Aaron I maybe mistaken when it comes to the O2 sensor I know for the most part people do not run them because of the lack of a cat. I hear what you are saying about the ecu being out of date. What do you meen when you say the car will run like crap. Will the it idle bad or will it jerk back and forth when I am cruising down the highway? Have not heard those complaints around here. Does not mean that your not right though. I wonder if I can live with it or if it is just garbage. Let me know what you mean exactly what you mean when you say it runs like crap. I do not want to rewire my car for microtech and then it runs like crap on the road.

Hey,
I live like 20 minutes from Kilos shop and dealt with him a few years ago. He knows his stuff. That being said I have always worked on my own rx7s because of what you mentioned about local shops not be trustworthy. I've heard and seen of shops ripping people off all the time. I have had two FCs and now have an FD. I'm running a Power FC and with the right injectors it is much better for the street. It took me a long time but I have my car running pretty much perfect from a drive ability standpoint. I don't have emissions or IAC and my car has zero hesitations, starts perfect at any temperature and I run 15 AFRs cruising around. I think I get better MPGs in my FD than in my Evo X that is almost bone stock.

Plus the PFC is plug and play. Just change you are temp sensor to a fast reacting one and your map sensor if you plan on pushing more than 15-16 PSI and your good. The PFC does have its limitations, which is why I purchased an Adaptronic. But the car is running so good that I still haven't bothered to switch ECUs yet. Also, you can control boost with PFC.

Next time you are in the area, I'll give you a ride in my car and you can see how well a PFC can work.

idle will be fine . on the microtech if you want it to cruise on the hw on high afrs the car will run rough , only way to make it run smooth will be on the richer side

I am not a mechanic but I do some of my own mechanic work on my fd. I have learned that if you want it done right sometimes you have to do it yourself. I am trying to learn more and not be so intimadated by my fd. Most cars I just go for it and well the forums and youtube make me a scary mechanic.LOL!!!!!! Anyways when it comes to ECU my knowledge is very low. I understand that the ECU job mainly is to control fuel delivery and spark. I am sure I left some other things like fan speed and air intake but here we go. I dont know what AFRS is or loads. For what I am understanding the Microtech will waist more gas than other ECUs correct me if I am wrong.

If this is the only problem I can live with that for sure. I own a rotary so if I wanted fuel economy I would have a motorcycle. Already have one so lets go ROTARY! My rotary will not be my daily driver but yet just a passion,hobby that I want to enjoy to drive. I for now will have to just trust my mechanic on the tunning. It is hard to trust people in my area but here we go again. I dont think I will be taken for a ride again. I have own rotaries since 1992 in this area and I have been taken for a few bad rides. I almost gave up on my rx7 but I have seen a lot of persons on this forum run reliable fds and I can not give up hope on mine. Worst comes to worst I will sell boh ECUs and buy something else. My car will run well even if I have to travel out of this state to get it right.

JMM By the way I would love to take you up on that ride in your fd. I live very near you. Anyways I will be getting with you at sometime to see your car. I love rotaries especially those that are well kept and run well.

No problem. PM me or just stop by my shop.

Yimmy's Body Shop

Well I see for the track it should be good I wonder if anyone that runs it on their fd street car could tell me how a microtech is working for them. Track roadcourse still have not heard from anyone. I have heard some comments from a few tuners and I thank them for their input. If you are running microtech on a roadcourse or a street car give me some input on how your car is running.

stick with PFC

RX781 Why PFC? Have you ran both microtech and PFC in your car on the track or on the street? My mechanic tunes Microtech and that is why I am leaning this way but he usually runs drag cars and some street cars. I wanted some input on anyone who has ran microtechs on a roadcourse or street. I just wanted to make sure that I am not making a mistake. It is a lt10 with I believe microtech coils but dont quote me on that. I also heard that PFC are not very good on cars running over 400hp. I will not be running that much power but dont want to limit the car for the future.

If anyone else has some information I would I appreciate it or point me in the right direction. With so many FD owners and some using microtech on the street there has to be somebody in this large community that runs or did run a microtech for a track car, street car or a car that does both.

i have a track only FD with an lt10s microtech.

run e85, no idle control, turn the key, cranks twice and starts and just idles perfectly. no throttle input needed.

Its a great ecu and does everything i need it to at the track.

if you have a good microtech tuner, doesnt matter if he is a drag racer or a street car guy, the tune up will work fine.

car has run an x4 box with bosch coils, and now has no x4 box with LS1 truck coils.

Unknown user finally someone from down under where I know these ECU s are popular. Question are you drag racing or are you taking your car on the roadcourse. Many drag race with this ECU with great results but what about roadcourses. You know on and off the throttle situations. Low rpms high rpms. Drag racing is usaully high rpm. Roadcourse you may have to accelerate out of a corner at low rpm. This is where I am not sure about this ECU and why I started this thread.

https://www.rx7club.com/build-thread...d-rx7-1033758/

this is my car, videos of circuit racing it are in there.

i drag race it too.

Most people with Microtechs don't run an O2 sensor because there is nothing that the antiquated Microtech can actually do with an O2 reading but display and (poorly) datalog it. People with other ECUs that are modern absolutely do run O2 sensors, typically widebands, for multiple reasons. For example, modern ECUs allow FULL closed loop AFR control over the entire load table to tightly maintain an appropriate AFR regardless of conditions. They also support autotune which makes it a hell of a lot easier for a single person to tune a car. Additionally things like engine protection if the AFR starts to drift.

A Microtech isn't cable of any of this. The most important of the above features are closed loop.

I thought I was clear: Because the Microtech offers poor resolution and interpolation, the car at light loads must be tuned richer than it should be to maintain smooth operation. So you're wasting fuel, stinking up the air, dropping efficiency. Also the on/off decel on the Microtech doesn't have any smoothing. Zero idle control so the idle must be higher and richer than a proper ECU allows.

Oh and the timing control on a Microtech sucks. There's no other way to describe it. A virtual distributor...yeah, take something as limiting as a dizzy and then simulate it in software. Bloody brilliant (sarcasm).

Buy a Haltech P1000 with a plug and play FD harness then. Done and done. A well known supported configuration with a great ECU, large amount of forum support and a solid track record.

In this day an age, the ECU does far more than just control fuel and spark.

You are absolutely correct.

The Microtech is a fine ECU if you intend to use it on the track only. It is only on the street where its deficiencies quickly show.

I remind you I've been tuning Microtechs (as well as many other ECUs....Haltech, MegaSquirt, Wolf) for over 10 years.

Thanks for your input just having a hard time with making a choice. My mechanic really for some reason loves it. He says that the microtech was designed for rotary engines in mind. Man I am so torn between what the information that I am gathering. I do know that this mechanic is very well respected in the rotary world and has many rotaries on the track that run very well I will be researching in my area how well they run on the street. I have not heard any complaints about his work so this makes it hard for me to decide. I do take your information as valueble though.

Me personally, if there was no one in town that tunes haltech, get everything ready and trailer the car to someone who does. Aaron knows his stuff, and I enjoy every time he posts as I learn something new from someone who has "been there done that 1000's of times". I am going haltech on my build. But to each his/her own I suppose.

the microtech was originally designed around the rotary engine, that still doesn't mean much about its deficiencies. microtech works fine, rough but fine. it's just that most of us feel they are either too small a company or too lazy to make an ECU that is up to date, even their current line of ECUs are roughly 10 years old. find any other standalone manufacturer that thought it would be a good idea to let their products stagnate for a decade without any performance enhancements/evolution.

The company is fine and has more than enough resources to develop a new ecu, Dominic is lazy as shit though. If you want an ecu that had rotaries in mind, you can't go past adaptronic. Andy has an mx5 with a 13brew in it and his products are top notch. I have fitted a few and had a good play with them and I consider them best bang for buck ecu available. Personally given a choice for all ecus available, an autronic sm4 is at the top of my list. Working at an authorised dealer for autronic products probably does make me biased though. My fd3s is fitted with a microtech and I hate it. Absolute pig of an ecu. When I change, I won't even bother selling it. I will be getting more satisfaction out of tying it to the back of my car and driving for 4hrs straight with my car running a decent product.

lol, i hear ya. their laziness is going to put them out of business, even drag racers will eventually want more than the turd in a box that they're still selling(15+ year old tech) like it's still fresh and new. too many other companies with assloads more options for a few bucks more out there. even their newest release unit the LT10c is a joke, i'd be willing to experiment with the adaptronic versus buying another microtech even though i have never touched an adaptronic yet.

Trying to keep this thread alive in the hopes that someone in the rotary community has actually tried running this ecu on the track and the street.

Neye you are more than welcome to swing by and take a ride in my street FD(ac/ps) making 400 whp on pump gas with a Microtech. You can then make the decision yourself. Wise man once told me the arrow is only as good as the indian. (or something like that ) :lol:

Neyo, we also have multiple cars that run SCCA events and others that take their cars to Sebring and Road Atlanta with no issues. All microtech.

Nice!

My fd has a microtech in it I drive it everyday! But adaptronic is the only ecu I would consider for plug and play application. The microtech works but its not the best. The ecu is as good as the tuner...IMO