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Technical Topics B48 4-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications TDI Tuning CRTD4 dyno results

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      01-31-2020, 07:04 AM   #1
AustraliaG20
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TDI Tuning CRTD4 dyno results

Hi all,

I have had this installed in my car for a couple of months now (TDI Tuning CRTD4). I managed to get a couple of dyno runs at completely stock, their Mode 1 (low power) and Mode 7 (high power). This is their datasheet outlining their results.

So, what the advertised amount for kW (at the engine) is:
Stock: 190kW
Mode 1: 219kW
Mode 7: 234kW

How did I actually go? First a few disclaimers.

1. It was the WORST conditions to do dyno runs. The ambient temperature outside of the shop was 43.5 deg C (110 deg F). Inside the shop, the car was register 47.5 deg C (117 deg F) during the runs. The dyno temp was measuring around 38deg C for corrections.
View post on imgur.com

2. The air is horrible.. we have significant bush fires in the area (State of Emergency etc) and the air pollution is also significant.
3. We tried to allow the car to cool between runs (as much as possible), fans etc. But there is only so much. The conversion factor is outlined on the results.
4. Air intake temp was relatively consistent on the runs at around 66 deg C (150 deg F). Ie. Hot.
5. 600m above sea level. So air pressure isn't great either.
6. It is a Mainline dyno - generally considered to read lower than others. It says kPa for manifold pressure on the printout, but it's psi.
7. 98RON fuel.
8. Runs were in 6th gear, up to 240km/hr (on the dyno). The dash went past 260km - clearly not overly accurate!

Because of the above, I'm not actually interested in the overall power rating, but more the percentage increase over the run and other settings. Timing, AFR, Boost, etc to just get a feel for what the re-map is doing, if it's 'safe' and if it comes anywhere near the advertised figures.

So the results... see the print outs (there was at least 2, if not 3-5 runs at each setup)
View post on imgur.com
.

Short version.

Stock: Advertised 190kW (at the engine) : Dyno ATW 179kW
Mode 1: Advertised 219kW (at the engine) : Dyno ATW 178kW
Mode 7: Advertised 234kW (at the engine) : Dyno ATW 186kW

Definitely looking for some comments. However, what is interesting for me:

1. The numbers are way off for max power. The increase isn't even close to 23% as advertised for Mode 7, it's closer to 4%.
2. Mode 1 was almost exactly the same as stock. There was almost no difference in anything that we could measure.
3. In Mode 7, the power curve is noticably better. The boost pressure comes on earlier, and that is felt in the car. That's nice to see.
4. The boost pressure isn't changed at all.
5. The AFR reads richer, with the same boost pressure, but makes more power in Mode 7. Not sure how that works?
6. Did the high temperature just override a lot of the settings? If I get the time, I may take it for a run in winter when the temperature is more pleasant.
7. In the end, I'll leave it on Mode 7 and for the improved power band I'll take it. I was never expecting miracles, and the fact it is easy to attach and remove, and is undetectable at servicing it is quite handy.

Anyway - comments?

Last edited by AustraliaG20; 01-31-2020 at 07:10 AM..
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      01-31-2020, 08:56 AM   #2
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That’s an increase of 9hp in mode 7. JB+ gives an increase of around 25-30hp on a dyno. Looks like the JB+ helps out out more power?

Did your butt dyno feel a noticeable difference when you first installed the box?
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      01-31-2020, 01:29 PM   #3
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Yea definitely felt different, but not 15%+ different. My wife has an X5 M50D that is pretty close in straight line acceleration (which is insane for such a large vehicle).I am noticeably quicker, but not a by a long way.

The main question, and I've emailed TDI, is why the boost didn't increase? Unlike the JB+, this box reads / maps from the boost sensor, RPM, and air flow so I am surprised it didn't do much. In fact, in Mode 7 the boost was lower(!!) stock in parts. It is possible that the car when into a sort of limp mode due to it being super hot... but I suspect that's unlikely.

Last edited by AustraliaG20; 01-31-2020 at 01:41 PM..
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      01-31-2020, 01:36 PM   #4
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Quote:
Originally Posted by AustraliaG20 View Post
Yea definitely felt different, but not 15%+ different. My wife has an X5 M50D that is pretty close in straight line acceleration (which is insane for such a large vehicle).I am noticeably quicker, but not a by a long way.

The main question, and I'll send an email to TDI is why the boost didn't actually increase? Unlike the JB+, this box reads / maps from the boost sensor, RPM, and air flow. I was really surprised that in Mode 7, the boost was lower(!!) stock in parts. It is possible that the car when into a sort of limp mode due to it being super hot... but I suspect that's unlikely.
I wonder why too. And I had no idea it was that hot there.

If you have an empty stretch of road there, would it be possible to do a quick 0-60 using brake boost/LC? A recording of the speedometer would be helpful
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      02-03-2020, 05:03 AM   #5
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Just bouncing emails back and forth with TDI. It's definitely not working as intended, and was supposed to increase boost which it isn't. So there is an issue somewhere. I'll update when I get more info.
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      02-03-2020, 09:23 AM   #6
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I had a Racechip on my A4 B9 before I got the 330i. There were a lot of people who said it doesn’t have any effect and that dyno runs will prove that it doesn’t work. But I never dynoed my car because my butt dyno was happy and I had before and after videos of the speedo enter where there was upto a 0.6s difference in the 0-60mph run and almost 1.7s difference in the 0-100mph run between stock and racechip. Still makes me wonder why these differences don’t translate on the dyno.
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      02-07-2020, 07:08 PM   #7
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I've shipped it back. I'll let you know when I've got a replacement.
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      02-07-2020, 10:14 PM   #8
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Quote:
Originally Posted by AustraliaG20 View Post
I've shipped it back. I'll let you know when I've got a replacement.
Will you be redoing a dyno run?
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      02-10-2020, 02:44 PM   #9
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I will, but it'll be a couple weeks away at this stage.
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      02-10-2020, 03:48 PM   #10
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Quote:
Originally Posted by AustraliaG20 View Post
I will, but it'll be a couple weeks away at this stage.
That’s nice that you will be doing another dyno run. I hope this one turns out to be as expected. Is your car stock for now?
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      02-13-2020, 09:49 PM   #11
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Yea, completely stock now.
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      02-23-2020, 06:01 PM   #12
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Quote:
Originally Posted by VipinLJ View Post
That's an increase of 9hp in mode 7. JB+ gives an increase of around 25-30hp on a dyno. Looks like the JB+ helps out out more power?

Did your butt dyno feel a noticeable difference when you first installed the box?
Her in Brasil there are people claiming gains of up to
350 hp on the engine for the 330i
And torque of 50 NM on the wheel
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      05-08-2020, 07:04 PM   #13
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Quote:
Originally Posted by AustraliaG20 View Post
Yea, completely stock now.
I've been looking at a TDI box, just curious if there was any update on this ?
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      05-08-2020, 09:45 PM   #14
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I haven't managed to put it back on the dyno. Might get it done in the next week or so. It does seem a little more powerful, but not distinctly so. Hard to tell...
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      11-03-2020, 01:17 PM   #15
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I'm a little confused about tuning. What's the best type of tune for most increase in horsepower and noise.
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      12-20-2020, 04:20 PM   #16
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Quote:
Originally Posted by AustraliaG20 View Post
I haven't managed to put it back on the dyno. Might get it done in the next week or so. It does seem a little more powerful, but not distinctly so. Hard to tell...
Did you end up testing it again? I'm curious about the results.
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