Volvo 480 Club Europe

Here are some tips/info to getting the V3.00 MS1 running Megasquirt n Spark (msns). More stuff will be added later, wiring diagram etc.

Megasquirt was mounted in the metal LH2.2 case, with a wireing loom going to an empty EZK case.

Tacho output pin needs a 12v pullup resistor as in the left diagram here:
http://www.extraefi.co.uk/Drawings/tacho_Wiring.GIF

You need an MAT/IAT temperature sensor. This monitors the air inlet temperatures. I used a 2 litre throttle body, and installed an open element type in a spare vacuum tube hole. The sensor came from a 2litre Volvo 4xx I think. I used the throttle idle switch wires for the new sensor, as Megasquirt doesn't need an idle switch, just a TPS.

Both the coolant and inlet temperature sensors are therefore identical in resistances. You need to calibrate the Megasquirt using EasyTherm with these details:

0 degrees C = 5800 ohms
20 degrees C = 2500 ohms
95 degrees C = 160 ohms

On the Megasquirt R52 and R56 need to be fully anti clockwise, and then turn R56 twice clockwise. See http://www.extraefi.co.uk/vr_setup.htm

The VR Sensor has three wires. Pin 10 on the EZK is positive (the signal), Pin 11 is screen and 23 is negative. If you extend these signals, use screened cable.

Igntion setup: I used a VB921 with an extra 1k pullup resistor to 12v to drive the standard Ignition Amplifier module.
http://www.msextra.com/manuals/MS_Extra ... singlecoil
For this, run spark output Not Inverted.

You could drive the Ignition Coil directly from the VB921, as that was what it was designed to do. For this, set spark output Inverted.

I am not running any Idle Control, mine is removed altogether. Boost control has not been used yet, I am just running an MBC (manual boost controller/bleed valve etc).

Auxiallary Water Pump on most Turbo engines is controlled by the LH2.2 ECU. To keep this working a simple circuit may need to be made, or change the wiring to that from early Turbo engines. There appaears to be possibly three different wirings for the Aux water Pump:

See the wiring in this document for early style Aux Pump which is controlled by two temperature sensors
http://volvo480.northernscum.org.uk/fil ... chemes.pdf

Then this one which is controlled by the LH 2.2 ECU and coolant temperature sensor mounted on the engine block.
http://volvo480.northernscum.org.uk/files/91wiring.pdf

And lastly this one, which is like above type, but with additional mechnical switch for temperatures above 105 celcius!
http://volvo480.northernscum.org.uk/fil ... wiring.pdf

Interesting stuff.

So how does it run?

pol

this is wot im wanting to see all the more info the better

Nice work!

So you are running with a 60-1 flywheel (or bosch style)?

60-2. I had real problems with the ignition advancing, even when I set it to be static and fixed at -10 degree. I had the spark inverted!!

At the moment, the fuel table is quite good as I'm using a wideband sensor and datalogging everything. Ignition timing is next to be sorted, but to get the best ignition timing it needs a rolling road. However, I'm disabling the boost to run like a N/A and will do some WOT pulls and keep increasing the timing until I register/hear knock and pull it back at that load site a couple of degrees. From there on you can use some rough rules of 1degree or retard for every 0.5psi to 1psi for the high boost areas.

fance making me a loom.lol

good to see somebody moving
my MS is still sitting on the shelf...
i'me curious about your tables/setup

Pinouts of the 1.7 turbo Throttle body TPS:

1 5v
2 Shield/GND
3 Signal
4 Idle Switch
5 No connection
6 Idle switch GND


Pinout of the 2.0 litre (and I guess 1.7 NA) throttle body TPS:

1 GND
2 5v
3 Signal

would there be any advantage running a map sensor setup ( asumeung megasquirt is available with it, not doen my research into this ecu) rather than tps??

all megasquirt variants include both MAP sensor and TPS

Interesting project, I'm doing the same with my B18FT engine in my Renault 19 Convertible but running on MSII V3.0 with MSII Extra code to control boost and launch.

I have the car running pretty good on low loads, tonight or tomorrow going to run on highter loads and tune the VE table. I found the ignition table on the forum here, but probably need some fine tuning.

Anyway, my goal is to learn a lot of EFI and upgrade to bigger turbo and/or compressor to gain torque in lower revs with all necessary upgrades, but keep the internals stock.

I hope to finish this week and get it on the dyno to compare it with the original ECU (Chipped by Rica The Netherlands)

Wout

post here your ignition setup, trigger imput wiring and output spark wiring for ms2
thanks

I think the wiring for MS2 is pretty similar.

As for that ignition map that was posted up here some time ago, I don't think you'll get much power from it. I would post my MSQ file up, but my LC-1 has died on me (after about 10 hours use!!).

Input trigger wiring is directly from the stock VR sensor to vr-input. Direct coil control from pin 36, removed the stock coil controller from the coil.

I''ll post the ignition set up shortly.

Why do you think the posted ignition map won't do a lot of power?

With the B18FT, with its Hereon head and good 95 octance fuel I would have thought peak advance would be in the 32-35 degree range.

Just did some full load runs, some misfires under full load so had to extend dwell time but performance is now very close to the Rica chip, maybe even better. I'll do some fine tunig next weeks and get it on a dyno with each ECU's (Rica Chip and MSII) to compare.

please tell me your toothed wheel setup

ok, here we go:

Tach input / Ignition Options:
Spark mode: Toothed Wheel
Trigger Angle / Offset (deg): 0.00
Ignition input Capture: Falling Edge
Spark Output: Going High
Number of Coils: Single Coil


More Ignition Settings:
Fixed Advance: Use Table
Use Prediction: First Derive Prediction
Cranking Dwell: 6ms
Cranking Advance: 10deg
Dwell Type: Standard Dwell
Maximum Dwell Duration: 3.8ms
Acceleration Compensation: 1ms
Maximum Spark Duration: 2.0ms

Trigger Wheel Settings:
Trigger Wheel Arrangement: Single wheel with missing tooth
Trigger Wheel Teeth: 60
Missing Teeth: 2
Tooth #1 Angle (Deg BTDC): 258.0
Wheel Speed: Crank Wheel

Please note that some of above listed options are only available in MSIIExtra code, so you might have to ignore some of them. If I remember correct some of the settings are in teeth in the earlier codes, but changed to degrees in the MSIIExtra codes so keep that in mind (1teeth equals 6 degrees)

thanks a lot, great info, i have upgrade my ms2 to extracode


ignition imput capture: falling edge?.... i was convinced that rising edge is the right option... but i'm just assuming and your MS is running

i need to read parts of the manual again.
an one more thing.... the autotune option has dissapeared in extracode.... i'm right?

best regards,
Florian