Here is a mini guide on how to use WinOLS disable EGR for Opel Astra H1.9 CDTI 16V.And I write another guide on : WinOLS Diable/Close EGR for SAAB/OPEL EDC16C9
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Appy for:
ALFA ROMEO / FIAT / LANCIA / OPEL / SAAB 1.6 / 1.9 / 2.4
Car: OPEL ASTRA H 1.9 CDTI 16V
HW: 0281014024
SW: 389373
Solution type: Close EGR valve
1.Find EGR map (Desired air quantity) – in this file 1C2F78
2.Turn on 16bit, HiLo, decimal and 2D mode
3.Search after EGR map 4 hysteresis (25×1) like on the pictures below
4.Fill these maps with 0 like on the pictures below
5.Correct checksum and save binary file
Check here: How to Make Checksums for ECU Files with WinOLS
6.Now,you will find the EGR should be closed.