1997 SEAT Cordoba SX turbo

 

16VT’s involvement: Complete, since it’s Ahmad’s (ex) personal car.

Chassis: FK Koenigsport coilovers, F&R anti-roll bars, Porsche Boxster front brakes, Work 17x8” et30 wheels, 15mm H&R rear spacers;

Forced induction: Holset HX40, Tial external wastegate with 10psi spring, 76mm v-banded downpipe, short runner intake manifold, VR6 OBD2 throttle body, 50/70mm intercooler piping, Forge RS blow off valve, 1.7+ bar of boost, ECU controlled water injection (aquamist HSV), 780x330x76 mm core FMIC;

Engine: 2008cc, ABF engine code (same as VW), 16 valve, ARP head studs, forged connecting rods with ARP rod bolts, JE forged 8.5CR 83mm pistons, titanium valvespring retainers, Autotech stiff valvesprings, lightweight valve lifters, Mocaloil cooler, APEXi AVC-R boost controller, P&P head, WAVETRAC torsen front differential, 3.157 final drive,  SPEC Stage 3+ clutch;

Injection: Port injection, 630cc/min highZ Siemens Mototron injectors at 4 bar FPR, Digifant 3.2 ECU, 60-2 trigger wheel, hall effect crank sensor, PWM control of throttle body for idle, Bosch coolant and GM intake temp sensors, VW wastespark coilpack with internal ignitor eliminated, Magnecor KV85 ignition leads, BKR8EIX plugs, Bosch 910 external fuel pump;

Description: The objective of this install was to use the original wiring loom with the Megasquirt. To do this, an old 68 pin ECU was cannibalised and turned into an adapter. The Megasquirt was installed inside the car, with wires running to the 'ECU' box. All the original sensors and actuators were used, with the exception of a secondary external wiring loom to connect to the additional coil, and the water injection (HSV) valve.

Mods to the PCB included:

• Adding TIP122 for idle control, with 1N4001 for flyback
• Two 1N4001's for the launch control circuit
• Two 1N4001's for the switchable tables circuit
• ZTX450 for 'output 2', with 1N4001 for flyback purposes (using JS3)
• PN2222A to drive the stock tachometer (using pin 10, JS7)
• Additional VB921 to drive wastespark coil
• IRLZ44 to drive Aquamist HSV

Pin configuration with the v3 PCB Megasquirt:

• MS GROUNDS (8,9,10,11) go to T68/1 (black)
• MS SENSOR GROUNDS (19) go to T68/33 (black)
• MS MAT (20) goes to T68/36 (red/black)
• MS CLT (21) goes to T68/14 (yellow)
• MS TPS SIGNAL (22) goes to T68/40 (blue)
• MS O2 SENSOR SIGNAL (23) goes to T68/20 (blue)
• MS PIN 24 was fed a constant +12V from T68/38, and the hall sensor power (T68/68 ) was also fed +12V (red)
• MS XG1 (inside the MS box) was fed the crank sensor signal from T68/67 (using pin 6 on the DB37) (green)
• MS TPS Vref (26) goes to T68/41 (white)
• MS coil control (36 in this case) goes to T68/8 (brown)
• MS +12V (28 ) goes to T68/38 (red)
• MS FIDLE (30) goes to T68/27 (lime yellow)
• MS INJ1 (32,33) goes to T68/24 and T68/25 (yellow)
• MS INJ2 (34,35) goes to T68/26 and T68/2 (green)
• MS FUEL PUMP (37) goes to T68/6 (green)

Optional connections included:

• Launch control on pin 3 (SPR1) (yellow)
• Reserved for water pump, pin 4 (SPR2) (white)
• General purpose 'Output 2', pin 5 (SPR3) (green)
• Aquamist HSV, pin 25 (IAC1A) via pin T68/31 evap (blue)
• Additional high current coil driver (coil B), pin 27 (IAC1B) (lime yellow)
• Tacho out, (pin 29, IAC2A) was fed to T68/22 (white)
• Switchable tables, pin 31 (IAC2B) (blue)
• T68/39 is aircon signal for solenoid (blue)
• T68/35 is speedometer signal (VSS) for AVC-R (pink)
• T68/22 is tachometer (white)

Crank signal was decoded using MSnS-E HR 10d code, 60-2 wheel, with 14th (15th if 0 and 1 are the missing teeth) tooth at TDC. Trigger angle 60*. Trigger position A was 5, Trig pos B 35, Trig return pos A 14, Trig return pos B 44.

  

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Click here for previous setup (2007)

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