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what do i need to megasquirt my mk3 obd1 golf

by Alycia Christiansen Published 2 years ago Updated 2 years ago
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What kind of wiring do I need for the MegaSquirt ms3x?

MegaSquirt MS3X Wiring Bundle - Length = 8' 8' of TXL High temp automotive grade wire. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! Use with MS3X Expansion board or other sequential device Just ... DB9 6' Male/Female Straight thru cable for tuning and testing your MegaSquirt ECU.

How do I connect MegaSquirt to my racecapture system?

Once wiring and connections are complete, select the Megasquirt preset under Setup / CAN Channels, and then write the changes to your RaceCapture system. Once connected and with the preset loaded, navigate to the Dashboard screen in the RaceCapture app to verify data connectivity.

What is the best MegaSquirt engine controller?

This is the latest top of the range MegaSquirt ECU – the MegaSquirt 3 (MS3)! This controller is jam-packed with features found on aftermarket engine controllers costing 10X as much, yet is easy to use and configure! Extremely popular, the MegaSquirt3 is the absolute best engine controller you can purchase at this price – or any price!

Does the MegaSquirt support CAN bus operation?

Note Ensure the Megasquirt has the correct internal modifications to allow CAN bus operation; usually requiring the addition of jumpers. Please refer to the Megasquirt documentation for more information. Refer to the MS3-Pro MS3-Pro wiring manual for wiring instructions.

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What sensors do I need for MegaSquirt?

In order for your MegaSquirt® EFI Controller to determine the amount of fuel to inject, you will need several functioning sensors:coolant (CTS) and intake air temperature sensors (IAT),a oxygen sensor (EGO) is highly recommended, either narrow-band or wide-band, and threaded bung,More items...

How do you hook up MegaSquirt?

8:5816:47How to Install Megasquirt! - YouTubeYouTubeStart of suggested clipEnd of suggested clipSince the mega squirt runs into your factory harness you're going to hook your wideband. Right intoMoreSince the mega squirt runs into your factory harness you're going to hook your wideband. Right into where the factory o2 sensor goes your wideband is going to have an output signal wire.

How do you wire a Megasquirt ECU?

0:157:22Megasquirt Basic Wiring & Connecting - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd individually not don't connect them all you know back here. And where the ECU is don't connectMoreAnd individually not don't connect them all you know back here. And where the ECU is don't connect them all back at one point sold room and then run one extra one cable down to the engine.

How long is a Megasquirt wire harness?

MegaSquirt Wiring Harness - 8 Feet Long We've completely redesigned our wire harness to help you get your fuel injection installation right the first time with several new features to help make your installation as easy and reliable as possible: ...

What connector does MS3X use?

To make sure you can't accidentally switch the upper and lower harnesses, the MS3X harness uses a male DB37 connector instead of a female one. We've packaged a DB37 male solder cup connector and a metalized plastic backshell for your MS3X builds. See t...

What is a DB15 pigtail harness?

DB15 pigtail harness. Used for optional outputs on the expansion connector on V3.57 boards and for the V1.2 version of the MSPNP Gen 2 (the version with the red main board).

Is Megasquirt relay board required?

MegaSquirt Relay Board - Assembled Unit - Part# MSRelay-C Though the Relay/Power Board is not required, it is a convenience and can reduce the chance of miswiring during the installation. The relay board provides a central place for all of the required...

Applications

VW used quite a number of ignition systems on their water cooled engines. This article covers the Hall effect distributor with four teeth, used on most of the ’80s era inline 8V and 16V motors. Later VWs used a 60-2 crank trigger to drive a distributor, or later, distributorless ignition systems.

Using the MegaSquirt-I (MSnS-E) with the Bosch ignition module

Since there is no need for a VR conditioner or onboard coil driver, this one can use the V2.2, V3.0, or V3.57 board.

Using the MegaSquirt-II PCBv3 with the Bosch 139 ignition module

Build the Hall effect input conditioner circuit, as described in MSExtra’s MS2 Manual. All our preassembled MegaSquirts with the V3.0 board come with this circuit installed.

Megasquirt Wiring

Use the CAN High and Low connections from either CAN1 or CAN2. Typically CAN1 is used, so you would use CAN 1 High' and CAN 1 Low .

Enable Megasquirt CAN broadcast

In TunerStudio, enable CAN mode and burn it to the controller. Once this is done, RaceCapture/Pro will be receiving CAN bus data from the Megasquirt.

Megasquirt Preset

Once wiring and connections are complete, select the Megasquirt preset under Setup / CAN Channels, and then write the changes to your RaceCapture system.

Verifying

Once connected and with the preset loaded, navigate to the Dashboard screen in the RaceCapture app to verify data connectivity.

johnparts Slammed 1

This is awesome. Thank you for this I will be getting to know this thread very well.

67Dart273 FABO Gold Member FABO Gold Member

I think this is "more than" awesome!! Thanks for the write-up and PLEASE update this thread as you go!!

SirDan Well-Known Member

This is really nice, This will help someone a LOT. I run ms3 on my toyota. I am pretty sure ms3 can do knock control but IDK if its enabled in your ms3 computer. might need a jumper or something. I built a diypnp unit so its a bit different.

johnparts Slammed 1

The ms3x also has a prototype section built on the board which may allow the use of a drive by wiressystem. I'm going to look into it.

Re: How to - MegaSquirt on the 1.8t

AWESOME!!!!!!!! my cousin is running mega squirt on his mav. I have always wanted to do it on the audi.

Re: How to - MegaSquirt on the 1.8t

I was surprized that none of you BT guys dont use the new Megasquirt system...

Re: How to - MegaSquirt on the 1.8t

This would be great here in the UK, a lot of the VW Golf II / III boys run MS with their 1,8T conversions.

Re: How to - MegaSquirt on the 1.8t

1) just like any other standalone. I'm not sure how it works in the UK, but if all they do is a tail pipe sniffer, you CAN tune it to pass. However, if they require an OBD-II readiness check, you're out of luck.

Re: How to - MegaSquirt on the 1.8t

Great job on the Howto. Just did a second standalone install myself. Wondering how you checked timing on your car, did you use the marks on the crank pulley or the cam timing marks? If you used the crank pulley, did you do this with the frontend in the service position. I cant seem to read off the crank pulley because of the space constraints.

Re: How to - MegaSquirt on the 1.8t

Great job on the Howto. Just did a second standalone install myself. Wondering how you checked timing on your car, did you use the marks on the crank pulley or the cam timing marks? If you used the crank pulley, did you do this with the frontend in the service position.

Re: How to - MegaSquirt on the 1.8t

VEMS Wiki That's really the only place I know where to get info on VEMS. It's very weird and hard to navigate at first but once you start to understand how it works, you'll find that there is tons of info there. There's a ton of info applicable to other standalones there, too.

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