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About 434josh

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    Advanced Member
  • Birthday 08/12/1978

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    Texas, USA

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  1. Thanks Adam. I figured that was possible for a single bump. Any ability to do a creep option? I have a standalone bump box (simple stage) that has a lot of adjustability however when taking it down to a reasonable amount of bump harshness i have to hit the button several times to move just a few inches so i was hoping to be able to get a creep/super fast multiple trigger even if I have to make the Link extreme feed into the simple stage.
  2. Would there be much interest in adding specific functionality of a trans brake bump/creep? I understand there probably isn't nearly the drag racer following here compared to other platforms like Holley or Megasquirt. I figure I could build my own with a SSR and a GP PWM output setting my own parameters but it would be nice to have along with the launch control setup.
  3. Here I was able to compress it and a drop box link if the .rar isn't good. https://www.dropbox.com/s/vlrfkguu36xsjkd/drag run.llg?dl=0 drag run.rar
  4. Thanks. I will shift the retard start point higher. The converter is flashing to 5800 as soon as I release the trans brake so I am not thinking that's the issue.
  5. I searched a bit and didn't see many questions asked about trans brake boost building setups. I have a turbo v8 with a 2 speed powerglide. I am using Launch Control settings as a 2 step which works but I can't seem to get the RPM I desire. I have it setup for 4000 rpm with a control range of 200 hoping to see 3600-3800 on the brake but I am only getting 3200 creeping to 3400 as I hit 6-8 psi of boost. Not sure if I am pulling too much timing too soon, if my overall settings are incorrect or if its a complication because I am using DBW. I did notice one of the logs the TPS was moving a bit but I didn't look at APPS to see if it matched or not. The log never shows launch limit as active. Is launch control the right item to use or should I be using anti-lag for this? I came from a Megasquirt ecu and it had Launch Control as well as a separate 2 step feature for what I am trying to do and it hit the mark right off the bat. Here is the tune. I can't upload the log as its 700kb+. Can I compress it or save a smaller section of it? Ford 363plus ve smooth.pclr
  6. I is the same as the original log/tune file above. I only changed the stage 3 to 10kpa, added some D and lowered target from 220 to 210ish kpa. I was much more active this time so I will try lowering. All in all this was so much better than before and stayed within 1-2 psi of target. This netted my fastest 1/8 mile pass to date and on less boost.
  7. In open loop the boost is solid at 17 psi. Just a lot slower getting up to peak. So i did what Adam suggested and its much much better. Doesn't overshoot like it was but does oscillate from 205-211 kpa throughout a pull and is enough it makes the rpm fluctuate a bit. Ignore the stupid high IAT...forgot to activate my meth injection system. 642 pass.llg
  8. Can someone look over this log file and included map and suggest some PID changes to stop the boost target overshoot? I can see them all working in the log - Integral steps on and starts reducing duty but it plateaus right when target is achieved and doesn't stop the overshoot. Log 2019-03-8 9;37;58 pm.llg Ford 363plus ve smooth.pclr
  9. 434josh

    Engine Protection

    Thanks all. This is perfect. I didn't have a ecu read fuel pressure until this week - just a dash gauge. I run staged dual walbro 450 pumps and had an incident last week where a ground wire was pulled loose and well..one 450 is only good for about 660 whp on e85 as I found out on the dyno. The operator got out of the throttle when lambda reached .906 at 6500 rpm and 13 psi. Its impossible to watch everything all the time so I wanted a built in safety for just this reason. I always know if my main pump is working since the motor won't run otherwise but the staged pump is a crap shoot. I will set it up as a map limit instead of rpm. My base pressure is 300 kps but it idles at 255 because I have decent vacuum and on decel it can get as low as 220kpa so I would be afraid an rpm limit might be harder on the motor but I could be wrong. Thanks again! One more question though.. My "fuel system" was setup as map referenced before today. If I change to FP Sensor will that alter my ve table fueling any? (provided things were setup correctly before)
  10. 434josh

    Engine Protection

    Is there a way to setup a safety around fuel pressure? I would like to have a safety that says if fuel pressure drops during wot acceleration i would experience an ignition cut or reduced boost. Possible?
  11. 434josh

    AE tuning with DBW

    I get what you are saying now about the APS vs load, so I will certainly abandon that idea and focus on the tps load resolution on the AE tables. As far as tps% it's a GM LS7 throttle body that's around 90mm feeding a 363" v8. Idle advance is 23° btdc. The throttle body is supplying all of the idle airflow and generally the lowest I see is around 14% and when cold around 18% to. The VE table is pretty spot on and uses very little cll correction, usually less than 3% in basically all driving speeds/loads but yes in throttle transitions there are very brief lean spikes and while tuning for this is when I paid closer attention to the clamp and rate tables and noticed my driving tps% was at or beyond the default taper settings. I will just play with sliding the taper over a bit to see if that helps. The AE is doing exactly what the tables are telling them to do so I just need to adjust accordingly.
  12. 434josh

    AE tuning with DBW

    So I was out doing a little AE tuning tonight after watching some of the Evans Performance videos. After I was watching the logs as setup in their video and since I am DBW and it's giving all the idle air, the idle tps is 16-19% and cruising at hwy speeds is 32-36%. The typical AE tables give more fuel enrichment, clamp, etc at lower % and less as tps increases. So I was wondering if I should swap the tps axis for APS to gain that resolution back. Would that be fine to do? Any issues that I am not thinking of?
  13. 434josh

    2step launch control

    FYI I installed the simple stage bump box and all the issues went away.
  14. 434josh

    Launch control enquiry

    Well it's set to Always On with a disarming speed of 35 mph. I would assume it will always be active below 35 mph based on those settings. I would make the TP low be above 0%, like maybe 10%.
  15. 434josh

    2step launch control

    So I have a positive triggered trans brake solenoid and that sake trigger feeds 12v to a digital input to activate launch control. All works as it should except when i let off of the button i occasionally have an instant loss of power like the coils stop firing for a nanosecond. The transbrake has to be used in reverse and occasionally it will stall when released. Would this be current backfeeding? I ran the same setup on my megasquirt ecu without the issue. I am in the process of installing a Simple Stage bump box which will isolate any backfeeding current but i am curious if you see any issues in the attached log. I did alter the retard table after this as I noticed it bouncing from neg to pos between 3200 and 3300. The first was just a stationary 2 step, second i released the button under load. 2step-brake 2018-12-29 3;13;48 pm.llg
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