Welllll than...... A couple new things in this update, and possibly a second post regarding some stuff I've been 3D modelling for the build.
First up, managed to install this 5V oil pressure sender and input it into the Megasquirt for full datalogging and dash display through Shadow Dash. The tablet mounted using two magnetic mounts clipped to the eye-ball vents. Works very well and has a very strong hold.
It was surprisingly easy to get working, the sender needs +5v, ground and signal return to the ECU. I happened to use the AD6 input on my Megasquirt, and TunerStudio has a built in wizard to configure your sender.
Developed a slight oil leak into cylinder no. 4 so took valve cover off to replace the gasket. Remember to go genuine valve cover gasket! I've had nothing but trouble with non-genuine valve cover gaskets.
Finally bought some new tyres and fresh alignment done! Hankook RS3 225/45 R15.
Received and installed my IL Motorsport bonnet lifts, not sure if I like them yet.
Next up, I had some spare parts accumulating and was able to put together this LED bar kit. It's operated via RF remote control that looks like a bomb detonator, the LED light bar and associated electronics (now enclosed in water-proof case) are mounted just behind the front bar.
Garage Star Coil-on-Plug adapter acquired!
Toda forged pistons!!! They are 11.0:1 compression ratio and +3mm overbore, made from a special alloy with very littler thermal expansion which allows it to run factory Mazda piston-to-bore clearances. Toda also designed the skirt to allow usage of factory oil squirters. I also ordered the matching overbore head gasket from Toda.
Some close ups of the pistons.
Dropped my engine off last week at the Auto Xperts, they did an excellent job and degreed my cams to the recommend specs. Final adjustments will be made on the dyno.
Picked her up this morning and have been on it since than.
After the crank bolt was correctly torqued, I started on assembling the timing cover and ITBs.
Some close-ups of stuff.
Lightened flywheel and clutch going in.
Engine going back in 😀
Thought I would do a quick post about this great piece of software called MSDroid.
From their website:
"Android + MegaSquirt
msDroid is an application for Android smartphones and tablets being developed for use with the MegaSquirt® range of electronic fuel injection controllers. It aims to provide logging, fully customisable gauge dashboards, tuning, and graphical log viewing. This shall remain a completely free application. This application is presently in alpha development."
It has the ability to connect to your Megasquirt via Bluetooth or USB OTG. Your phone/tablet must have USB OTG support and you simply connect your existing USB-to-Serial RS232 adapter into your phone. USB OTG cables can be found on eBay for a couple of dollars.
Quick proof of concept below. I will be wiring in oil pressure and oil temp sensors soon. They will go directly into the Megasquirt's ADC inputs and I will be able to display them in MSDroid as well as data log. Cool thing about the MSDroid software is that it runs off the standard Tunerstudio INI files 😀
I did a quick guide on the Bluetooth module, link below.
Last week Josh asked me to help him update the firmware on his DIYPNP Megasquirt ECU, he also needed a base map loaded. So he posted it from Melbourne to Brisbane and I got it early this week.
Josh purchased the ECU second hand off the forums, was told it was working (and I don't doubt that it was) but the surprises came when I opened up the case for a closer look... This is what I found:
- at least half of the solder joints throughout the board were beyond terrible
- about a dozen pins/legs had no solder at all
- the ends of wires were snapping as I was de-soldering
- a handful of lengthened wires which weren't heat-shrinked
- tape had fallen off one of the lengthened wires and fully exposed the connection against the metal case
- loose solder and component pins on the underside, could have easily causes short circuits
- component pins bent towards each other, more possibility of short circuits
Even if the ECU was working fine, I wouldn't be surprised it failed very quickly in a car environment (heat and vibrations).
So I fully stripped all the wiring off the board, re-soldered every joint, cleaned/removed all the flux, re-wired the connector board, updated firmware and loaded a base map.
Below are some before and after photos.
The wiring was a huge mess, lengthened wires and a lot of fatigued joints which eventually resulted in snapped connections. In the center of the photo you can see the joint that was exposed because tape fell off.
These next photos were taken after I re-worked the ECU.
My preference is to have the jumper wires on the component side because it places less strain on the wires, helps reduce any fatigue. It also allows easy view of the connections without removing the entire circuit board.
Just some quick photos of the COPs Bracket installed on my engine, I gave it a quick coat of satin black enamel paint too. Came out great and really suits my painted valve cover.
Now with the COPs bolted onto the bracket.
This is something I've been wanting to do for a long time, implementing Bluetooth connectivity for my Megasquirt ECU.
No more cables for tuning and data logging, I can even use my Android smartphone/tablet for data logging and digital gauge/dashes. The Android App is called Shadow Dash MS, free of charge from the EFI Analytics.
You can buy "off the self" devices that are plug and play, around $50-$100, but I've decided to take the DIY route which cost me $12!
There is a bit of work to do like adjust settings as well as some soldering.
1. The module needs to be jumpered temporarily so settings can be applied.
2. Use some paper to insulate pins 6, 7, 8 and 9 on the DB9 Male connector. And than solder a wire from pin 9 to V+ pad, this is next to the break-out pins.
3. An external +5V supply has to applied to the break-out pins.
So that completes most of the modifications needed, now on to software. I used Microsoft Hyper Terminal, which is available on Windows XP machines. You can download it below:
1. Connect the module to your serial port, or your USB-Serial adapter.
2. Open up Hyper Terminal and create a new connection. Select your serial connection's COM port., mine was COM4. The settings below should be applied.
3. To confirm that the connection is correct, quickly type in AT. It won't display what you've typed but it should display the response OK.
4. Open up Notepad and type the following AT+NAME(insert the name you want here), in my case I typed AT+NAMEomgpham.com . CUT all the text, go back to your Hyper Terminal window and click on "Paste to Host". You should than get a response saying OKsetname.
5. Next up we'll set the PIN Code. So back to Notepad and type in AT+PIN(insert your 4 digit pin here), eg. AT+PIN1234. CUT all the text, go back to your Hyper Terminal window and click on "Paste to Host". You should than get a response saying OKsetPIN.
6. Finally, we'll set the baud rate. By default it's 9600 but this needs to be set to 115200. So in Notepad you'll type AT+BAUD8, CUT all the text than go back to your Hyper Terminal window and click on "Paste to Host". You should than get a response saying OK115200.
The reason we have to cut and paste commands from Notepad is because Hyper Terminal needs commands to be typed completely in under a second. Stupid? Yes, but ah well.
So everything software wise is now done, this next part is optional and it involves removing the female DB9 connector which is used for applying settings. It's the connector that plugs into your computer's serial port.
Had a chance to try out TunerStudio's "Output Test Mode", basically allows you test fire your injectors and coils. Something I really wanted to do because I wired my coils for sequential fire.
Firing order is 1-3-4-2 so they are wired as such:
- Cylinder No. 1 - Spark A
- Cylinder No. 2 - Spark D
- Cylinder No. 3 - Spark B
- Cylinder No. 4 - Spark C
I initially wired them in the wrong order but luckily I caught on this error early.
I also had a chance to change the transmission front seal and gasket.
So my first attempt for the ECU mount was a failure, it sucked and was messy looking. This next mount attempt is so simple, not sure why I didn't think of it first. Checkout the photos below.
I've been dreading this part of the build, was never sure how I would do it and make it neat. But everything is coming together now and so I had to do something.
Because my custom fuse/relay panel sits where the ECU normally goes, I've had to install the ECU in the glove box. It's not a bad spot to put it, just my solution isn't "clean" for my liking.
I also decided to use the stock tombstone, goes much better with the rest of my interior. So the KG Works tombstone will be up for sale soon.
Update time! Head isn't finished yet so I've been doing a few odd jobs here and there.
One thing I did was start on the brake prop valve relocation. It's not necessary but does give me extra space for the velocity stacks, might be able to increase it's length later down the track too. So I picked up some angle aluminium plate for $5 and started cutting that up.
Here is the capacitor used for the COPs install, it's needed because the battery is in the boot and can cause voltage drops when the coils fire. The capacitor helps by storing a reserve of power and eliminates any voltage drop. Well that's what I think it does =P
Ordered these velocity stack booties from Outerwears, quality seems good but I'm not 100% sure they will provide enough filtering. So might experiment with some foam as well.