Chinese buses are Cummins buses. Whatever the badge - Yutong, King Long, Higer, Golden Dragon, Zhongtong - the engine under the floor is almost always a Cummins from the Dongfeng Cummins joint venture: ISBe6.7, ISLe 8.9 L, L9, or an ISG11 / ISG12 on the big coaches. That means a Cummins CM2150E, CM2350A, CM850 or CM2880 control unit, with a Delphi ETC3 on some Yuchai-engined Yutong city buses. For an operator the three problems are always the same: the SCR system stops the bus in service, the DPF regenerates constantly in city traffic, and fuel is the biggest line in the budget.
Key facts
- Published versions: King Long 21, Yutong 12, Higer 5, plus Golden Dragon, Zhongtong, Bonluck, Wuzhoulong and Weichai Eurise.
- Brands in the file service: Yutong, King Long, Higer, Golden dragon, Zhongtong. The ISG-engined coaches are listed under Higer, Yutong and Foton alike - one file covers all three.
- City buses (ISBe6.7, 6.7 L, 4.5 L): Cummins CM2150 / CM2150C / CM2150E, CM2220 / CM2220A.
- Coaches (ISLe 8.9 L, L9, 8.3-10.8 L): Cummins CM2350 / CM2350A, CM850, CM570, CM2250.
- Big coaches with ISG11 / ISG12: Cummins CM2880.
- Yuchai-engined Yutong (10.8 L): Delphi ETC3 / DCM7.24; newer Yutong also Bosch MD1CE108.
- Older chassis: Bosch EDC7UC31 (8.4-9.2 L), EDC16C39 (2.5 TDI minibuses).
Which ECU is in your bus
| Brand and models | Engines | ECU | Versions |
|---|---|---|---|
| King Long XMQ6129, XMQ6900, XMQ6800, XMQ6996, XMQ6130Y, KLQ61, C10, 1644, FT129, DS025 | Cummins ISBe6.7 (182-280 hp), ISLe 8.9 L (320-390 hp), 4.5 L, 8.0 L, 8.4-9.2 L | Cummins CM2150 / CM2150E, CM2350A, CM2350, CM850, CM2250, Bosch EDC7UC31 | 21 |
| Yutong ZK6129, ZK6129HI, ZK6119, ZK6938, ZK6858, ZK6108, ZK6116HT61, ZK6121HQ, HQ6131, C12, EC9, Puma, 795 | Cummins ISB6.7 (182-320 hp), L9 8.9 L 340 hp, 6.7 L 274-374 hp, 4.5 L 204 hp, 8.3 L 354 hp, Yuchai 10.8 L 322-381 hp, 6.8-7.7 L | Cummins CM2350 / CM2350A, CM2150 / CM2150C / CM2150E, CM850, CM570, Delphi ETC3 / DCM7.24, Bosch MD1CE108 | 12 |
| Higer KLQ6119, V91, H7, H7170, H6C KLQ6600, FL, QSF | Cummins ISBe6.7 239 hp, ISLe+300 9.0 L 296 hp, ISF3.8 158 hp, 2.5 TDI 134 hp | Cummins CM2220, CM2150 / CM2150E, Bosch EDC16C39 | 5 |
| Golden Dragon XML6122C, XML6857, city bus; Zhongtong; Bonluck JXK6140 / 6150; Wuzhoulong FDG6101; Weichai Eurise | Cummins ISF3.8 154 hp, ISBe6.7 223 hp, 8.9 L 320-390 hp, 10.8 L, 5.9 TD, 3.9 Isbe 177 hp, 2.8 d | Cummins CM2150E / CM2150C, CM2220A, CM850, CM570, CM2350A, Bosch MD1CC878, EDC7C1/C2 | ~10 |
| Coaches with ISG (listed under Higer, Yutong and Foton) | ISG11 10.5 L, ISG12 11.8 L | Cummins CM2880 | 2 priced entries |
What we can do, and what it costs
| Solution | CM2150 / CM2150E | CM2220 / CM2220A | CM2350 / CM2350A | CM850 | CM2880 (ISG) | Delphi ETC3 |
|---|---|---|---|---|---|---|
| DPF / DOC off | 105 EUR | 105 EUR | 140 EUR | 120 EUR | 140 EUR | 150 EUR |
| EGR off | 85 EUR | 85 EUR | 95 EUR | 95 EUR | 105 EUR | 105 EUR |
| AdBlue / SCR off (or reduction) | 170 EUR | 180 EUR | 290 EUR | 180 EUR | 240 EUR | 220 EUR |
| Stage 1 or ECO file | 140 EUR | 140 EUR | 140 EUR | 140 EUR | 140 EUR | 150 EUR |
| Stage 1+ / Stage 2 | 210 EUR | 210 EUR | 210 EUR | 210 EUR | - | - |
| Vmax / speed limiter | on request | on request | 70 EUR | on request | on request | on request |
| Throttle / swirl | 95-105 EUR | 105 EUR | 105 EUR | 105 EUR | 105 EUR | 85 EUR |
| Selective DTC off | 60 EUR | 50-60 EUR | 60 EUR | 50 EUR | 60 EUR | 50 EUR |
| Checksum / back to original | 40-50 / 80 EUR | 40-50 / 80 EUR | 80 / 80 EUR | 50 / 80 EUR | 80 / 80 EUR | 50 / 30 EUR |
The typical fleet order. AdBlue off or AdBlue reduction + DPF off + an ECO file, with a Vmax change where the route demands it. AdBlue reduction costs the same as AdBlue off and keeps the system working - the right choice where the bus has to stay compliant on paper but the consumption is the problem.
Reading and ordering
- Find the engine plate. ISBe6.7 and 6.7 L mean CM2150 or CM2220 family; ISLe 8.9 L, L9 and QSL mean CM2350 / CM2350A or CM850; ISG11 / ISG12 mean CM2880; a Yuchai 10.8 L on a Yutong usually means Delphi ETC3.
- Read it. Cummins units are commonly handled with Calterm-type tooling and produce .xcal files - send them exactly as the tool wrote them. Autotuner, KESS3 and PCMtuner also cover many of these; the Bosch and Delphi units want bench or boot.
- Order at fs.auto-remap.com under Yutong, King Long, Higer, Golden dragon or Zhongtong, then the model, engine and ECU type.
- For a fleet, send one bus first. Once the file is proven on that chassis, the rest of the identical buses are quick - tell us it is a fleet job and we will keep the versions together.
- Clear every AdBlue message and inducement countdown from the dashboard before writing an AdBlue-off file.
FAQ
Our buses are all the same model - do we need a file per bus?
You need a file per software version, not per bus. If the software numbers are identical, the same file applies to the whole batch. Different production years usually mean different versions, so read one of each.
Can you do AdBlue reduction instead of a full delete on a city bus?
Yes, at the same price. The SCR system keeps working and the dosing is reduced - the usual choice for operators that must stay compliant.
Why do Higer, Yutong and Foton show the same "Buses/coaches (ISG)" line?
Because the ISG11 and ISG12 coach chassis from those three brands share the same Cummins CM2880 unit and the same file. Pick your own brand and that line.
Will an ECO file cost us power on hills?
No. An ECO map keeps the factory power and torque curve and works on consumption at cruising load. If you want more power as well, that is Stage 1 - same price position, just say which one you want.
Is the Delphi ETC3 on Yutong the same as other Delphi units?
It is its own entry in our price list (DPF 150 EUR, EGR 105 EUR, AdBlue 220 EUR, Stage 1 or ECO 150 EUR) and it is only used on the Yuchai-engined 10.8 L city buses. Newer Yutong chassis moved to Bosch MD1CE108.
Ready to order? Go to fs.auto-remap.com, pick your bus brand and the Cummins or Delphi ECU.
File service for professional tuners and workshops.
Prices are indicative and taken from our current price list. Emission-related modifications are supplied for off-road, motorsport, export and research use only, in territories where such modification is permitted. It is the customer's responsibility to comply with local legislation.