Delphi CRD3.1R ECU chip tuning: Delphi control unit. In the CHIPOK database this unit is found only on Mercedes (14 modifications). Supported: Stage 1 Project-Id-Version: ECUTools Online 1.0 Report-Msgid-Bugs-To: POT-Creation-Date: 2026-07-01 14:20+0300 PO-Revision-Date: 2025-01-02 12:00+0000 Last-Translator: Language: en Language-Team: English Plural-Forms: nplurals=2; plural=(n != 1); MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Generated-By: Babel 2.18.0, removal of DPF · the EGR valve · SCR/AdBlue · the lambda sensors, swirl-flap removal, VMAX Off and DTC clearing, Reset to Stock, Oil Pressure Optimizations. Programmers: KESS3, KTAG, FoxFlash, BitBox, BDM100.
The Delphi CRD3.1R ECU is fitted to 14 engines in the CHIPOK database across 1 brand. Top: Mercedes (14).
On the Delphi CRD3.1R the following are available: STAGE 1, LAMBDA OFF, EXT FLAPS OFF, ECO TUNING, ADBLUE OFF, DPF OFF, VMAX OFF, DTC OFF, OIL PRESSURE OPTIMIZATIONS, EGR OFF. All options combine in the calculator with the package Max Price cap.
To flash the Delphi CRD3.1R the following is used: KESS3, Autotuner, MPPS, KTAG, CMD Flash, Trasdata, MagicMotorSport. CHIPOK accepts .bin/.hex/.ori from any of the listed programmers.
Stage 1 on the diesel Delphi CRD3.1R reprograms rail pressure target, SOI/EOI timing, boost target, smoke limiter and torque limiter. The torque gain is noticeable; the HP gain depends on the specific engine.
A Delphi CRD3.1R file is accepted in .bin/.hex/.ori format (full read) from any programmer: KESS3, Autotuner, FoxFlash, KT200. Checksums are recalculated by hand in WinOLS5.
Flashing the Delphi CRD3.1R takes 25-30 minutes in OBD mode or ~60 minutes on Bench. Once the file is received, CHIPOK processes it in 5-30 minutes.
The cost of flashing the Delphi CRD3.1R is calculated in the price calculator: you select options (Stage 1/2, DPF off, EGR off, AdBlue off, DTC off, etc.) and the final price is capped by the package Max Price. Paid with credits (1 cr = 1 €), no subscriptions.