Delco E41 — Delco control unit. On this unit the following is available: Stage 1 for power, removal from the logic of the EGR system / the catalytic converter/lambda / EVAP, disabling the swirl flaps, the Pops & Bangs effect, Speed Limit Off, DTC Off, rollback to the factory calibration and Cold Start Off. In the database — 3 modifications on Chevrolet and GMC. Read/write: Autotuner, MPPS, MagicMotorSport, KT200, FoxFlash.
The Delco E41 is used across 2 brands: Chevrolet (2), GMC (1). 3 engines in total in the database.
The Delco E41 ECU supports: CHECK STOCK OR NOT, STAGE 1, DTC OFF, VMAX OFF, EVAP OFF, COLD START OFF, FLAPS OFF, POP AND BANGS, CAT/LAMBDA OFF, EGR OFF. Checksums are recalculated on the engineer's side in WinOLS5.
The Delco E41 is supported by: KESS3, Autotuner, MPPS, KTAG, CMD Flash, Trasdata, MagicMotorSport. On production models OBD reading is usually enough; on locked variants — Bench (BDM/JTAG).
Stage 1 on the diesel Delco E41 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.
Delco E41 calibration requires a full read of the unit — bin/hex/ori. Programmers: Autotuner, KESS3 (OBD), KTAG (bench), Trasdata. Checksums — on the engineer's side.
Reading and writing over OBD take 25-30 minutes. Bench reading requires opening the unit — about 60 minutes. Remote processing of a Delco E41 file at CHIPOK — 5-30 minutes.
The price of Delco E41 calibration depends on the selected options: Stage 1/2, DPF/EGR/AdBlue off, DTC off. The Max Price cap limits the package total. Paid with CHIPOK credits (1 cr = 1 €).