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will15

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Posts posted by will15

  1. What in the tune can cause boost sensor codes p0236 boost pressure sensor, p0238 boost sensor circuit high apart from over boosting which it’s not. We have tried a nother sensor, I know it could be wiring to. I was just wondering if some thing else tune wise can cause this, it had been tuned and running good for about 3 months  prior to the codes.

  2. I’m more then likely going to have to tune this car after some issues are fixed, I have sucked the tune out to have a look at it and it come up with a note saying I have to license it before I can look at it or tune it. (Please see attached pic)

    I think it is a sct flash tune will it definitely work?, just don’t want to waste 3 credits on it to find out I can’t do it.

    616511FA-A2DC-4345-86E1-7E4AC6260219.jpeg

  3. Yes it is commanded afr not wide band, I don’t have a wide band in the car at the moment. But I can see the narrow band o2 go lean when the ecu commands this and the car will stumble and nilly stall when I’m driving up the road at about 40km. I can get a lot of it happening but I’m using hp tuners for the logging.

  4. 2 hours ago, Roland@pcmtec said:

    When does it command 1.2 lambda? There should be a hard limit at 1.05 lambda.

    I’m tuning to cars at the moment and they both do it about 30sec to I minute from cold start around 23 deg coolant temp.

  5. I’m  getting it a lot better, but the only way it works is to use the PIP table backwards then what you guys have said.  Say the PIP table is stock and I log cold start inj timing will be say 10ms, then I half the valve in the PIP table inj timing will be 5ms. So then I double stock value it will be 20ms. It seems to work well so I don’t know. Then only other problem is about 40 seconds in to a drive after cold start it will command 1.20 lambda and stumble.

    I have gone though every table I can think of and it still dose it.

  6. On 4/13/2019 at 1:18 PM, Puffwagon said:

    Try doing this below, or a variation thereof.

     

    QstuHNs.jpg

    This table definitely makes a big difference in commanded lambda, helps stop the stalling when cold and you put the can in drive or reverse. 

    • Like 2
  7. I just tried that pip crank table as stock, the car has not been started today with 17deg  ambient temperature and it took like 5 go’s for it to start. It was starting first kick with the high numbers in that table at 17 ambient temp

  8. 5 hours ago, Roland@pcmtec said:

    Yeah that will make it lean during cranking for sure

    So smaller numbers is richer?, I was thinking the other way. I don’t really understand your  explanation of how the table decays form commanded lambda from very lean to the actual commanded lambda

  9. So didn’t start first kick this morning but did on the second, so it is better. I think I’m missing a table that is stopping me commanding the afr I want but. Say you at 15 deg engine coolant and I have set 0.75 lambda, with in seconds of the engine starting it go’s straight to 1.0 lambda.

    Is there some other table that could over ride all of the above fuel tables that have been discussed above?.

  10. 1 hour ago, Puffwagon said:

    It's a fairly easy thing to check, providing that it's winter. I've halved the cranking spark from 10 to 5 on a different motor and it started better like that on e85, with 10:1 initial afr.

    You'll get several goes at it if you don't mind getting up at 4 or 5am and trying every half an hour with just a 20 second run time. Bust out the garden hose to cool it off too if needed.

    haha now that's dedication, I think iv made some head way with this I have increased spark to 15 and upped the crank multi a shit tin and it busted off first crank this arvo. I will check in the morning and see how it is should get down to around 10deg tonight so see what happens. I did adjust the auf1721 and have noticed that with the flex fuel os there is no blend table, so will see how that go's when I finish tuning the other car on flex.

    • Like 1
  11. 23 hours ago, Roland@pcmtec said:

    Play with these

    ...

    The numbers in the example above work ok as a base, but definitely need further tweaking. I have it starting first crank at 8°C in SA however at ~16°C it takes 2 goes, unsure if it needs more or less fuel as its been too warm to properly test. I will optimise it this winter and possibly do a proper write up then.

    I have pretty much adjusted all those tables, it just felt like I was going way to far with them, eg to rich. Ill do some more testing, just sucks only getting a couple of shots at it per day

  12. 4 minutes ago, Sam said:

    I would try increasing your spark advance instead of decreasing as E85 burns slower than what 98 would. 

    haha ill try it the other way, iv heard conflicting things on timing for cold start with e85

  13. 4 hours ago, Sam said:

    E85 will burn differently to what a gasoline fuel will, therefore I would suggest adjusting the the tables relating to cranking spark advance (auF0209 & auF1721). Those two tables along with the tables you have already adjusted should be able to get the car starting relatively well, there will be other tables you can adjust further refine that. But with those tables you should be able to get it starting well with the standard OS.

    I did auf0209 this morning before I saw your post, dropped cranking from 10deg to 5deg, didn't really help.

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