All Things Mk5 > How to Guides / Troubleshooting
Troubleshooting - what is 'load control'??
vRSAlex:
The K03 just cant always make requested. The load will ask for max, but the turbo can produce max load throughout the whole rev range. Just as if you logged boost requested vs actual. I get full fuel pressure throughout so it may be worth checking the follower and changing to an RS4 pressure return valve. It looks like you are getting a small flat spot around 5.2k which is then picking up again. Its also interesting that you have an autotech pump fitted? Im worried that these are causing the flatspots on 2+ cars.
muckipup:
Thanks Alex,
I have certainly considered the RS4 valve although I am not seeing anything with the rail pressure that would suggest that the actual rail pressure is venting before it gets to the requested rail pressure. I still haven't ruled it out but am delaying partly because I want to suss out this 'load control' thing and partly because it is an awkward job to fit the valve.
Do you know what the engine senses when measuring actual engine load i.e. what sensors come in to play?
Anyway, on the subject of load control, I logged it with several runs last night including 2 fourth gear pulls and I see the same thing (the graph in the O.P. was a 3rd gear pull, this is 4th).....
Rich - I also logged rail pressure, lambda, boost and MAF (and misfires which were minimal so not uploaded). I didn't log timing pull but previous experience showed that to be healthy too. The full 130bar of rail pressure from the Autotech HPFP comes in a bit late in the rev range (do others get the full 130 bar mid-range??) and the MAF seems a bit below what I have seen with others on a Stage 2+ car but doesn't look horrific...It's that load control that has me foxed!.....
:confused:
Richn83:
Hmmm Something doesnt look good with the air mass flow, again mine is a standard car but dont think you should be seeing such a drop off in requested boost and air flow. Have plotted my results for boost air mass flow and load.
I guess the question is is this something that was programmed or is the ECU pulling something back?
since the key has been chopped pink is boost specified, yellow boost actual, purple load specified, dark red load actual.
vRSAlex:
What intake and intercooler are you running on the car?
vRS Carl:
--- Quote from: muckipup on November 30, 2010, 10:55:15 am ---The full 130bar of rail pressure from the Autotech HPFP comes in a bit late in the rev range (do others get the full 130 bar mid-range??) and the MAF seems a bit below what I have seen with others on a Stage 2+ car but doesn't look horrific...It's that load control that has me foxed!…..
--- End quote ---
My car requests and makes 130bar (or thereabouts) from around 2800rpm onwards using Autotech internals
As shown here
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