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Plumbs last won the day on December 10 2022

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  1. Ok thanks for the reply, I’ll look into the other torque requesters that u have said . cheers .
  2. Hi All, While away on holidays loaded to the hilt with a dog in toe too! 6 hours of driving (on 1 tank of e10! near 500 km's) with also jusy holiday driving around. My Lovely wife was complaining about a few things about the car! Had troubles with hot starts and stalling in gear from idle to a quick stab with the fg throttle body etc . I fixed these after a lot of head scratching, but that's for another thread! But main problem was, even with trying to compromise on the s5 globals. Just normal driving in traffic would produce very stiff gear changes and again, sore necks. It was a problem, as the Wife was just not enjoying driving the car in traffic. Ok on the highway, but horrible in a Surburban aeras. Ok I came up with a solution, but @Roland@pcmtec just an idea! Could we have part of a custom tune for btr cars that we could have the s5 duty cycle tied into load eg load v duty cycle and maybe even with rpm cells to 6000 rpm? Just a thought. Ok, so the solution I came up with was basically, I just went 100 % in all of the fields in the torque reduction tables. And it worked! light throttle conditions u can feel retard spark come on during the changes and nice quick and softer changes! I'll post pic of tables below, individual cars may need fine tuning, but have a try?
  3. @Bill found it and posted pic for anyone wanting scale their injectors ! Cheers .
  4. Hi Puff , can u use open loop to close loop trans to force open loop by changing out the table to 500 ad counts ? ( ad = analogue to digital) or is there a switch like you were saying ? I had a look but couldn’t find anything? Also how do u set up your breakpoint as well ? Regards Graham.
  5. Also don’t forget to change at stoich to 14.7 for 98 . Some one must have done this to cheat the injector data ? Thanks Puff for above !
  6. Ok, can u help me explain Puff and see if I get this right? for injector scaling, if you don't know the info there is a way to get it close. Hopefully I get this right? You will need a wideband af gauge. In open loop which is going back and forth from about 14.5 to 15.3. So at idle adjust your low slope till you get stoichiometric which is what is being commanded on your base fuel table. Maybe best way is to drop your boost spring to 7 psi. In the turbo smart actuator there is 2 springs a big one and a small one. Can't remember which one? but tuning at 5 or 7 psi (5+7=12) is a lot more forgiving than at 12. once that is sorted get your duty cycles to gate pressure (5 psi is better). Learning with less boost is best! Force into close loop lambda eg .80 or about 12:1 is what you are looking for. So, try short pull about 50to 70% throttle come on boost about 3 to psi and see if the fueling is what is being commanded? trial and error. Keep mucking with your low slope, breakpoint and then work up to high slope runs with more boost. Thing is not sure with those injectors whether you will see it go into high slope till u get into more boost because of the size of the injectors and also when your breakpoint is set? Your speed density should be sweet, so if you get your injector data to what you're commanding you will be right. Must be very careful and build up on your runs and boost. I think if you can get the injector data from the makers at 4 bar (the pressure of a turbo fuel reg) this will make the whole process so much easier for you. Datalog everything, watch out for knock and just trial error from there. Sometimes it's easier to do than for me to explain especially as I've only been tuning at ammeter level past 12 months, but I love to try and help as I was in the same spot. Am I Close Puff?
  7. Yeah , what he said ! Honestly! Puff is one of the best around here ! I’m glad he jumped in ! I’ll sus out your timing but if puff has looked at it . Must be alright! regards Graham!
  8. Hi Mate , I tried this and it worked grate . But I had to adjust the breakpoint by about 20 % . Otherwise it would hold the low slope and cause a lean out and afr warning on my gfb3 controller. Since gone back to stock . Just muck with the o2 offset number in fields that the rpm would be in cruise first . Then do some partial boost pulls with an af gauge and adjust the breakpoint . regards Graham. ps I’ll get to look at your vct overlap . On holidays now so have time !
  9. Hi , yeah just gone through this with a car about the same age.
  10. Sorry for the late reply, on holidays lol! All good ! yea like what car xr6 turbo ? What year ? What trans ? what injectors , intercooler , fuel pump , head studs , oil pump gears etc ? What’s your goals too? regards Graham.
  11. Hi Chris , none of the torque reduction tables are at -19 deg. The pcm uses the traction control function to facilitate gear changes via the torque tables . Sorry I should’ve done this at first . Here is the link in how to set your traction control? https://forum.pcmtec.com/topic/241-howto-traction-control/ Otherwise right now , when u change gears under full pedal and boost . The motor actually cuts out . This is annoying to say the least ! Because that healthy cammed LS commadore is just about to drive around you lol ! Or BMW ! ( up to the speed limit of course! ). As the turbo despools and looses boost. Just follow the torque red tables that I have here and try that . You will see the aggressive traction control. Then adjust your traction control as per the link above . regards Graham! ps Merry Christmas 🤶
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