BMW 3 series E21 Turbo
2007.07.16
Car is started and barely tuned with firmware 1.1.18
Boost pressure is 1.2 bars.
The whole ignition table is strange, car NEEDS very large values, e.g. 40 degrees at boost.. I suspect that timing is incorrect.
(However I strobed it at idle and seemed correct to the mark)
Questions:
- With 6+2, 2+6, 4+4 IGN hw config ordered, which outputs are power-outputs?
- IAC is one-coil PWM solenoid with preset spring but it seems that it CLOSES when IAC values raised. How to control this?
- What can cause ignition advance over the table? I see 19 degrees when 14 is in the ign table (around idle).
OLD STUFF
Project goals
- 300+ peak BHP
- reasonable daily driver
General hardware
- M10B20 (2000ccm) 4cyl 8v engine
- T3/T4 hybrid turbo, external wastegate
- big FMIC
ECU-related hardware
- custom 60-2 trigger wheel setup with VR sensor, missing tooth is 120 degrees BTDC (copied from M40 engine, the source of the wheel)
- 72lbs low imp injectors
- later motronic IAC valve instead of old mechanical one
- big throttle body with TPS potmeter. (from M50 2.5 24V)
- webshop IAT install with epoxy
- Ignition coil block from later M44 engines. see MembersPage/GergelyLezsak/MFortyFourIgnition
- EGT sensor bung in cyl4 exhaust runner
- WBO2 sensor bung in exhaust after turbo
Buylist
4 x Power-resistor (6R8,50W) = 5888HUF
1 x EconoSeal36-Wire side () = 4195HUF
2 x Sealed sensor connector () = 2984HUF
pincount 2
Sex pair
1 x K-thermocouple connector (K) = 3190HUF
mounting-style flying loom
Sex pair
1 x Wideband connector () = 2186HUF
With wire without wires
1 x Wideband O2 sensor (LSU4) = 19519HUF
1 x EGT sensor (K-type) (2x90mm) = 16249HUF
Size 6mm
1 x LCD4x20 (LCD4x20) = 5949HUF
Color green
1 x Econoseal18-Wire side () = 2487HUF
1 x Assembled v3.3 controller (v3.3) = 142353HUF
ignition driver 6+2
secondary_trigger HALL
primary_trigger VR
PowerFlyback no
mounting-style no-screws
MAP connection 400kPa onboard (6/4mm pneumatic)
Knock and EGT yes
LCD and PS2 yes
1-wire interface no