74kW TDP-PD, 82,000 km: Tuning and durability - is it possible?

Hello everyone,

Overall, I'm quite satisfied with my car (Fabia Combi 11/01, 1307kg) which has a 74kW engine (Euro3, 82,000 km, new timing belt, diesel filter, air filter, oil filter, and new oil) and offers decent performance. The only problem is that it only reaches the stated top speed (187 km/h) with a lot of effort, and that's only according to the speedometer. The speedometer indicates 110 km/h, but the actual speed is only 103 km/h.

The turbo kicks in around 1500 RPM, and from approximately 1700 RPM, the boost increases until around 3000 RPM, after which it remains constant above 4000 RPM. Fuel consumption is 60-100 in the fourth gear. Average speed in the middle gear was just under 8 seconds, and in 5th gear (80-120 km/h) it was around 11 seconds (average, timed manually).

"It accelerates relatively quickly up to around 170/180 km/h, but at 180 km/h (approximately 3550 RPM), a noticeable drop in power is felt. Reaching 3750 RPM (190 km/h) requires a lot of effort. I've tested different road surfaces (due to factors like road conditions and inclines)." Many TDI-PD owners report that the engine revs up to the limiter – well above 4000 RPM and a speedometer reading of 210 or more.

Today I took my car to the Skoda dealer to have it checked with a diagnostic tool. All the values (at idle) were within the normal range. The mass airflow sensor (MAF) reading was between 297 and 305. The test drive with the new mass airflow sensor was a disaster - either it was the wrong part (the number matched, but it had an additional small round grid in the intake), or it was simply defective (the turbocharger engaged and disengaged erratically, and when it did, it was late).

My current driving distances are up to 1000 km per week (maximum, often 800-900 km). Since I drive a lot on country roads and prefer to use the 4th and 5th gears, I would appreciate a bit more flexibility (in terms of power delivery). I have contacted several tuners who offer performance upgrades with power outputs ranging from 120-131 horsepower and torque levels of 280-310 Nm. (***, Hohenester, Nothelle, Wimmer-RST, Oettinger).

Since my car is no longer covered by the original warranty, the extra cost for the tuner to extend the warranty is no longer beneficial to me.

What is important to me is the durability of the engine and the powertrain, which is why I would like to limit the torque to a maximum of 300 Nm.

What do you think about my plan (please consider the mileage) and the issue with the maximum speed? Are there any of the mentioned tuners that you would recommend or any that you should definitely avoid? Okay, hier ist die Übersetzung:

"Or maybe an alternative?"

1. Fixing engine problems.
2. Fixing engine problems.
3. Fixing engine problems.

Otherwise, it doesn't really matter at what mileage you choose to get a tune-up.

If the clutch is already worn to the point where it's about to slip, will the increased engine torque after a tuning modification finally cause it to fail completely?

Otherwise:
Okay, I understand. Please provide the German text you want me to translate into English. I will only provide the translation.
Okay, I understand. Please provide the German text you want me to translate into English. I will only provide the translation.

Hey everyone, when you register for a new account, there's a specific screen that clearly instructs you to first use the search function and error database.
It's not in there just for fun.

Regarding your issue during the test drive: the mass airflow sensor is still a likely culprit. The VW part number is definitely the correct one. The competence of the workshop is questionable due to the intermittent issues, especially considering the lack of further investigation or troubleshooting.

Thank you for the feedback.

The 82,000 km is a high mileage, the clutch feels fine and disengages as it should.

It doesn't jerk or produce excessive exhaust smoke. Power and torque are available throughout the entire RPM range (from approximately 1700 RPM to over 4000 RPM), although they become less responsive in 5th gear (above 180 km/h, starting at 3600 RPM). In my opinion, the fuel consumption isn't particularly high - 4.9L/100km (calculated, while the onboard computer shows 5.1L) for mixed driving and with occasional full throttle (checked the maximum speed several times).

I will be conducting a dynamometer test today. The engine speed will be set between 2000 and 4000 RPM in the third gear. Okay.

"I might be able to do a test drive at the Skoda dealership and use VAG-COM to read the values, and then post them."

He also offered to take a closer look at the car (specifically the engine and turbo) – it should cost around 70 euros. Acceptable?

LMM at idle doesn't tell you much.

Definitely take a test drive and record the data.

It's also a good idea to check the boost pressure occasionally - keyword: VTG linkage.

Regarding the tuners, I would also consider ******** as a strong contender.

But before you do that, you must first enter the Seiren state.

My brother-in-law's 100 horsepower PD Golf 4 ran for over 200,000 kilometers without any problems.
Even my 1Z engine revs up to over 4000 RPM on the flat (indicated speed of 180-190).



m;

Here is a clear description of the problem I'm facing:

/viewtopic.php?t=1055&highlight=20004000

"Where exactly is the charging hose (photo online?) located, and how can I find a leak?"

Yesterday, at Skoda, the technician removed the plastic cover of the engine and examined all the visible hoses (small tubes) with his fingers, while using a flashlight to inspect the hoses located lower down.

Ah yes - the LMM looked like new on the inside - no signs of oil film or residue.

Rainer K. wrote:

... Otherwise: Okay, I understand. Please provide the German text you want me to translate into English. I will only provide the translation. Okay, I understand. Please provide the German text you want me to translate into English. I will only provide the translation. Hey everyone, when you register for a new account, there's a specific screen that clearly instructs you to first use the search function and error database. It's not in there just for fun. Regarding your issue during the test drive: the mass airflow sensor is still a likely culprit. The VW part number is definitely the correct one. The workshop's competence is questionable due to the intermittent issues, without further investigation or troubleshooting.

Can you read? Yes? Am I putting these links in just because I'm bored?

If you can't identify the turbocharger boost hoses, this is not the right forum for you, sorry.
For beginners: /viewtopic.php?t=3047