Aftermarket ECU for 7M-GTE - Toyota Nation Forum : Toyota Car and Truck Forums

jdmsuprarhd · 02-28-2005, 11:50 PM

My buddy in Japan just sent me a Mines Japan aftermarket ECU for my 7M-GTE cant wait to get it here and install didnt know they made and aftermarket ECU. Aparently nobody on here did either. If you guys want one just pm me and i will see what i can do. It is cheaper to go through my friend in japan than the company because it is cheaper.

S92GT · 03-01-2005, 03:07 AM

Aftermarket JDM ECU?? can he get ones for other cars, besides the supra? I.E. my celica? 5sfe?
thanks!

***bgrieger*** · 03-01-2005, 08:37 AM

Got any english language details on the ECU, programming, tuning, etc? Techtoms are fairly cheap here, tunable to the exact car and reprogrammable.

S92GT · 03-01-2005, 09:42 AM

techtoms? what's that?

Tofuball · 03-01-2005, 10:00 AM

I like the megasquirt

http://www.megasquirt.info/

Jeeves · 03-01-2005, 10:32 AM

My friend has one. Has raised FCO (Fuel Cut Off), Rev Limits, more aggressive timing maps, etc.

The Techtom is an addon board for the TCCS that allows you to have multiple settings. An 87 fuel map setting, 91, Limp Duck mode, Valet mode, etc... However, compared to things you can do today (eManage and such) it's not cheap, and the tuning can't be done by you, you have to send it off and that sucks.

Megasquirt doesn't have squat on the TCCS Computer.

***bgrieger*** · 03-01-2005, 01:30 PM

So the Mines is more like the chip upgrades available for domestics with some added features. Cool. I knew they were out there, if normally tough to get, but never knew much about them.

I guess we're lucky in Toronto...~$800US gets the techtom and the authorized dealer is a hell of a tuner of them. He has the eprom burner on site, and usually has them done in a couple of hours.

jdmsuprarhd · 03-01-2005, 11:13 PM

No they do not make one for the 5sfe i already looked for rapeacivic.

Well this is a whole ecu upgrade its an actually ecu computer box it is called the vx-rom.

Tofuball · 03-07-2005, 10:40 AM

Quote:

Originally Posted by Jeeves

Megasquirt doesn't have squat on the TCCS Computer.

How about the fact the megasquirt costs $140?

You can also tune it with your laptop, you dont have to send it off. User tuning is a big plus.

It does to ignition and fuel maps, even water injection and Wideband O2 sensors. Datalogging, EGT and Knock inputs, you name it.

It is a full standalone ECU, not a piggyback or plug in chip.

Jeeves · 03-08-2005, 12:23 AM

Quote:

Originally Posted by Tofuball

How about the fact the megasquirt costs $140?

You can also tune it with your laptop, you dont have to send it off. User tuning is a big plus.

It does to ignition and fuel maps, even water injection and Wideband O2 sensors. Datalogging, EGT and Knock inputs, you name it.

It is a full standalone ECU, not a piggyback or plug in chip.

The TCCS is the factory computer. On top of that the MegaSquirt is a Fuel computer only. It's not designed to be a 'full standalone'. Sure, it may have inputs for those things. But I've never seen a megasquirt successfully control the Timing on a 7M. Even eManage required a hack for it to work.

Tofuball · 03-08-2005, 03:55 PM

Yes, I know it is the factory computer, thats why it requires so many workarounds (such as an S-AFC or reflashing the chips or so on, along with having to be mailed off to be reflashed and all)

Dude, it isnt just fuel only. It has an ignition module. It is controlling the ignition of my RX-7 (and we all know how much fun RX-7 ignitions are). Read up on it. The ignition module doesnt come pre-installed because most people using the megasquirt tend to have distributors.

And the whole thing is a 'hack,' it's DIY.

How can you say it isnt a 'full standalone?' It totally replaces the ECU! It's DESIGNED to be a full standalone, read the site!

Jeeves · 03-08-2005, 07:03 PM

I've read up on it. You show me someone making more than 700hp on the megasquirt system and I'll concede. Until then, The highest HP 7M's are all running the TCCS + S-AFC + VPC.

AkumaKuruma · 03-09-2005, 07:59 AM

megasquirt is a full aftermarket ECU thats dirt cheap and fully programmable. i personaly wouldnt use one as i dont see the need for an aftermarket ECU on my car but it does fully replace the ECU and would eliminate the need for other devices such as an S-AFCII or other air/fuel modifier electronics. also supporting use of a wideband O2 sensor signal for full driving as opposed to narrowband signal thats used by stock ECU.

for reference the megasquirt setup i looked at IF i ever got it came out to be about $370 for the main module, display screen, and wire harness plugin wires so i dont have to hack away at the stock harness.

the fact that its also programmable..you can add more features to the unit later on down the road. and it does control other stuff like tofuball mentioned like water injection. also can be used as a boost controller thats throttle based i believe.

future upgrades will add more functionality im sure and you can program it yerself if you know assembly/c++ to add in your own special features.

Tofuball · 03-09-2005, 09:01 AM

Common, my friend; you know that reasoning is just a tad off . . .

My original case had nothing to do with the MegaSquirt being an established EMS for the Supra.

I am just listing it as an option, and debating your (valid, but outdated) points that:

1) “MegaSquirt doesn't have squat on the TCCS Computer.”
2) “The MegaSquirt is a Fuel computer only”
3) “[MegaSquirt is] not designed to be a 'full standalone'.”
4) “I've never seen a MegaSquirt successfully control the Timing on a 7M.”

The MegaSquirt now has a module to control the Supra’s stock coil packs. It is a full standalone, you can even ditch your Air Flow Meter entirely (forget grabbing one off a Lexus)

I am not saying the MegaSquirt is for everyone, my original post(s) didn’t say anything like that. I don’t know why you are attacking the MegaSquirt as a viable aftermarket EMS solution, my guess is that you are either working with older information (the MegaSquirt has evolved since then) or that you prefer to stick to proven and/or name brand technologies. It costs half as much as an SAFC and does so much more.

Tofuball · 03-09-2005, 09:04 AM

Using a peak HP number is not a good way of measuring up one EMS against another EMS. If you tell an injector to inject at a given pulse width and duration, it does just that, it doesn’t matter what brand of computer is ordering it to fire at that given pulse width and duration. It isn’t like the injector sends back a signal asking "ARE YOU A TOYOTA ECU?! YES!? OMGLOL NOS!!1!"

(Also, consider the fact that 700HP MKIIIs aren’t exactly the kind of car you see rolling down the road every day. Even your Supra is a ‘lowly’ 262RWHP, a far cry from 700HP expected out of the cars of today)

But let’s say that the MegaSquirt cannot deliver 700HP for some reason; Even then, not everyone's application is even for 700HP. Some people just want an EMS that integrates the use of a Wideband O2 sensor or handles water injection, or handles the timing and fuel changes accurately for N2O injection.

A true mesure of an EMS is what it does BETWEEN those numbers. If you're going for full out top HP numbers, you're not going to see much difference between a hacked stock EMS, a $100 EMS, an $800 EMS, a $1,200 EMS, or even a well tuned Carb setup.