Takes in wideband info, uses a MAP sensor, build it yourself in <8hrs. Im sold!
http://www.bgsoflex.com/megasquirt.html
my friend is putting one on his volvo (dont laugh) and should be running within the next 24hrs. If it works, i guess i'll be getting one too!
$110 standalone
Not a good idea:
"Installing the MegaSquirt controller in a vehicle that already has EFI means you will need to consider how you will run the ignition and any other devices the OEM ECU controls [such as the transmission, speedometer and other gauges, and emissions devices], how you will interface the MegaSquirt to your existing wiring harness, and whether you can reuse your existing sensors. "
Have fun rewiring everything.
"Installing the MegaSquirt controller in a vehicle that already has EFI means you will need to consider how you will run the ignition and any other devices the OEM ECU controls [such as the transmission, speedometer and other gauges, and emissions devices], how you will interface the MegaSquirt to your existing wiring harness, and whether you can reuse your existing sensors. "
Have fun rewiring everything.
The ECU controls more than just fuel and spark, it controls all of your gauges, all of your sensors, etc. Your sensors may put out a totally different signal than the GM sensors so you may have to manufacture ways to adapt GM sensors into their place. I think this stand-alone was mainly designed for the old carborated guys who want to go EFI.
BaliLover is right, Megasquirt was first designed by guys wanting to convert their carbureted cars to electronically controlled throttle body injection. You can use it for up to 8 seperate inectors, but it isn't sequential, it's batch fired (there are only two drivers). If you know enough about electronics, you can easily modify the design and make it sequential. The Wideband setup is a seperate DIY project, and requires modification to the Megasquirt design to utilize the signal produced by the seperate wideband O2S unit.
There are also more DIY-EFI systems out there besides Megasquirt. I have a fairly good understanding of electronics fundamentals, but my ability to apply it is severely limited. I plan on building a Megasquirt or similar DIY-EFI system as a learning experience to convert my beater VW Golf GTI from CIS to EFI. These systems are a great way to learn about electronics and engine management. But until you have enough knowledge and experience under your belt, it should stay as an experimental project, and off of your daily driver or prized engine, even though most guys report great reliability. If you learn enough, you can just design your own stand alone that will control fuel and ignition, and have all kinds of features you want. If it's good enough, you can refine it and sell it. That's what I hope to do someday, a few years dowm the road.
There are also more DIY-EFI systems out there besides Megasquirt. I have a fairly good understanding of electronics fundamentals, but my ability to apply it is severely limited. I plan on building a Megasquirt or similar DIY-EFI system as a learning experience to convert my beater VW Golf GTI from CIS to EFI. These systems are a great way to learn about electronics and engine management. But until you have enough knowledge and experience under your belt, it should stay as an experimental project, and off of your daily driver or prized engine, even though most guys report great reliability. If you learn enough, you can just design your own stand alone that will control fuel and ignition, and have all kinds of features you want. If it's good enough, you can refine it and sell it. That's what I hope to do someday, a few years dowm the road.
Well crap. BTW - I already have a wideband setup and was just planning on feeding data from it to the megasquirt, but doesnt sound as easy as I first thought.
I take from what you said the KA ECU uses sequential firing?
I figured I would have to utilize a GM coolant temp sensor, and possibly a GM TPS sensor, but had no idea the ECU was used for the speedometer, which kinda puts a damper on things because i like to know how much over the limit i'm going
I take from what you said the KA ECU uses sequential firing?
I figured I would have to utilize a GM coolant temp sensor, and possibly a GM TPS sensor, but had no idea the ECU was used for the speedometer, which kinda puts a damper on things because i like to know how much over the limit i'm going
-
cnichols
- Posts: 1736
- Joined: Tue Aug 06, 2002 6:07 pm
- Car: 96 Nissan 240SX
99 Infiniti Q45
93 Ford Fastiva - Location: Bowling Green, KY
- Contact:
BaliLover wrote:The ECU controls more than just fuel and spark, it controls all of your gauges, all of your sensors, etc. Your sensors may put out a totally different signal than the GM sensors so you may have to manufacture ways to adapt GM sensors into their place. I think this stand-alone was mainly designed for the old carborated guys who want to go EFI.
I believe the TPS and Coolant Temp are interchangeable (wiring wise...obviously not phyically), but not sure about the others.....good luck with the IAC area...I had an adapter plate made for the back of the intake manifold that houses a GM style IAC.
Keep it simple, replace old factory crap, and do it for less. Megasquirt has my interest. Implement it with a good inginition system, full aftermarket gauges (my car is odemeter exempt anyway) and go all out custom on it. It could be powerful. two injector drive channels is sequential enough for a 4 cylinder engine. They fire two cylinders at a time anyway dont they? i wanna say 1 and 3, 2 and 4 but i dont remember.
A full megasquirt/ignition/guages setup lets you buy a cheap engine that has no harness or ECU, spend that money on some guages that will be usefull, and you get mad props on a full custom job. Who needs a speedometer that goes to 115mph or one thats in Kilometers anyway? Give me a 10k tach, and a 200mph speedo dangit! I can see me building my own cluster, doing a full custom wiring job, and all that crap. Maybe, if i dont get lazy and just install a frontclip stock.
A full megasquirt/ignition/guages setup lets you buy a cheap engine that has no harness or ECU, spend that money on some guages that will be usefull, and you get mad props on a full custom job. Who needs a speedometer that goes to 115mph or one thats in Kilometers anyway? Give me a 10k tach, and a 200mph speedo dangit! I can see me building my own cluster, doing a full custom wiring job, and all that crap. Maybe, if i dont get lazy and just install a frontclip stock.
-
cnichols
- Posts: 1736
- Joined: Tue Aug 06, 2002 6:07 pm
- Car: 96 Nissan 240SX
99 Infiniti Q45
93 Ford Fastiva - Location: Bowling Green, KY
- Contact:
Who needs a speedo? 
http://www.streetelite.net/thumbs.htm
There's my custom cluster with (left to right)...EGT, Tach, Boost and the Wideband O2 sensor. My Oil pressure, Oil temp, and Water temp are 52mm HKS gauges in the HKS DIN holder underneath the stereo.
http://www.streetelite.net/thumbs.htm
There's my custom cluster with (left to right)...EGT, Tach, Boost and the Wideband O2 sensor. My Oil pressure, Oil temp, and Water temp are 52mm HKS gauges in the HKS DIN holder underneath the stereo.
Sequencial injection can improve atomization and emissions. Both will dump in the correct amount of fuel. Being able to fire each injector when the valve is open keeps fuel from puddling on the back of the valve. Spraying fuel on the valve keeps it cool. If the valves stay hot enough spraying the fuel onto the back of the valves actually helps atomization.Either will work when tuned properly.
The other thing you can do is order an SR ECU mod board from those guys in Australia and use the freeware tuning tools for the SR on the KA. The maps for the S13 256kbit program seem to line up on my modded KA ECU.
The other thing you can do is order an SR ECU mod board from those guys in Australia and use the freeware tuning tools for the SR on the KA. The maps for the S13 256kbit program seem to line up on my modded KA ECU.
-
Pornflakes
- Posts: 140
- Joined: Fri Jan 17, 2003 7:36 am
- Contact:
The only gauge that is controlled by the ECU is the tachometer. I only feed the tachometer off of my Electromotive TEC3, and all the other gauges work perfectly (the stock ECU is completely removed). The speedometer reads off of a speed sensor, not the ECU.
The only thing you'll have to be creative with, is trying to figure out a way for ignition, since the stock ECU controls the ignition module, which controls the coil.
I'd say save yourself a headache and get an aftermarket ECU such as the Electromotive TEC3 or Haltech. The TEC3 ditches the stock ignition system/crappy distributor alltogether, and replaces it with an extremely powerful direct fire ignition system (coil per plug) without a distributor.
The only thing you'll have to be creative with, is trying to figure out a way for ignition, since the stock ECU controls the ignition module, which controls the coil.
I'd say save yourself a headache and get an aftermarket ECU such as the Electromotive TEC3 or Haltech. The TEC3 ditches the stock ignition system/crappy distributor alltogether, and replaces it with an extremely powerful direct fire ignition system (coil per plug) without a distributor.
-
Pornflakes
- Posts: 140
- Joined: Fri Jan 17, 2003 7:36 am
- Contact:
Hey Rick,
I worked with Electromotive to have the trigger wheel machined onto the actual crank pulley. All you have to do is send me the stock pulley, and I'll have Electromotive machine the trigger wheel on it (I'm a dealer for Electromotive).
Some pics:
Regarding the installation, I was able to use existing sensors, except for the MAP and MAT (these had to be added to the vehicle). Stock coolant sensor and TPS work perfectly. The crank trigger wheel and sensor are now bolt-on, so that's not a problem anymore. The stock ignition and distributor is replaced with a direct firing unit, which is basically 2 huge coils directly wired to the spark plugs (waste spark).
I was able to install everything in 5 days, putting about 2~4 hours a day into it.
The software is user friendly, and sets up a base program based on injector size and some other parameters, to get your engine running. You can then tune that program to optimize the engine. Every single parameter is adjustable. You can contact me at [email protected] if you wish.
I worked with Electromotive to have the trigger wheel machined onto the actual crank pulley. All you have to do is send me the stock pulley, and I'll have Electromotive machine the trigger wheel on it (I'm a dealer for Electromotive).
Some pics:
Regarding the installation, I was able to use existing sensors, except for the MAP and MAT (these had to be added to the vehicle). Stock coolant sensor and TPS work perfectly. The crank trigger wheel and sensor are now bolt-on, so that's not a problem anymore. The stock ignition and distributor is replaced with a direct firing unit, which is basically 2 huge coils directly wired to the spark plugs (waste spark).
I was able to install everything in 5 days, putting about 2~4 hours a day into it.
The software is user friendly, and sets up a base program based on injector size and some other parameters, to get your engine running. You can then tune that program to optimize the engine. Every single parameter is adjustable. You can contact me at [email protected] if you wish.
I've got a couple questions Pornflakes.
Does electromotive have a system that is able to utilize a wideband O2S for closed loop operation?
What did you do about blocking off the distibutor hole?
How much would an entire ready to run system cost (ECU, all needed sensors, crank pully machining, etc.)?
Thanks
Does electromotive have a system that is able to utilize a wideband O2S for closed loop operation?
What did you do about blocking off the distibutor hole?
How much would an entire ready to run system cost (ECU, all needed sensors, crank pully machining, etc.)?
Thanks
Re: $110 standalone (SloS13)
SloS13 wrote: Great Standalone ECU
http://034motorsport.com/index...a966c
If it works good, i guess i'll be getting one too!
Re: $110 standalone (hazw8st)
Holy **** this is an old post.
I've got a MS 2.2 built now. kinda lazy about installing it though. Currently installing an MS 2.2 in an AE86 tho
Edit: the volvo mentioned in the first post (8/4/2003 LOL) is now trapping 107.
I've got a MS 2.2 built now. kinda lazy about installing it though. Currently installing an MS 2.2 in an AE86 tho
Edit: the volvo mentioned in the first post (8/4/2003 LOL) is now trapping 107.