How do I install this Microtech ECU??
I bought an 89 jdm engine for my 87 turboII and the wiring harness for the 89 motor was cut and I was told to get a microtech ECU so I did.
When I took out the old ecu there were tons more wires than there are coming out of the LT10 so is the microtech really the only ecu I need or do I have to run both the microtech and the my stock ecu or is that even possible? If the microtech ecu is just going to my engine how would it relay things to my dash such as my tachometer or my temperature gauge. Maybe I don’t understand what standalone means when talking about ECU’s I actually don’t know a whole lot about anything car wise so this whole project has been very difficult. Any suggestions on what I need to do? I’m not even sure this makes sense. |
um... you have no diea what your getting yourself into buddy. but ill make it simple for you.
the microtech is a stand alone ems. it replaces everything that controles the engine so taht you ccan fully customise anything dealing with how the engine runs. the dash board shouldnt be affected i dont think. anyways. the cut stock harnes can be thrown in the trash. i would however try and saqve some of the plugs. anyways, im HOPING you can solder. |
...yes you are way in over youre head....you might want to find someone who can install it for you....because theres alot of soldering and alot of electrical work involved, it takes alot of time and patience to install a standalone
|
Originally Posted by 大力士
(Post 6924548)
I bought an 89 jdm engine for my 87 turboII and the wiring harness for the 89 motor was cut and I was told to get a microtech ECU so I did.
Bad News: Whoever told you to get the Microtech neglected to tell you to get it installed and tuned by a professional. Expect 2-14 days and about $1,200 for installation and basic tuning. No, you can't do this yourself, despite what you may read on the internet. Good News: Assuming the rest of the car's components are in good shape, you will have a very nice running car when the pro tuner is finished with the installation and tuning.
Originally Posted by 大力士
(Post 6924548)
When I took out the old ecu there were tons more wires than there are coming out of the LT10 so is the microtech really the only ecu I need or do I have to run both the microtech and the my stock ecu or is that even possible?
|
Well that stinks I have no money but i can solder.
There are three plugs that equal around 40 or so wires that plug into the stock ECU. The Microtech ECU on the other hand only has 24 wires I can splice and solder the Microtech into the engine but how does the engine relay things to my dash like temps boost rpm etc??? I know the speedometer comes from the wire in the transmission and the fuel gauge from the gas tank so I’m not worried about those. Another thing there are wires coming out of both sides of the engine and they also equal more than the amount that comes on the ECU. What will I do with the extra wires the man that sold me the ECU told me that I could and should splice it to the wires sticking out from the engine; Is this correct? I’m a poor college student hardly able to pay bills as it is working full time and I’m borrowing my dads car as he rents a car while I’m trying to get this thing to run so I have to do it myself so if anyone can help it would be sooo awesome. |
Just out of curiousity Evil Aviator, when you say you can't do it yourself, are you refering to tune or installation. I understand on the tune and I am going to have Brian Cain tune mine. But as far as install, besides basic eletrical and soldering skills, some good wiring diagrams, and some time, what else is there. I am not trying to be rude or anything, just wondering because I am getting ready to install mine tomorrow. I might be in better shape than most though because my Dad is an electronic technician and I have his tools and knowledge at my disposal.
|
A man from chruch told me that if i get the thing at least running he will get his racing team to tune mine so im not so worried about the tuning but how can i when im not sure about all the other things.
|
ok, what is your current condition? you have a stock '87 body, wiring harness kind of all over, but not cut, and you have an '89 engine in there right now, with all the wires cut on it? or is the harness from the '89 engine all good, just cut off at the previous ECU?
|
all the wires are cut on the engine they hang out around a foot in length maybe less.
|
the car harness is only cut where it meets the engine on the passenger side but I don’t think any wires come through the fire wall on the driver side at all.
I bought the car with the engine massacred |
I’m not sure what it looks like before you touch it because everything in the engine bay was demolished it looked like he took a drill to many parts trying to get miss threaded or broken bolts out.
|
Originally Posted by 85rx-7gsl-se
(Post 6924897)
Just out of curiousity Evil Aviator, when you say you can't do it yourself, are you refering to tune or installation.
Originally Posted by 85rx-7gsl-se
(Post 6924897)
I might be in better shape than most though because my Dad is an electronic technician and I have his tools and knowledge at my disposal.
Originally Posted by 85rx-7gsl-se
(Post 6924897)
I understand on the tune and I am going to have Brian Cain tune mine.
Originally Posted by 85rx-7gsl-se
(Post 6924897)
I am not trying to be rude or anything
Just to clarify, my EMS viewpoints are based on many years of reading and moderating this forum, and 19 years in the rotary engine community. When I respond to a post, I do so based on what I have experienced in the past, and apply it on a general basis. In this case, I have seen failure after failure on the part of average people who try to install and tune a standalone EMS on their own, with most of the problems occuring on the tuning portion. I do not intend to preach doom and gloom, but rather to clarify an issue that is muddied by EMS salesmen who do not offer full service. The next time a salesman says the installation and tuning is so easy, then ask him to come over to your house and do it for you for $20. I have a feeling that you will not get many takers, lol. |
''There are 2 sides of harness for an FC. Passenger side is for ECU
The driver side is for headlights power for ignition alternator etc.. The passenger side is where the MT should be installed I.E. injectors, CAS, also wiring up the ignition. The Passenger side Harness should not be touched.'' I found this on another form is this true? are all the wires comming out of the driver sid of my engine that are cut for my headlights and such? |
Do you think you can still return the LT10 for a refund? You are in WAY over your head on this project. I think you would be better off trying this project after you finish college and have the time and money that it will require. You can buy a running RX-7 for $1,000-$2,000. Sorry, I know that isn't what you want to hear.
|
Do NOT tamper with the wiring on the driver's side of the engine bay! They are important for your lighting, charging(if you have a TII), and ignition system. You only need to rip out the passenger side engine wiring harness and the ecu.
Learn where each and every wire that comes out of the MicroTech goes to, then mock it up, cut the wires to length, and solder on their respective connectors as per the MT manual. If you have any confusions about wiring, this forum has lots of resources and topics that have been covered. Take your time, measure twice, cut once, and triple check all your connections and wiring before attempting to fire up the engine. I recently installed an LT8-s on my T2 without any previous experience. How did I pull it off? Weeks upon weeks of studying: wiring diagrams of both the ecu and car/engine, and as well as how everything worked to control the engine. |
Originally Posted by MaczPayne
(Post 6925244)
How did I pull it off? Weeks upon weeks of studying: wiring diagrams of both the ecu and car/engine, and as well as how everything worked to control the engine.
|
I know its not what I want to hear but can you answer the questions for me or are they not making any sense I can find help but a little fore hand know how would help
I have always wanted to do something like this (rx7 engine swap) and I saved up $4000 to do it as my other car bit the dust. I found an 87 TurboII rx7 for $750 with a blown engine and rusted out exhaust with all kind of holes in it. I bought the JDM engine and transmission for $1100 dollars after shipping Before it arrived I bought the full beat racing exhaust down pipe and all for $880 after shipping. I was told that I should go ahead and get an aftermarket intake so I did $80 after shipping and $15 dollars after modified 3" inlet piping. After this I was told that I might want to get a fuel pump because you will need more fuel to the engine so I bought the wilburo 255 for $100 after shipping Also $16O for the two 800cc fuel injectors that someone also said I might need. But when it arrived it had a cut harness and it was the wrong year and was told that it would be easiest to just buy a Microtech ECU and wiring harness so it would work for both the wiring for the car and engine Then someone told me that if I’m planning to run more than 10 boost that I need a new intercooler and supposedly after the aftermarket exhaust and moded intake with aftermarket cone filter that it would naturally boost my turbo to 11-12psi so I bought $200 intercooler and $100 piping off eBay thus equaling around $3500 then another $1400 for Microtech Ecu hand controller and 4x ignition box now around $4900 dollars Obviously I spent over my savings making it a little hard to pay bills and a little stressful spending all my time in class or under the car (which is in a gravel lot by the way) or at work after all this work getting everything in and together the last thing left is the freaking wiring. After all this money and time spent would you give up and buy a $2000 working rx7 I like to learn and love to learn so please tell me what you know so I can learn and then learn from my mistakes because I’m sure I have already made many. So I know you know how please let me know. |
and thanks Evil Aviator and Mazpayne and everyone else all of this information has helped and all is a little scarry.
|
oh yeah i have not removed any of the wireing. i have not messed with any of the wires in the engine bay. My question was about the wiring acctually coming out of the engine on the driver side i will take pictures tommorow and post lots of pictures with these questions maybe that will make my questions a little easier to answer.
|
i also have an aftermarket blitz bov that came with the JDM engine because i think they accidentally broke the connector between the turbo and the stock intercooler
|
I don't know why you were told to get a FMIC, the top mount is perfectly able to handle the power you will be making, since your MT will be a rough base tune anyway. I'm a college student as well, and unfortunately it has taken me about a year and a half to get my T2 running, working on it during weekends only.
|
I think you should start taking what other people tell you with a grain of salt! Do you have the wiring diagram for the car? have you checked it out? and the wiring instructions (not sure how detailed they are) that came with the microtech? I've personally never wired a microtech, but I've dealt with a lot of wiring issues on various cars before. You need to determine what every single wire is on your engine, and where it would go on the stock ECU. label every single wire that's cut. Then, work on finding which Engine Control wires you will have to wire up into your Microtech. I understand that some of the car's systems must still be handled by the stock ECU, so seperate them. You have to take small steps instead of trying to do the whole thing as one.
|
I got the Microtech wired in. It starts and runs for about 5 seconds then dies. Hmm? Back to troubleshooting.
|
My Car
2 Attachment(s)
My Car
|
pictures about the questions i had before
5 Attachment(s)
pic of questions from before
|
All times are GMT -5. The time now is 05:07 PM. |
© 2024 MH Sub I, LLC dba Internet Brands