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Rob W

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  1. Rob W

    Subaru Idle Fueling Issue

    Awesome you blokes. Seriously. Thanks so much for that I set up the ECU hold time as advised. Went back through the open loop idle procedure. The clamp table needed about 90 points taken out of it at 80* so it's back to where it started from a couple of years ago. Rock solid at every intersection. So far so good. Now I might have a half decent chance of setting up the closed loop idle.
  2. Rob W

    Subaru Idle Fueling Issue

    Righto. Thanks. Yes it is v5/6. I set the alive time to five seconds.
  3. Rob W

    Subaru Idle Fueling Issue

    Well. You blokes are awesome. No wonder I've been chasing that stepper motor around for the past couple of years. I realised that it reset on key off but the ECU Hold Power had not computed. I have set up AO5 as Ecu hold power. The DI was already set up with ignition switch. At some point in time I was adding fan step to stop it stalling when they came on. Initially it was set to 6. This table here seemed to com as part of a firmware upgrade and has never been populated. Any suggestions? I have made all the changes suggested and will get the car out and see how things go and report back with good results or a new log and tune file
  4. Rob W

    Subaru Idle Fueling Issue

    When i put the ID,s in it I put the figures in the SPAT and it wasn't real happy so i cleared it back out. But i can try those again now. Im not sure about the hold time issue but now you mention it I'll look into thst further. Can you give me an insight into how that should be?
  5. This is becoming rather annoying. Engine is a ej25/20 hybrid with 8.2:1 comp, has ID1000X in Radium fuel rails and BC272 cams degreed to advertised specs. I am using a Ballenger AFR500 wideband which seems to be slow to come out of lean condition on overun and start up but other than that the guage reads as per the laptop readout. It is in open loop idle. Closed loop fuel is turned off (it didn't help with this issue) Idle ignition control is on and generally works very well as set up. I have some extra fuel in IAT correction at higher ECT/IAT start up 0%TPS but is not affecting for this log. I did do some work with the charge temp table to try and work around this but it wasn't really helping so I put it out of the equation. I've been spending time on the overall fueling and accel enrichments which I am reasonably happy with at this point, getting it ready to put on a dyno and optimise the set up. The cruise and WOT fueling is consistent at higher MAP and RPM. The issue I'd like another set of eyes to help with is an idle issue that has developed. Once I go to 0%tps it starts to richen up dramaticaly and the revs drop and sometimes stalls out. Pulswidth seems to increase for no apparent reason and just dumps fuel in. Then the MAP starts to jump about. It's not all of the time. I can start it up and have it be fine, although the lambda is not always consistently the same each time under similar conditions. The Idle Air Control Valve is 20 years old its a 1999 wrx. The idle clamp required at 80*-90*c is 90 points higher than it was a couple of years ago. So clamp was around 200, now its up around 300. The MAP sensor is relatively new 3 bar GM style. Not sure if it's a vac leak when warm but I've been over it all a thousand times. Or if the IACV is not good enough to catch it anymore or it's an issue with the MAP sensor. Or if it's tune related. If anyone can have a look over the log and tune file and can see what might be happening with the tune and/or mechanically that would be much appreciated. You can see from 55:20 approximately where the issue is really bad and I've had to tickle the throttle to catch it. There are a couple of other places in the log there where you can find idle and see I've had to do the same thing https://1drv.ms/u/s!AsYB-OUQHJQzzmCWxykRzAR8sPEQ?e=CvaB22 https://1drv.ms/u/s!AsYB-OUQHJQzzl-lRWqKN5kMUnxJ?e=wsXDhV
  6. Hi, I'm trying to permanently delete the bulk of a 55min log file so as I can put a two minute section of it on here for some help with an issue. In the log file manager it will let me delete the section but it will not disappear from the navigator and when I save the file it is still there. I have been all through the help files and followed to the letter but it is not doing what I want it to. Alternatively, how does 'drop box' work? Rgds Rob W
  7. Are the values in the Accel Clamp tables multiplied by the values in the Wake Up Load Correction table as it moves through the load sites in the wake up table or does it deliver the value and multiplier from when the throttle is first pressed. So lets say I press the throttle to the floor at 2000 rpm with values of 40 and 1 at 0 MAP as I move through to say 5000 rpm with values of 10 and 0.5 at 20 MAP would it be returning 5% enrichment at that 5000rpm 20 MAP point or would the 40% commanded at 2000 rpm be decaying?
  8. Another one? What would the injector flow rate be at 43.5 psi for ID 1050x. There is g4 characterization data on the ID website but no specific to ethanol
  9. Thanks Adam. I'm working away so can't respond to this as often as I'd like. Does the Density Temp Coefiicient make a big difference? Can you show me the equation to do the calculations
  10. Bugger. I was hoping that would not be the case. I couldn't work out how to do the calculations. My BP 98 petrol here is 14.4 stoich. I have been trying to google the information to no avail.
  11. I'm looking to run E30-E40. I don't have enough injector or pump to go full E85, so I won't be tuning the second fuel at full strength for the tables to extrapolate between in the blend table. The Link help files give all of the fuel density, stoich ratios, etc for E85. So lets say E30 is going to be my second fuel would I tune the car on E30 and set up the Multi Fuel Blend Ratio Table so that everything over E30 is at 100% and leave the known ethanol properties in the multi fuel table.
  12. Simon, seriously mate, take the Horsepower Acadamy courses. You already seem to have a fair idea what you are looking at. HPA will simplify the whole process for you, break it down into a couple of main areas and give you the skills and confidence to slowly sort out this nightmare properly yourself. Not only will you gain a fuller understanding of fuel and ignition requirements, all your trims and enrichments, boost set up etc, they also do full video demonstrations on all aspects of tuning on many different platforms and those videos are available to watch over and over.
  13. Pity no wideband. Would help tell you the full story. I wouldn't worry about retuning it all if your happy with it the rest of the time.
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