Megasquirt Stuff

[linuxman51]

Assembled v2.2 and v3.0 boards, daughter cards, etc.
Here's the breakdown reader's digest condensed style, with details below:

V2.2 pcb, cd, unterminated harness, and serial cable: $300 shipped in the US (I will ship overseas, just hit me up and we'll figure out the difference in shipping)

V3.0 pcb, cd, harness, cable: $370

Daughter card with either of the above: +$75 (for egt logging add another 25)

MSII chip on either pcb: +80

paypal, mo accepted. I'm located in alabama, one can reach me via email (howarkd at auburn.edu), instant messenger (kdh51), or occasionally via pm's here :)

I've built and sold over 80 v2.2's without inncident, and aside from minor growing pains on the v3.0 boards they've turned out nice as well. They are tested before leaving.

here's a side by side pic of both:
http://www.pbase.com/kdh51/image/50402179.jpg


The cd comes with detailed instructions on how to install and set up megatune for the version of extra (or ms2) on your controller, its also got a few other utilities and some example maps (for a volvo 4 banger right now, i'll raid donnie's stash of 6m maps), and a couple wiring diagrams. I'll talk to donnie about his setup, but he tends to frown on retaining stock wiring. I'd be willing to do a more or less "plug and play" setup if theres interest, what i'll need to do that however is a pinout for the ecu/years. something like that would be probably an additional 80-100 bucks, with a core ecu. for the cali folks i'll put it inside the box, the core doesnt have to be functional aside from having a useable plug, and preferably no blood/bullet holes. Hopefully in the near future the heebspeed clan will have a definitive writeup on doing a 7m gte, a few folks on msefi have already done this with reasonable success it seems, so I dont anticipate any major problems there.
At that point the cd will also be updated with that wiring diagram.

[Bay_707]

so it comes with the harness for plug n play just to confirm? sorry too lazy to read the thread :P

[BuddyJ]

I'd be willing to do a more or less "plug and play" setup if theres interest, what i'll need to do that however is a pinout for the ecu/years. something like that would be probably an additional 80-100 bucks, with a core ecu.

Guess it comes down to how much you wanna pay. At least you know you're getting quality.

[BillyM]

"unterminated harness, and serial cable: $300 shipped"

"I'd be willing to do a more or less "plug and play" setup if theres interest, what i'll need to do that however is a pinout for the ecu/years. something like that would be probably an additional 80-100 bucks, with a core ecu."


...there you go Bay, *pats head, wipes drool off chin*


Linuxman, that's a nice offer you've got there. I'll be in touch in the future, just keep it up.

My only question is, have you got the maps built for the yota sensors, or using the suggested GM stuff on donnies car?

--BillyM

[linuxman51]

Donnie's car has retained the toyota coolant temp sensor, since the car (at least as far as i know, feel free to correct me if i'm wrong) did not come with an air temp sensor its easy and cheap to do the gm thing for that.

but yes, the firmware is adjusted with the toyota ect in mind :)

[cheappower82]

correct sir; no air temp sensors on our generation. the gm sensor is like $12. it's, how you say, "ballin on a budget"

[2slow4you]

I read...course I just got up so don't mind me much..... But that gentalment builds MSnS and has a harness to PnP with our factory harness?? That's pretty f'n sweet if I actully read what I thought I read if not I'm gonna roll over and go back to sleep lol

[linuxman51]

I read...course I just got up so don't mind me much..... But that gentalment builds MSnS and has a harness to PnP with our factory harness?? That's pretty f'n sweet if I actully read what I thought I read if not I'm gonna roll over and go back to sleep lol

its a possibility, its gonna take some detailed wiring diagrams and probably a sit down discussion with some folks to make it happen in an effective mannor.

[2slow4you]

I'm goin MS soon if you get prototypes I'll be more than happy to pay for one and be a test dummy for ya. The only thing I really want at the moment is for a damned 6m harmonic balancer/crank pulley w/e you all wanna call it lol

[linuxman51]

I'm goin MS soon if you get prototypes I'll be more than happy to pay for one and be a test dummy for ya. The only thing I really want at the moment is for a damned 6m harmonic balancer/crank pulley w/e you all wanna call it lol


Need wiring diagrams in order to even consider the idea :) Cheappower will frown heavily, hes a big fan of "just rewire everything and call it a day", but increasingly people seem to rather have the option of unhooking if need be.

[cheappower82]

here's your damn wiring diagram for an 85-86 (http://www.cygnusx1.net/supra/library/TSRM_MKII/e/E_001.html)

[linuxman51]

here's your damn wiring diagram for an 85-86 (http://www.cygnusx1.net/supra/library/TSRM_MKII/e/E_001.html)


such attitude, am I going to have to slap a ho?

[MWebber]

hahaha.... you two crack me up

[cheappower82]

such attitude, am I going to have to slap a ho?

guess you want a pinout too, crybaby :swing:

[linuxman51]

guess you want a pinout too, crybaby :swing:


We'll discuss that next time you need help getting that sled to run right ;)

[Dean]

Donnie's car has retained the toyota coolant temp sensor, since the car (at least as far as i know, feel free to correct me if i'm wrong) did not come with an air temp sensor its easy and cheap to do the gm thing for that.

but yes, the firmware is adjusted with the toyota ect in mind :)

Our cars have an air temp sensor built into the AFM. At least 83 and newer Supras do. I think 82's have it as well.
Pin 3 to pin 7 on the AFM connector give a resistance value that varies with temp, giving intake air temp info to the ECU. The TSRM calls it "THA" at the ECU end. The water temp sensor is called "THW" at the ECU.

[grahamus]

Plug and play megasquirt sounds like a great idea. I've got a friend with a 300zx tt Thats been talkin' sh*t . My 6mg needs turbo bad, then I'll show him, toyota kicks ass!

[cheappower82]

Our cars have an air temp sensor built into the AFM. At least 83 and newer Supras do. I think 82's have it as well.
Pin 3 to pin 7 on the AFM connector give a resistance value that varies with temp, giving intake air temp info to the ECU. The TSRM calls it "THA" at the ECU end. The water temp sensor is called "THW" at the ECU.

But who wants to keep the AFM just for air temp?

[Dean]

But who wants to keep the AFM just for air temp?

Not me!
I'm just pointing out that the Mk2 does have an intake air temp sensor, since someone else said it didn't.
You could bust apart the AFM and remove the air temp sensor and use it, or you could probably get one from some other car for very low cost and use it with the Megasquirt.

[williamb82]

thats why i went ahead and got the gm air temp and engine temp sensors. i know the stock engine temp would work but it seems easier to set it up for the gm unit. also, should the air temp sensor be mounted before the turbo, or after? and if after, should it be before or after the intercooler? im assuming after the intercooler would be best as thats the actual temp of the air entering the engine, but not sure the sensor woud handle boost well.

[cheappower82]

Mine's a few inches before the TB, pretty much the same distance that it was on the stock intake pipe:

http://www.pbase.com/celicaxx/image/39321068/large.jpg

[linuxman51]

The air temp sensor is a solid state sensor, so it doesnt matter where you put it. It'll sustain a fair amount of pressure before it implodes (several thousand psi I would suspect).

It doesnt really matter where you put it, I would either put it after the air filter before the turbo, or after the intercooler. and leave it there after you tune (or you might end up having to re-fine tune it)

Starting an install on an 89.5+ mk3 tomorrow, going to retain as much stock wiring as possible. Should be pretty straight forward, I expect to only run a couple of wires outside the stock harness (we'll see how that holds up haha).

I'm taking notes on everything, so i'll have it to refer to later. The same setup tho should work for a 7m gte, with the exception of ignitors to fire the coil packs. (this being distributed will use just one spark output).

pics and hopefully success to follow shortly

[williamb82]

im just making a whole new harness, my current one is old, cooked, and bulky, i plan to make it as thin as possible and also hide the wires where possible.

[linuxman51]

im just making a whole new harness, my current one is old, cooked, and bulky, i plan to make it as thin as possible and also hide the wires where possible.


If it was going on my car I probably would as well. but its not, the car drove in to the shop, so I'ma leave it be ;)

[linuxman51]

Got an 89 supra turboed and ms'd this past week (After some growing pains), could have retained the stock harness but got thrown a couple red herrings by what turned out to be a resistor pack problem. Didnt have time to fully flesh out the issues with the 7m ge distro, ended up taking out 2 teeth on the top wheel 180 appart, and cutting the pickups off the lower wheel, but it cranks up and runs smooth as glass.

td06-20g with 550 injectors, NA motor and the usual stuff.

[Donn29]

what was done for ignition?