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EcuPrime blog cover: Volvo Denso 275700 / 112500 — Stage 1 and E85 flex-fuel
Technical articleECU family
1 min read

Volvo Denso families: 396 solutions and E85 flex-fuel on construction machinery

Stage 1 and E85 flex-fuel on the Denso 275700 and 112500 series. A rarely seen topic in construction machinery, verified with real donors.

Related product: PrimeChecksum

The Denso control units Volvo uses on its construction machinery make up two of the busiest rows in the library.

Library status

VOLVO DENSO 275700-1201 / 3410 / 3411 / 3412 198 solutions
VOLVO DENSO 112500-1XXX 198 solutions
VOLVO PENTA INDUSTRIAL BOSCH EDC7C1-C2 11 solutions

The two Denso rows hold 396 verified solutions in total; with the Volvo Penta EDC7 row the figure rises to 407. Two operations stand out on these rows: Stage 1 and E85 flex-fuel.

Why E85 is a separate topic

An E85 conversion affects injection time, cold start and lambda targets together with the fuel maps. It is not done with a single region change. Finding this topic with a verified solution in the construction machinery segment is rare; the library records were learned from real donor files.

About the Denso platform

Denso units use a different memory layout from Bosch and Delphi. Within the same series the calibration layout can change when the part number changes; so although the four sub-numbers of the 275700 series (1201, 3410, 3411, 3412) are grouped on one row, matching is done by file identity, not by series name.

Delivery gate

As with every operation, the rule is the same: if not all segments verify, the file is not delivered and no credit is used. The checksum is corrected in the same flow by the built-in PrimeChecksum.

Emissions-related operations are offered only for use permitted by local regulations (e.g. off-road / competition / export); responsibility lies with the user.

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