DAF LF55 FR103 4.5L 140hp (103kW) 550Nm — Stage 1 file (+18 hp)
hp
Stage 1 file for DAF LF55 FR103 4.5L 140hp (103kW) 550Nm
Target +0 hp. Custom development for your engine.
Chip tuning for DAF LF55 FR103 4.5L 140hp (103kW) 550Nm ECU
DAF LF55 (I) FR103 4.5L 140hp (103kW) 550Nm — commercial diesel engine of the commercial segment of the PACCAR (с 1996) group (Нидерланды, 1928). Stage 1 chip tuning raises power from 140 to 158 hp (+18 hp, +13%) and torque from 550 to 630 Nm (+80 Nm).
DAF has been part of the American PACCAR group since 1996. DAF is a Dutch truck manufacturer, founded in 1928. The XF, CF and LF are DAF's main series. The factory calibration is conservative, leaving headroom for Stage 1 while preserving engine life. Mid-range diesels are a mainstream chip tuning subject in the commercial segment. Mid-generation truck models use standard OBD read/write.
The truck chip tuning community is an industry of its own, focused on long-haul routes. Stage 1 on truck diesels focuses on torque for loaded running. The professional logistics segment tunes for fuel consumption and pulling characteristics. Mid-range MAN trucks are a mainstream chip tuning subject in logistics.
Frequently asked questions
How much does the power of the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm increase after Stage 1?
Stage 1 chip tuning on the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm boosts engine output by 18 hp: from 140 to 158 hp. Torque rises from 550 to 630 Nm (+80 Nm).
What changes in the DAF LF55 ECU after Stage 1?
Stage 1 on the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +18 hp with no hardware changes.
Is a Stage 1 remap safe for the FR103 4.5L 140hp (103kW) 550Nm?
Stage 1 on the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm is developed while keeping the factory AFR, knock control and temperature limits. Engine life is preserved provided regular maintenance is carried out.
How does Stage 2 differ from Stage 1 on the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm?
Stage 2 for the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.
Does Stage 1 void the warranty on the DAF LF55?
Stage 1 on the DAF LF55 voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.
How quickly is chip tuning of the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm done?
The full remap cycle for the DAF LF55 — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.
Can you return to stock after Stage 1 on the DAF LF55?
The original DAF LF55 ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.
How much does Stage 1 cost for the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm?
The cost of Stage 1 for the DAF LF55 FR103 4.5L 140hp (103kW) 550Nm is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.