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Saturday, 16 April 2011

Mounted sensors in motorbay for MegaSquirt and tested everything today...

Have mounted the coolant temperature sensor and TPS on the motor today, the intake air temperatur sensor is just laying loose next to the air-filter until I remove the fuel distributor and replace it with my stripped one.
Connected all sensors to the MegaSquirt relay board and a vacuum hose to the MAP-sensor (located on the MegaSquirt ECU). Now all inputs to the MegaSquirt system are in place, the only thing left is to mount the electrical fuel-injectors which will be done as soon as I'm familiar with all settings in the tuning software.
All cables are drawn temporarly until I do the final swap...

After everything was connected I started her up and I could see all data from the motor live on my laptop, it looks like the "fuel" map is quite good since I moved around in the right part of the curve according to RPM and MAP (vacuum in the intake manifold).

Coolant sensor in place

Coolant sensor
Relay board

TPS(Throttle Position Sensor) in place

Relay board

Live view on my laptop

Thursday, 7 April 2011

The car is now sprayed with rust protective coating (Dinitrol)...

Took some photos underneath the car...
The firm used Dinitrol for the coat.








Got a bright idea, use the spare fuel distributor...

I have had some thoughts about how to mount the airfilter to the throttle-body when I swap fuel-system, then I remembered that I had a spare fuel-distributor which sat on the spare motor I bought and it doesn't fit on my car anyway...

I stript it from the air-scale, plugged the hole where the actual fuel.distributor was mounted and made a new hole for the intake tempature sensor (IAC).

IAC mounted and the hole plugged.
By doing this I can use my current airfilter without any modifications.
Modified Fuel Distributor Body

Saturday, 2 April 2011

Building Relay board and MegaView

Got the parts I ordered from https://www.diyautotune.com this Friday. I have now spent a couple of hours to build the Relay board and the MegaView unit and it did work at first attempt.

The Relay Board will be mounted in the engine bay and is connected via a DB-37 cable to the MegaSquirt ECU, 12V power supply, all sensors and injectors are attached to the Relay Board. The MegaView board are connected via a standard serial cable to the ECU. MegaView is an add-on accessory for the MegaSquirt  system, providing real-time display of all engine operating parameters, and allowing for the edit of any configuration variable in the MegaSquirt ECU.

I'm now planning to mount all sensors used by the MS. By doing this I can monitoring all parameters and tune the system while I am driving the car still using the CIS system. When everything looks ok...
  1. Remove the CIS system's fuel distributer and injectors...
  2. Put the new Bosch injectors in place...
  3. Connect fuel hoses to the fuelrail and off we go... 

Test board connected to the MS ECU instead of Relay bord