john.z
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Posts posted by john.z
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49 minutes ago, Bill said:
Turning on turbo logic scales the factory turbo TMAP sensor
Yeah I got that, but is there anything else?
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starting to tune my TT FG XR8, going through the parameters to change. I've been told to enable Turbo Logic but i want to understand why? what does it achieve?
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On 2/26/2021 at 1:13 PM, Milanski said:
Im putting it down to ford dot-to-dot and long chains causing some cams to be out by as much as 7% from some builds being reported. Its a new engine about 30,000km. New injectors. When I get time I will swap the injectors from bank 1 to bank 2 and see if the problem had shifted.
I agree with this, ive ruled out everything else- fuel pressure, injectors, intake/ exhaust gasket leaks, exhaust cracks or pinholes, compression, leak down, spark, wiring etc. the only thing it could be is cam timing
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On 2/21/2021 at 11:15 AM, Darryl@pcmtec said:
LTFT is a better measure of how well the fuel system is working. As the LTFT tends to 1.0 it means the area where this is happening (RPM and Load) has good data (Injector data, speed density, ...). Below 1.0 it is richening the mixture and above 1.0 it is leaning the mixture.
is this right or is it the other way around? in the injector scaling forum when your histogram showed below 1.00 values you said you needed to take out fuel as the slow slope was far too rich?
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2 hours ago, Roland@pcmtec said:
Try logging F_A_RATIO[0] F_A_RATIO[1] instead as this is effectively the STFT per bank, we have never had a v8 test car so this stuff has all been developed for the 6 cylinder. The Pulsewidth calc is copied and always identical for the two banks as its actually done on a per cylinder basis and the bank reading is not really used for anything useful internally that I can see.
There are actually 8 pulsewidths you can log, one for each cylinder. This is what is really going to the injector. These are logged as FPW[0], FPW[1]...FPW[8]
None of those show up. I’m using professional, they only on workshop?
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also i cant log STFT for both sides?
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aren't the first 15 already set as high priority? if so here is my first log after adding the 1000cc injectors
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okay ill get that through tomorrow
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noticed throughout my logs that there was no difference between the pulsewidths on either bank, it seems to be just recording bank 2 and reporting that as both. which expains the weird plot. LTFT and fuel flow show up right though. Is this just an oversight in PCMTEC datalogging?
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32 minutes ago, JVK said:
Did you try swapping the injectors from right bank to left just to rule out an injector issue ?
Happening with the stock and the new injectors.
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new intake gaskets fitted, exhaust resealed, checked for other leaks, fuel pressure is solid, compression is perfect, new spark plugs and more. still the same. this is my logging for fuel injectors. wtf is happening?
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@Roland@pcmteci should be able to log for individual banks yes? not sure why but this is how it came out. It's fuel flow bank 1 doing it
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Still trying to understand why some changes were made, could someone explain the effects of changing this table? (tuned for cams, and the usual upgrades)
and why these were just changed to 1?
other cut limits were all set to 0
to correct the LTFT's that are out below, would i use that first table above?
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1 hour ago, lukapuka said:
I had this problem after fitting catch cans to the rocker covers. The rubber seal on rocker cover had split on the pcv side and was sucking air in.
My catch can vents into the boot before the throttle body, so not the case for me
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Yeah mate, swapped them around and re calibrated, no change
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Honestly I never noticed it until I fitted the wide band. The car ran perfect. Even with cams it idles great, never stalls (manual) never hesitates and it’s power and torque is greater than others I’ve seen. Fuel economy is great.
I fitted new o2 sensors the other day and it turned to crap, drivers side was running 17-19 afr at idle and it would stumble. Put the factory ones back in and it went back to how it was -
2 minutes ago, Roland@pcmtec said:
That is interesting and makes sense.
I would simply follow every single suggestion in the thread. If you do all of the settings I can't see how it could possibly still trim.
In every car we have tested on we can successfully disable LTFT with any of the settings on their own.
If someone has one where it will not disable and can be made available via teamviewer during business hours we can log in and see if we can figure out a concrete way to disable the trims. We can then report back how to do it on here for everyone else.
It’s no big deal, just need to touch the throttle when the car first starts so it makes no changes. Easy price to pay for only needing to change one table
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Checked fuel rails when I changed out the injectors and reg, car is a daily so always fresh fuel flowing. As for leaks, I’ve checked multiple times and come up with nothing, intake gaskets look fine, exhaust has no leaks. Got me stumped
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The drivers side runs leaner than the passenger side. Closed loop mostly corrects it, but closed loop disabled or full load i can see a difference as big as .15-.2 Lambda. I have ruled out my wide band sensors (switched sides, recalibrated etc), new 02 sensors didnt help (actually made it worse at idle) and the effect is the same on different injectors. is there a way to correct this?
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On 11/23/2017 at 1:27 PM, Roland@pcmtec said:
UPDATE:
on FGs the best way is to just set the A/D Count to 0.0 on the Open Loop TPS Transition table auF0153 as the above tables have been reported to not work on FGs
funny thing with this is if you start the car and dont touch the throttle it will go into closed loop until you do
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Ive just fitted 1000cc injectors, the only info ive received is a dead time of 1.59ms @ 12V and 3 Bar. running 4 bar, how should i be scaling this? what ive currently done is entered in 1.49ms @ 12V and moved the whole voltage curve the same difference. Is that the wrong approach? It's a cammed boss 290. Got it running alright, there is a slight hesitation while cranking after the first fire, but never struggles
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On 6/29/2021 at 3:41 PM, galapogos01 said:
Confirming this clone sensor does use the factory Turbo transfer/scaling. Cheers, Jason
just checking, was that a question or a statement?
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fitting a bf 2bar map sensor to my fg xr8, what do i need to change to go about this? i cant find any info on the voltages so i dont know what to change the slope or offset to. Its the clone 2 bar map sensor off T.I Performance
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looking again, both are showing the exact same thing effectively?
Turbo Logic fuction
in Engine Tuning (AUS)
Posted
So what should I be doing in my case with a non turbo ECU, no boost controller and no boost sensor? Do I turn it on and not worry about them or do I leave it off and just enter the tmap values in manually?