It came in the tune like that, for pops and bangs, but i reverted the timing and ingnition maps to stock, and is still does it, sometimes 5800 sometimes 6000 sometimes 6200, i think im hitting a limit somewhere, it started doing it when i changed some axis for better resolution, the car pulls well and to that point just looses all power at once, i did notice one of the logs the PID went over the roof, i have more logs from today, and ill post the most updated bin later , as im in a christmas party now dont have my laptop here, anyway, im running 14 psi peak atm and 0.84 afr request at wot, the afr is following the requested line well so the fuel filter was the issue, also injector duty cycle is not 100% and not a single degree of timing pull so thats good.
I think i have a problem somewhere else.

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Its not a loss of power, its a brick wall, feels the same as redline, just lower, on the log, all values just drop straight down intantly, except one PID, i cant remember wich now, i also, i changed my timing and ignition values to stock and it still happens, so thats not it, ill post logs later

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Here is the logs from that run i was talking about.
And the Bin that was on the car..

I will start from scratch, but can anyone take a look, so we can understand what went wrong and not make the same mistake twice ?

As you can see in the log, 3rd Gear, starting at 2000, goes to 5800 and everything just stops, Boost, Fuel, Lambda, straight down, wastegate opens fully .. seems weird to me because in 2nd gear doesnt happen, could it be load related ?

I have the stock file from my ECU, and will start working on that, also reread the 52 page long post on stage 1 community cause i probably missed something.

All help is appreciated

Tomorrow ill log the car on stock file, any other variable i should include in the log ?
Im still using Me7, and not vehical, as it needs internet connection to start, and my cable is a clone and am afraid it gets blacklisted, i dont have a CD drive atm, so im waiting for the stores to open and buy an external CD drive to use the drivers that came with it

Im sorry, i was analyzing the log again, everything seems okay, Maf Reading is okay, Maf at throttle plate is a little lower after 5000 wich might mean a boost leak somewhere, injector duty cycle goes only to 95%, temps are fine, no knock, and Bar pressure is constant, i live in belgium, we're 20m above sea level, 1 bar is what we get and that seems constant, at 5800 everything drops, wastegate goes to 100% .. if the charge pipe was colapsing i think the engine would continue to try to inject fuel, keep wastegate closed etc just be starved of air ..

Im gonna go with Pjr on this one, as i really dont think this is an hardware issue either.
Something in the file is fucked. Either a Home Limp, soft cut, something im hitting that it shouldnt, could be due to a Torque Limit, Load Limit im not sure yet, as i need to dig deeper into this, but i do think my charge pipe is fine

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Okay i know its been a long time since last post, but the project isnt dead, I ended up using a silicone inlet pipe with a cone air filter, the problem seems to be gone

In the meantime my radiator was leaking so i bought a new one, and silicone coolant hoses, went to replace them and discovered that my front plastic frame was broken, and both my rad, and AC rad were bent, so i went to a junkyard and got a good frame out of another golf, replaced everything, new thermostat, coolant hoses, metal flanges, etc, i also have now a 4 Bar FPR in my garage that i am waiting to install.

I have since than ditched the last tune, i can agree that it was shit, since than i have read and read and read and have been working on something else, i was able to log 232 HP at 5950RPM and 390 NM (ECUxPlot calculation with the constants for MK4), no knock retard, im able to rev all the way to 6800 RPM no problem no cuts no nothing, i have since than also removed the pops and bangs, i Have HardCut but thats about it, it seems tough that i am Maxing out my IDC, thus my AFR goes leaner in the top end, not by much ( from 0.82 to around 0.90 as soon as IDC goes above 100%, the tune is quite agressive and boost is capped at 18 PSI Peak and holding 13 PSI, My Max Timing advance is 24, but i have questions, because the more i read the more confused i get.

I am going to reflash the Stock file again, to calibrate for the 4Bar FPR, and than reapply the changes i have done above to the 4 Bar FPR file.
For my 4 Bar FPR, what exacly needs to be changed ? KRKTE, KVB, do i need to touch TVUB? TEMIN and TEMINVA ?
I want to keep the stock 317cc injectors, but increase the fuel pressure to 4 bar to give me the extra 15% i need not only to maintain AFR but to give some breathing room in case the ecu needs to enrich, At 4 Bar my injectors should be 366cc
Would simply changing KRKTE and KVB be enough ? or do i need the other maps too ?

Edit, i have found multiple calculators, all give me a diferent value, 2 are .exe and it is said in the topic they are not calculating properly, than i have at least 5 excel files, with 2 differences that i noticed, in the constant of n-Heptane, 1 is 0.694g/min and the other is 0.684g/min, wich one do i follow ? i use Shell V-Power RON98 with 5% Ethanol

Your stock is the same as mine, 0.10301

So far from the calculators i have a few Possible Values:

0.0921057714946055 with 5% ethanol fuel

0.0890283345582394 from an older 2010 calculator

And Me7TunerWizzard gives me a 0.08941

How is your fuel trims ? I might go with the 0.92

Also was anything else changed ? I know i Need KVB for my MFA to count properly, but what about Tvub Temin and TeminVA ?


EDIT : Alright im going to install the 4 Bar FPR, and tune KRKTE, drive 30km and log my fuel trims, and adjust from there and hopefully that is all i need, on S4 wiki also doesnt mention anything about the other maps just for fuel pressure, also on another topic i was reading say that for FPR i just need to change KRKTE (i hope im not wrong)
Any tips from more experienced members would be helpfull

If KVB is 317 and you have a 3 bar FPR then the injectors are 317cc/min @ 3 bar.