Mazda 2008 MazdaSpeed3 Wartungshandbuch PDF herunterladen (Seite 7)

We've created Safe Mode calibrations for Mazdaspeed3 vehicles that will limit the

achievable boost levels in order to keep the fueling demands within the fueling capacity of the

stock CDFP. For those with Stage2 hardware whom are not looking to push the power output of

your engine, these Safe Mode calibrations are your best choice in order to keep the fueling

demands within the capacity of the stock CDFP. Please note that we have not seen these types of

CDFP issues on the Mazdaspeed6 and as such have not created Safe Mode calibrations for this

vehicle.

Due to the nature of the inadequacies and inconsistencies of the factory CDFP we have

designed our OTS calibrations around the following observations; the Gen2 MAZDASPEED/MPS ECU

has logic implemented that will significantly increase fueling to the engine once the DI Fuel

Pressure drops below ~1600psi. This logic is intelligent by design, but also puts excessive

demands on the fueling system and further forces the DI Fuel Pressure to drop well below safe or

effective levels. This new logic combined with an inadequate factory Camshaft Driven Fuel Pump

(CDFP) results in the following.

• ALL Stage1 OTS Calibrations have been designed to run within the limits of the factory

CDFP to remain safe. Even at this power level, some vehicles may exceed the capacity of

the factory CDFP. We recommend that you run a "Safe Mode" calibration on the vehicle until

a quality aftermarket CDFP can be installed.

• ALL Stage2 OTS Calibrations REQUIRE a quality aftermarket CDFP to run properly. If you

have Stage2 hardware on your vehicle and have not installed a quality aftermarket CDFP, it

is highly recommended to run a "Safe Mode" calibration on the vehicle until a quality

aftermarket CDFP can be installed.

Below is an example of a datalog where one can see the stock CDFP failing during a Wide

Open Throttle (WOT) run in 3

gear. If this see this behavior with your vehicle, please switch to a

Safe Mode calibration or cease running the vehicle hard until the CDFP can be upgraded.

As you can see, the driver is holding the throttle down during a WOT 3

gear run and the

DIFP starts dropping off from its target of ~1650psi (at row 47) all the way down to ~700psi. This

is an indicator that your current CDFP is not capable of keeping up with fueling demands.

1 2 3 4 5 6 7 8 9 10 11 12 ... 27 28

Keine Kommentare

Mazda 2008 MazdaSpeed3 Wartungshandbuch Seite 7