Block 115

[s4rmm]

Did some logging, to see how actual boost compares to requested boost.
Here's the output (Engine speed, Engine load, Spec'd Boost, Actual Boost):

1480 24.1 990 980
1520 28.6 990 980
1720 83.5 2230 990
2040 102.3 2320 1110
2560 131.6 2310 1410
3400 191.7 2400 2230
4120 186.5 2420 2040
4760 175.9 2450 2010
5400 169.2 2420 1990
6000 151.1 1550 1900
4960 16.5 2170 1170
4240 190.2 2470 2230
4520 184.2 2450 2150
4840 180.5 2460 2140
5120 176.7 2450 2120
5440 169.9 2430 2070
5680 163.9 1450 2000
4360 105.3 2450 1080
4560 184.2 2490 2240
4720 187.2 2480 2240
4880 185.7 2480 2240
5040 178.9 2480 2240
5200 176.7 2460 2190
5360 171.4 2470 2160
5480 168.4 2480 2110
5600 163.9 2450 2100
5720 163.2 2450 2020
5840 156.4 2430 2060

Is this difference too big? Does it mean it's leaking?
The car has chip (Fastech) and 710N DVs, no other mods.
Did FATS test too (Timestamp, Engine speed, Engine load, Injection time, Mass air flow):

0.59 3040 106 11.22 105.14
1.05 3320 185 19.04 202.56
1.59 3600 190.2 19.38 195.33
2.24 3920 183.5 19.38 204.89
2.74 4240 175.9 20.06 219.44
3.26 4560 175.9 21.42 233.22
3.82 4840 180.5 23.12 254
4.41 5120 175.2 22.78 263.53
5.04 5440 166.9 22.44 265.36
5.65 5720 160.9 21.42 267.56
6.22 5960 153.4 19.04 265.08
6.86 6200 147.4 18.36 266.56
7.45 6440 142.1 17.68 265.58
8.12 6640 136.1 16.32 263.17
8.77 6800 133.8 15.64 265.36

Time is 4.97; think it's ok with just a remap. Or not?

[JonnyX]

Erm, your boost looks way too high to me. Your ECU is requesting
1.4 bar at nearly 6000 rpm. I don't have a compressor MAP handy, but
I think that's way out of range of the K03. You are not even getting
close on actual boost.

[Paulm]

yeah way out, If you work out the flow 1.2 bar is pretty much the max @ 6k even that is pushing your luck.

[confusionhunter]

Yep..... there is something wrong there....... You map is asking way to much of the turbos..... and this still wont show you whether you have a boost leak.........
If you've got a boost leak then its a ticking time bomb before your turbos go pop......assuming you do actually still have KO3's. If you have KO4's then you have a serious boost leak!

As a comparisong My MTM map with KO3s
asks for (and gets!) 1.2 bar at 3800 revs and 0.89 bar at 6000 rpm....

How old is your chip and did you get the remap from the supplier direct?
If you did Id be inclined to ask the tuner what materials he thinks the KO3's are made from?

[DavidT]

K03 cars usually run 0.8 bar (12 psi) at 6k and .7 bar (10 psi) at 7k. My MRC one did anyway.

Those numbers look very high.

[confusionhunter]

Meant to add..... yes thats a very good FATS time with just a chip effectively but your turbos are totally maxed out all the time..... may as well throw your wastegates and actuators away and save weight
Cheers.
Mark.

[Paulm]

I would say you deffo have a boost leak as the turbos will make over 1.4bar they just wont last for very long. Looks like your ecu is asking for loads of boost and your turbos are flat out trying to over come the leak as they will make 1.4 bar low down the revs.

Or you have k04's. If so 1.4 bar is about right but you still have a boost leak

[s4rmm]

How old is your chip and did you get the remap from the supplier direct?
If you did Id be inclined to ask the tuner what materials he thinks the KO3's are made from?

I've been running with this chip about 4 months (5000 km).
It's from Fastech tuning, http://www.fastech.de/Tuning/audi/a4_id/A4%20(m).html, racing version 345hp/510Nm. I've been told it's meant for standard hardware (K03s), but that's all I know about it. I emailed them, wanted to know how they achieve this much power compare to other stage1 chips (ca 310hp/500Nm), but got no answer.
If it's that bad for the turbos, i'll have to replace it with something more reliable. And check for leaks - you all seem to think I have them.

[cpufreak]

it does seem rather high.

my revo remapped car is doing 4.75second fats runs, without really going above 1bar of boost:

Group C: 115
Engine speed Engine load Spec'd Boost Actual Boost
TIME 990-1800 mbar <=1800 mbar
STAMP /min % mbar mbar
382.01 1920 12.8 1020 1050
382.91 1960 48.1 1020 1040
383.82 2160 109.8 1770 1200
384.73 2600 168.4 1800 1750
385.63 3120 176.7 1920 1870
386.54 3640 174.4 2040 1930
387.45 4200 177.4 2060 2000
388.4 4760 173.7 2020 1990
389.41 5320 162.4 1950 1920
390.48 5840 154.1 1880 1850
391.57 6280 144.4 1810 1820
392.71 6680 135.3 1740 1760
393.84 6720 12.8 1020 1690

[s4rmm]

Can you tell just by reading block 115 that you have a boost leak?
How much the actual boost may differ from requested boost?
And if there is a difference, this can only be from leak? No other possibilities?

[JonnyX]

Can you tell just by reading block 115 that you have a boost leak?
How much the actual boost may differ from requested boost?
And if there is a difference, this can only be from leak? No other possibilities?

You can normally get an idea by the deviation between requested
and actual and the delay it takes to get near the requested.

Basically, get it to a garage that can pressure test the intake.
Highly recommend MRC for this (www.mrctuning.com).

[Dippy]

How old is your chip and did you get the remap from the supplier direct?
If you did Id be inclined to ask the tuner what materials he thinks the KO3's are made from?

I've been running with this chip about 4 months (5000 km).
It's from Fastech tuning, http://www.fastech.de/Tuning/audi/a4_id/A4%20(m).html, racing version 345hp/510Nm. I've been told it's meant for standard hardware (K03s), but that's all I know about it. I emailed them, wanted to know how they achieve this much power compare to other stage1 chips (ca 310hp/500Nm), but got no answer.
If it's that bad for the turbos, i'll have to replace it with something more reliable. And check for leaks - you all seem to think I have them.

As Fastech state on their site - yours is a Racing version. That means the remap compromise will be at the expense of reliability. 510Nm is not a particularly high peak (I had 515Nm at stage 1 and now have 560Nm at stage 2). However 345PS (which is about 340bhp) peak is high for a stage 1. I assume that you don't have a free-flow exhaust system, because if so then it means that their remap tries to reach 340bhp on a standard car by using a lot of boost.

If this is true then maybe you don't have a boost leak, but either way your turbos are being stressed.

[s4rmm]

How old is your chip and did you get the remap from the supplier direct?
If you did Id be inclined to ask the tuner what materials he thinks the KO3's are made from?

I've been running with this chip about 4 months (5000 km).
It's from Fastech tuning, http://www.fastech.de/Tuning/audi/a4_id/A4%20(m).html, racing version 345hp/510Nm. I've been told it's meant for standard hardware (K03s), but that's all I know about it. I emailed them, wanted to know how they achieve this much power compare to other stage1 chips (ca 310hp/500Nm), but got no answer.
If it's that bad for the turbos, i'll have to replace it with something more reliable. And check for leaks - you all seem to think I have them.

As Fastech state on their site - yours is a Racing version. That means the remap compromise will be at the expense of reliability. 510Nm is not a particularly high peak (I had 515Nm at stage 1 and now have 560Nm at stage 2). However 345PS (which is about 340bhp) peak is high for a stage 1. I assume that you don't have a free-flow exhaust system, because if so then it means that their remap tries to reach 340bhp on a standard car by using a lot of boost.

If this is true then maybe you don't have a boost leak, but either way your turbos are being stressed.

That's what I was hoping for. No leaks (maybe), just high requested boost at high revs. This isn't good for the turbos, but I don't drive above 5k+ rpms very often. In mid-range revs it's probably similar any other chip.
And in case of leak(s), there should be DTCs in the ECU. Something like boost pressure exceeded, which then sets the car into "safe mode". But I haven't seen any DTCs.
Thanks anyway.