBW with speed input)
  6. reviving an old topic - do you have an idea for a calibration curve for this NTC? I am in the middle of a project and it woudl be nice to have a decent starting point before I fire it up. its for a transmission temp sensor so not super critical.
  7. Good ideas! I have a bunch of other mods for winter (in this hemisphere) and I’ll add this to the growing list, Thanks
  8. cwhite951

    e throttle blip

    I am thinking about an interesting project, I am converting my 944 turbo to E throttle and one of the things I would like to implement is a 'blip switch'. a simple momentary contact switch mounting to the shift lever that would open the throttle when pressed manually. It looks way to complex to come up with gear position sensors on the old 5 speed so a 'real' blip shift rev matching system would be difficult to design/install - so manual button could replace heal / toe rev matching. I would like to tie it into the clutch switch so that the button is only enabled when the clutch is released so that it cant manipulate the throttle when in gear. Any thoughts to this idea? BTW - I was an avid heal/toe guys for 40+ years, recent injuries/old age have made it not as easy and the 944 is evolving into a widebody GT car making it more difficult for me to be as smooth as I once was. Thunder ECU on this one.
  9. cwhite951

    boost control

    the boost control was set to close to minimal (probably around .5v). I have used similar set up for street and it works very predictably. with a target of 200kpa MAP I thought that using 90% up to 170 kpa would keep the wastegate fully closed until it was within 30kpa of the goal. should I use the final duty cycle instead? As always - trying to get the fastest spool up but maybe that is creating a control issue. I have tried the closed loop on some other set ups but it didn't seem to be a stable (probably not fine tuned well). do you find that the closed loop can do a better job? the full datalog file is 55GB, too big to attach. even the analysis file is 2.2Gb
  10. cwhite951

    boost control

    Yes, I meant to say spike up to 1.5 bar of boost, yes, it’s a .5bar spike over intended boost level. I don’t have an ecu log, I haven’t set up a data log button and they frown on lap tops in track cars!
  11. cwhite951

    boost control

    I am currently using a fairly basic open loop boost control with two tables and a rotary pot to select the boost level. seemed pretty stable until I got the canbus set up to my Aim dash (from Link) and an Aim datalogger. looking at the boost levels on the track its very consistent until I have a brief lift and then it spikes way over normal. I'm running 1bar typically and at just two point in the lap I get 1.5bar spikes. Its a 3.1l 944 turbo with Tial 44 wastegate and MAC solenoid. the spike is at the cursor - its just after the crest of a hill where I get a little wheel spin (see rpm trace) and have to lift briefly. any suggestions? better to go to closed loop? (if I can get some basic starting points). graph from Aim datalogger: cdw944t track base 06-10-22 r04.pclr
  12. cwhite951

    trigger issue

    to close the loop on this one - for what ever reason (best guess is that the breaker created some sort of the spike - but thats a stretch) both of the Cherry Hall effect sensors were fried. I initially thought it was just the crank sensor, after replacing it I had a trigger wheel signal but no cam synch. everything else is fine, just the 8v powered sensors failed, odd.
  13. cwhite951

    trigger issue

    OK - update, regapped the crank sensor and it is now acting normally on trigger 1 but cam trigger is nonexistent. I checked the gap on the cam sensor and its good, perhaps some sort of voltage spike took out both sensors? I have power at the sensor connector but no signal. I have been using Cherry GS100502 for years with out issues. seems weird to have a double failure.
  14. cwhite951

    trigger issue

    this is on my old i88 - been fine for years. got caught in a massive rain storm and the main 200amp breaker tripped (bad breaker i believe). eventually got it reset and drove off and parked it. hours later it would not restart. trailered it back to the shop. the crank trigger was not showing any life so I replaced it and the new trigger is showing 4.3v output all the time. Also kind of odd - trigger 1 looks like the cam trigger signal and trigger 2 is flat lined at 4.3v. no fault codes i have attached the file and the scope. any ideas? cdw968t 08-11-22 r0.pclr
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