1986 VW Golf 16V
turbo Digifant I
16VT’s involvement: Supplied
a fully functional plug and play
Megasquirt
ECU + injectors for a customer in Germany; calibrated fuel,
ignition and
idle
on a local vehicle with similar hardware before shipping out the
loom+ECU.
Chassis: stock;
Forced induction: GT28RS.
Engine: 1800cc, KR engine
code, 16 valve, Audi 20V intake manifold.
Injection: Port
injection, 440cc/min Lucas highZ
injectors, Bosch coolant
and Bosch intake temp sensors.
Description: The objective was to replace the Digifant 1 system with the megasquirt. A suitable adapter was made to link the megasquirt to the digifant 1 loom. All stock sensors were used. A V3.0 Megasquirt PCB was used, with optional 4 bar map sensor and TIP122 for idle control..
Pin configuration:
MS
GROUNDS (8,9,10,11) go to
T25/13, T25/19 (black)
MS SENSOR GROUND (19) goes to T25/6 (black)
MS MAT (20) goes to T25/9 (white)
MS CLT (21) goes to T25/10 (yellow)
MS TPS SIGNAL (22) goes to T25/15 (blue)
MS O2 SENSOR SIGNAL (23) goes
to T25/2 (blue)
MS PIN 24 goes to T25/8 (hall
sensor 12V supply via jumper from T25/14) (red)
MS PIN 6 goes
to T25/18 (hall sensor signal
to 4N25 via XG1) (green)
MS TPS Vref
(26) goes to T25/11 (white)
MS FIDLE (30) goes to T25/22 (yellow)
MS INJ1 (32,33) goes to
T25/12 (green)
MS INJ2 (34,35) wired
externally (none)
MS IGN (36) goes to T25/25 (yellow)
MS FUEL PUMP (37) goes to T25/3 (green)
Options included:
Switchable maps on pin 5 (brown)
Pin 6 used for hall sensor signal (green)
Pin 25 is output 1, JS2 (green)
Pin 27 is nitrous, JS1 (pink)
Pin 29 is output 2, JS3 (white)
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