History of VehicleFitment/BMW/SFiftyFour
Older Newer
2017-02-06 13:32:03 . . . . catv-80-98-142-196.catv.broadband.hu [piggyback note]
2017-02-06 09:01:18 . . . . catv-80-98-142-196.catv.broadband.hu [minor: formatting and notes]
2016-05-17 10:07:28 . . . . MembersPage/JasonRussell [Placeholder]


Changes by last author:

Changed:
BMW S54, as in the e46 M3, M coupe, and M roadster
BMW S54 (or [S54B32]), as in the e46 M3, M coupe, and M roadster
Changed:
3.2 liter Dual VANOS, Individual Throttle Body, 333(US)/338(EU)bhp factory spec.
Probably the most advanced BMW I6 engine, BMW was criticized for ending manufacturing (in favor of the shorter V8-s). Fully supported by VEMS (order with proper options, see below).

3.2 liter Dual VANOS, Individual Throttle Body, 333(US)/338(EU)bhp factory spec.

Changed:
BMW S54 dual-VANOS engine: VR, HALL, HALL + 4 * PFET high-side switches for the 4 hydraulic cam-actuator solenoids

There are 3 engine speed sensors. One on the crank (VR) and one on each camshaft (Hall). The ECUs need to be ordered with 3 trigger inputs. The ECUs also need to be ordered with 4 PFET high side drivers for the camshaft solenoids since they require switched 12V, not switched GND like traditionally run solenoids.

BMW S54 dual-VANOS engine: VR, HALL, HALL + 4 * PFET high-side switches for the 4 hydraulic cam-actuator solenoids

* There are 3 engine speed sensors. One on the crank (VR) and one on each camshaft (HALL), so order ECU with 3 trigger inputs

* order ECU with 4 PFET high side drivers for the camshaft solenoids since they require switched 12V, not switched GND like traditionally run solenoids.

* ETC (DBW drive by wire Electronic Throttle Control) supported, all the usual things apply:

** read VT help

** ETC is for careful, experienced installers. Understand the concept and details, create your page from MembersPage , configure with safety relay, check the margins, ...

----

Piggyback install

One might choose to make install simpler, taking over fuel/spark/air/controls completely, but keep the factory ECU

* to satisfy dash and air conditioner (CAN-bus)

The factory ECU shares the following inputs with VEMS ECU:

* primtrig crankshaft VR sensor

* GND (of course)

* +12V power

* CLT

** order "VEMS ECU without CLT pullup" (2k7 pullup to +5V can be easily installed later if the factory ECU is removed)

* MAT ? (VEMS needs it, perhaps the factory ECU does not need it ?

** If factory ECU needs MAT: order "VEMS ECU without MAT pullup" (2k7 pullup to +5V can be easily installed any time)