After using piggyback ECU's such as Morristech TSI and AEM Fic 6/8 and not satisfied, I decided to go standalone ECU.
Engine code: S50B32
Specs:
6 cylinder in line
Infinite variable camshaft angle on both intake and exhaust(VANOS)
displacement (cm3): 3201
JE pistons 8.5:1 compression ratio
Forged ARROW connecting Rods
Coil on plugs and full sequential
Stock cams
GT37/40 hybrid turbo
3 vr sensors
Crank 60-2
Exhaust 6+1
Intake 6
Engine management:
VEMS V3.6 Firmware 1.1.96
Dual Vanos Enabled
VEMSTUNE 1.2.4
I kept the OEM harness and sensors to have the installation clean and OEM like.
First difficulty is the ignition coils wiring: I did not understand the way the ignition outputs are sequenced. The table is traversed backwards. Why not using outputs A,B,C,D... and then write the right firing order like in TunerStudio for megasquirt?
The harness was ready and installed on june 13th 2012.
Sensors were tested OK.
Ignition also OK on the test mode: ignition out 0 drives cyl #1 coil... firing order 054321-->153624
First attempt to start: the ECU asked for Password which I had not. VEMS shop sent it to me then another problem was that ECU was in Safe Mode. Ignition and injection outputs were disabled.
Solution: just upload the config file again.
First start: unsuccesful. Big pop sound on the exhaust.
I checked the sparks and everything was OK. I tried to reduce cranking VE in case the engine was flooded. No succes.
June 15 I verified if the ignition sequence was right.
Method: unplug the first spark plug and just let it on the spark hole. Put a spare spark plug on the corresponding coil plug.
Start the car and check if spark occurs on the compression stroke.
Result: The spark did not occur on the compression stroke so I had to shift up the outputs (ignition outputs table)
The car started right after shifting the outputs 3 times.
Question:
Why is the firing order different?
now the firing order is 624153
TODO: testing the Vanos and camshaft movement.
Question:
Camshaft target table: what values put avance and what put retard?