BMW 3 series E21 Turbo
2007.07.09
Car is started yesterday with firmware 1.1.18, no tuning yet.
Questions:
- With 6+2 IGN hw config ordered, which outputs are power-outputs?
- In 1.1.18 firmware does iac_speed variable changed? What unit can be seen in megatune? Lower value seems to make faster freq.
- Stock M44(?) IAC valve don't seem to follow positions at all, any experience with it?
- 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