Stage 1 case study on the 2.0 TDI 150 HP CRLB, Passat B8 (Bapro dyno, May 2026)

19 May 2026 12 min read

This case study documents a CRLB chiptuning project at AMC Motorsport Brasov: a Stage 1 calibrated individually on the 2.0 TDI 150 HP engine, code CRLB, measured on the Bapro BPA-2R HP dyno. The CRLB is one of the most popular diesel engines in the VAG group, found in the Volkswagen Passat B8, Golf 7, Skoda Octavia 3 and Superb 3, Audi A3 8V, Seat Leon 5F, VW Sharan and Tiguan, and its reputation comes from a very good combination of low fuel consumption, flexibility and reliability.

From the factory, this engine is calibrated conservatively, with significant limits on torque and on air mass management. It is exactly this reserve that makes a balanced Stage 1 possible, when the calibration is done correctly and checked through repeated measurements.

On 11 May 2026 we calibrated a Passat B8 2.0 TDI CRLB at AMC Motorsport. This article documents the whole process: initial check, stock datalog, writing our own file, measurement on the Bapro dyno and analysis of how the engine behaves under load. The final figures are taken directly from the Bapro dyno sheet and from the logs of the operating parameters.

The dyno figures, in short

	Measured stock	AMC Stage 1	Gain
Power	150.7 HP @ 3,244 rpm	184.6 HP @ 3,388 rpm	+33.9 HP
Torque	362.0 Nm @ 2,421 rpm	435.0 Nm @ 2,301 rpm	+73.0 Nm
Conditions	19°C / 941 mbar	19°C / 941 mbar	DIN 70020 correction

Technical ID card


Engine code	CRLB
Family	EA288 first-gen (2014-2018)
Displacement	1,968 cm³
Factory power	150 HP @ 3,500-4,000 rpm
Factory torque	340 Nm @ 1,750-3,000 rpm
ECU	Bosch EDC17C74
Injection pump	Bosch CP4.1
Turbo	Garrett VTG with electric actuator
Emissions control	DPF + LNT (NOx Trap), Euro 6

CRLB chiptuning: why it responds very well to Stage 1

The 2.0 TDI CRLB engine has a significant reserve in its OEM calibration. There are conservative limits on torque, on turbo management, on fuel control and on throttle response. When these areas are recalibrated coherently, the engine delivers significantly better without needing hardware modifications.

In practice, this means we get the extra performance not by forcing new components, but by releasing the potential that the factory hardware already has.

The goal of this project

For this Passat B8 2.0 TDI 150 HP CRLB, the goal of the Stage 1 calibration was a clear increase in performance, without pushing the engine into a needlessly aggressive zone.

In real use, what matters is flexibility, in-gear acceleration and the way the engine delivers torque under load. A correct Stage 1 should not turn the car into a brutal or smoky diesel, but should feel like a more powerful OEM version, more responsive and more pleasant in daily driving.

The AMC process on this specific case

1. Initial check

Before any software work, the engine is checked completely. We analyse turbo behaviour, rail pressure, air flow, DPF load and any active deviations or limits. If the engine shows mechanical problems or significant deviations, the process stops until the cause is fixed.

Diagnostics of the emissions systems is also part of our free emissions system assessment in Brasov, a clear starting point before any Stage 1 project.

2. Stock dyno measurement

Every project starts by measuring the real power. We do not compare the final result with a theoretical catalogue value, but with the real performance of the car before any work.

Two apparently identical engines can differ significantly depending on wear, maintenance, fuel or the condition of the particulate filter. The dyno provides the objective baseline for the whole process.

3. Analysis of the original calibration

After the ECU is read, the OEM calibration is analysed in detail. On the CRLB, the most important areas are the torque model, turbo management, fuel control and thermal protections. Professional software does not just mean raising boost pressure and the fuel quantity, but keeping a correct correlation between all the systems.

The AMC calibration strategy on the CRLB

On this platform, the main focus is controlled torque delivery. We do not aim for aggressive spikes at low revs and we do not build calibrations for unrealistic marketing figures.

The strategy aims for:

fast and controlled turbo spool
linear torque across the whole useful rev range
stable temperatures under prolonged load
correct correlation between air, fuel and timing

The result should be a faster and more flexible car, without needlessly aggressive behaviour, exactly the balance that lets the result be repeated over hundreds of thousands of kilometres.

Real data logging: practical analysis on this CRLB

The dyno shows the final result, but the logs confirm whether the engine runs correctly under load.

The 10 critical channels measured, with the maximum values recorded:

Channel	Maximum measured	@ RPM	Reading
MAP (absolute boost)	2,348 mbar	2,914	Matches the ECU target. Turbo mechanical margin: ~300-350 mbar
Rail pressure	1,988 bar	4,024	CP4.1 close to capacity, the reserve comes from air and IQ
EGT	695°C	3,660	Comfortable margin below the protection threshold
Engine torque (ECU)	387.7 Nm	2,464	Consistent with drivetrain loss down to 362 Nm at the wheel
Main IQ	61.4 mg	2,762	Smoke limiter active, below the visible smoke threshold
Lambda min	1.15	1,893	Conservatively rich running, no smoke
MAF	443 mg/stroke	3,737	Real air, correlated with MAP and IQ
DPF Δp	normal	-	Healthy filter, regeneration running normally
Coolant	74 → 80°C	progressive	Engine warm
Oil temp	65°C	constant	Enough for the baseline (real tests at 90°C+)

1. Boost pressure analysis

The measured boost pressure follows the pressure requested by the ECU very closely, maximum boost actual ~2,348 mbar against boost requested ~2,349 mbar. The minimal difference between the two values shows very good turbo control and a stable response under load. Aggressive software often shows oscillations and large deviations, but here the behaviour stays within the factory range.

2. Fuel pressure analysis

The injection system follows the requested values very closely, fuel rail actual ~1,988 bar against fuel rail requested ~1,987 bar. The almost perfect correlation shows a healthy injection system and no pressure drops under load, which is essential for combustion efficiency and torque stability.

3. Air flow and intake efficiency

In the logs we see air flow values above 440 mg/stroke under load. This confirms good turbo efficiency and no major intake restrictions. Stable air flow is essential for smoke control and for keeping combustion efficient.

4. Torque and delivery

The torque calculated by the ECU reaches about 387 Nm in the phase analysed, a sign that the engine still has reserve available for a balanced Stage 1 calibration. What matters is that this torque is delivered linearly, without sudden spikes or boost drops. For DSG gearboxes and stock clutches, this approach is much healthier than software built only for maximum figures on the graph.

5. Temperatures and stability

The logs analysed show no signs of abnormal thermal behaviour. Maximum EGT stays at 695°C, with a comfortable margin below the protection threshold. This is critical: a lot of aggressive software raises temperatures and turbo stress for no reason, visibly shortening component life. At AMC, stability under load and thermal control come first.

DPF, LNT and EGR after Stage 1: what stays untouched

Unlike the EA288 evo versions from after 2018, the CRLB uses a NOx Trap (LNT, Lean NOx Trap) to reduce NOx, not an SCR system with AdBlue. The LNT absorbs NOx in lean running and regenerates periodically through short enrichment phases programmed by the ECU (rich purge), with no urea and no AdBlue tank. The most frequent question we get in the workshop on Euro 6 engines:

But what happens to the DPF and the emissions system after tuning?

Short answer: they stay exactly as they were. Long answer, component by component:

DPF (diesel particulate filter). We do not touch the post-injection, the Δp threshold or the ash levels. The filter keeps cleaning itself passively when cruising and actively when the regeneration threshold is reached, just as on the OEM software.

LNT (NOx Trap). Untouched. The rich purge regeneration strategy stays intact, as in the original Bosch calibration. The LNT keeps absorbing NOx in lean running and regenerating under the conditions programmed at the factory, with no changes to frequency or duration.

NOx sensors pre/post LNT. Untouched, 100% functional and readable by diagnostics.

High-pressure EGR and low-pressure EGR. Untouched. Vital for staying within the Euro 6 standard.

The practical result: no worries at the ITP (periodic technical inspection), no "check engine" light on the dashboard, Euro 6 compliance maintained.

The result on the dyno: the real graph

We also did the second run on the Bapro BPA-2R HP dyno after writing the modified software. Same dyno, same DIN 70020 correction, same atmospheric conditions.

Bapro sweep test 11/05/2026, stock curve (dashed line) vs Stage 1 (solid line). Press REPLAY to run it again.

The measured result:

Stage 1 power: 184.6 HP @ 3,388 rpm (+33.9 HP / +22.5%)
Stage 1 torque: 435.0 Nm @ 2,301 rpm (+73.0 Nm / +20.2%)

The gain obtained is extremely close to the range we consider realistic and sustainable on the CRLB platform. What matters is that these values were obtained without aggressive or unstable behaviour.

Reading the graph: the AMC calibration philosophy

The resulting graph shows our calibration philosophy on the CRLB very clearly. Three aspects are worth reading carefully.

1. Strong but controlled torque

The maximum torque of 435 Nm is reached early, at around 2,301 rpm, 120 rpm lower than the stock peak. In real use, this completely changes the flexibility of the car. The difference shows in:

in-gear acceleration from 80-120 km/h
overtaking in 6th gear
response to mid-range acceleration
part load in town
out-of-town driving with a loaded car

Important: delivery stays progressive and predictable. There are no aggressive spikes to overload the turbo or the DSG gearbox.

2. The power curve is very healthy

Power rises linearly up to around 4,000 rpm. Stage 1 holds over 175 HP between 2,800 and 4,000 rpm, a useful window of 1,200 rpm. Stock only reaches 150 HP around the peak and drops quickly.

Unbalanced software often produces sudden power drops, high temperatures, premature limiting, boost instability and the feeling that the engine "dies" after the mid-range. In this case, the curve stays clean, linear, stable and thermally efficient.

3. Perfect correlation between the dyno and data logging

A very important aspect is that the values seen on the dyno match the analysis of the real logs very well: boost actual almost identical to boost requested, very stable rail pressure, healthy air flow, no major oscillations, controlled torque delivery. The dyno confirms what the logs already showed, the engine runs efficiently, stably and predictably under load.

What you feel behind the wheel after Stage 1 on the CRLB

The dyno figures tell half the story. What matters to the owner of a Passat or Octavia who drives to the office every day and to the mountains at the weekend:

In-gear acceleration from 80-120 km/h in 6th gear, without forcing an automatic kickdown. On the DN1 (national road 1) Brasov-Predeal, overtaking is done without stress.
Pulling away from a roundabout is more responsive, without "hunting" for the right gear: 400+ Nm of torque is available from 2,200 rpm.
Long trips with a trailer or a full boot. The margin is felt most clearly climbing a slope with a loaded car.
Steady cruising at 130 km/h: fuel consumption stays within the factory window or drops slightly (0.3-0.5 l/100km in economical driving, as reported by our customers with the CRLB).
Unchanged sound and behaviour. We do not modify the exhaust and we do not add sport maps. The same car, more responsive.

Real power and sustainable values on the CRLB

In recent years, the market has been flooded with exaggerated figures for this engine. In practice, a correctly calibrated 2.0 TDI CRLB has to be treated realistically.

From the experience gathered on hundreds of MQB diesel platforms, a healthy and balanced Stage 1 for the 2.0 TDI 150 HP CRLB usually takes the engine into the range of:

180-190 HP
410-430 Nm

The exact values depend on the condition of the engine, the gearbox, the ambient temperature, the fuel and the efficiency of the intake system. The case presented in this article (184.6 HP / 435 Nm) sits exactly in the centre of this range. In our view, this is the optimal balance between performance, temperatures and reliability.

How long it takes, how much it costs

A complete Stage 1 on the CRLB at AMC takes 90 minutes on average, with an appointment booked in advance. The typical price for Stage 1 with the before/after dyno run included is 1,599 RON, varying with the ECU reading method (OBD vs bench/BDM) and with extra options, for example a DSG remap on the DQ250, DQ381 or DQ500.

For the exact quote for your car, use the AMC configurator or ask us on WhatsApp.

Why not all Stage 1 software is the same

From the outside, most Stage 1 offers look similar. In practice, the differences are huge.

Poor software can mean excessive boost, smoke, high temperatures, aggressive torque at low revs, removed protections, limiters raised without logic and, most importantly, no checking, no logging and no real measurement on the dyno.

A professional Stage 1 has to be coherent, measurable, repeatable, stable and checked. The difference between the two types does not necessarily show in the first week, it shows after 50,000-100,000 km, when the turbo, the injectors and the gearbox confirm or disprove the quality of the file.

At AMC Motorsport, every project is treated individually and checked against real data. No generic files, no marketing figures, no "approximations".

Conclusion

The 2.0 TDI 150 HP CRLB engine is one of the best diesel platforms for a balanced Stage 1. When calibrated correctly, the engine can deliver 180-190 HP and 410-430 Nm with much fuller and more efficient behaviour in daily use.

The real difference, however, does not come from the figures alone. It comes from checking, measuring, software analysis, data logging and measurement on the dyno. It comes from respecting the thermal margin, the mechanical limits of the turbo and the injection pump, and the durability of the gearbox.

At AMC Motorsport, a Stage 1 does not just mean more power. It means a calibration built on real data, measured on the dyno and confirmed on the road.

Come and see what your engine can do

If you have a Passat, Octavia, Superb, A3, Leon, Sharan or Tiguan with the CRLB engine and you want to know exactly what it produces, not "approximately" but measured on the dyno, book a dyno session at AMC. See your figures before and after, on the same Bapro dyno, on the same day.

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The figures in this article come from the ECU datalog and the real Bapro sheet from 11 May 2026. We do not publish the registration number, VIN or any other personal data of the customer. The individual result on other CRLB engines may vary by ±5% depending on mechanical condition, fuel, outside temperature and other variables.