No7Yet

Guys,

I've been talking with Microtech about developing a version specifically for the N/A RX-7. Currently, N/As are equipped with ECUs which have a 20 psi MAP sensor. They run awesome, but it's my opinion that if I could get a 1 Bar MAP sensor in there, and all the load points under 2 psi, and actually get some real fuel accuracy down there, we could see some significant gains... think AFM removal + S-AFC tuning on crack + real ignition tuning ability for less than the cost of an S-AFC and an MSD setup.

But...

There's got to be the interest necessary to develop such a system... We're (BR7 Racing) going to be announcing pricing for another group buy Real Soon Now, and could probably have such a map developed and tested in time for release, but it would take some doing. This would also probably mean that you'd have to send your ECU back to us (we're in Florida) if you ever wanted to go turbo (you'd have to have it refitted with a 20 psi MAP sensor).

So... how about it guys?

Brandon
BR7 Racing

RarestRX

Yo,


I'd be interested! Any rough idea on price?

Kevin
1989 GTUs "No MAF = The Goodness."

No7Yet

Well, I'm not supposed to say anything right now, but it's looking like it'll be in the neighborhood of $675 retail (lower for the GB). That's a really really rough number, so don't take it to heart. That's the ECU, harness, manual, fuel pump relay, and fuse, with a Microtech-quality base map installed (check the MT section of this forum for testimonials ).

Brandon
BR7 Racing

silverrotor

iTrader: (1)

Brandon, talk about amazing timing. I just PM you In this regards.

No7Yet

Oops! I just checked some prices, and MAN has the S-AFC come down! (I guess I've been spending too much time in speed-density land) I'll have to amend my previous post and say "For a comparable cost to an S-AFC and an MSD setup".

Just wanted to clarify.

Brandon
BR7 Racing

GTRay

brandon's qoute of 675 is a very good qoute, however, prices on the units WILL be lower than that for the upcoming GB... shipping still has to be calculated but rest assured, this GB will be a GREAT one!

as for the NA application you can't beat the microtech especially with the features we are hoping to develope for the system!

Ray
BR7 Racing

Evil Aviator

Are you sure that the LT doesn't have a load scaling function? The Wolf EMS has basically the same MAP sensor as the LT, but you can rescale the load bands to better match the boost level of the engine.

The S-AFC doesn't exactly have stellar resolution, and despite its shiny new case, the horribly outdated stock EMS is still running the engine. No thanks.

No7Yet

It sure does. The hope is that with the 1 bar MAP that costs might come down a slight bit, however.

The important bit is moving the load points down below/to atmo, and tuning the ignition to suit the N/A platform.

BTW, I feel the same way you do about the S-AFC.

Brandon
BR7 Racing

No7Yet

So what do you all think, guys? Is the price okay? Would you be interested in an N/A-oriented standalone?

Talk to me, guys (and gals)!

Brandon
BR7 Racing

silverrotor

iTrader: (1)

wankelhead

hey brandon
would this be something you guys can load in florida?or ship it back to down under?unfortunately,i am out of state now,and did not get a chanche to install my MT from the last group buy.i did manage to do a baseline dyno.i guess it would be real interesting to see some results with the current maps vs. what your proposing.i'm all about beeing a test subject,but it will be another month or 2 before i get mine installed,and it sounds like your gonna try and get this pushed through before that.
i say go for it,thou!
david

No7Yet

We'll have the ability to modify Microtechs ourselves very soon, so no shipping back to Aus!

Brandon
BR7 Racing

RarestRX

Yo,


I'm a little confused, isn't Microtech from Australia or something?

I'm down with a stand alone since you'll be paying almost that much for the S-AFC and other junk.

My biggest thing is to get rid of the tiny 2" MAF that's choking the motor. Putting on a huge Mustang hotwire MAF or getting rid of it all together would be huge.

Kevin
1989 GTUs "Mo' Bettah Powah."

SonicRaT

iTrader: (6)

What map sensors are you using? (brand/part #?) And what features are we talking about here? So basically we just rip off our harness, slap this one on, put the box in, and we're set?

Samps

For under $700, I'm in! I would imagine this system still needs to be tuned; so any estimates on how hard the tuning will be? Will any Joe with a dyno be able to tune it? Or will Joe need to be familiar with rotaries? What type of software will we need; and will it be included? Any particular hardware we might need to connect to our laptops? This system will in fact eliminate our stock EMS right? Will any particular mods we have done effect your base tuning?

GTRay

the Microtech LT series have 2 map sensor options at the moment and we are working on a third. currently the options are for a Microtech factory installed internal 2bar map sensor or an external, remotely mounted 3 bar (GM) map sensor. We are working to have units developed that will feature a 1bar map sensor for the NA crowd with all of the load points set at or below atmospheric manifold pressures. the system will allow for turbo conversion later on but the unit will need to be reconfigured at a nominal charge.

this system is a standalone system. you will need to remove the drivers side wiring harness and factory computer. you will need to run the supplied wiring harness through the firewall and wire into the coils, intake air temp, collant temp sensor, TPS, run a vacuum line for the internal map sensor and wire into the CAS. this system is a speed density system that will allow for the COMPLETE REMOVAL of the very restrictive factory MAF.

In conjunction with an aftermarket TBI system this EFI combination could GREATLY improve the power output of the NA series 4/5 6port motors!

Ray
BR7 Racing

No7Yet

Yep, the MT comes from Down Under. We're the first dealer in the US to be "official" (not just buying through an Aussie retailer), so in a short time we'll have access to the equipment and software necessary for modifying the ECUs. For example, if you wanted to upgrade from a 2-bar to a 3-bar MAP, you'd have to ship it to Aus. Well, once we get set up, that'll not be the case!

The LT8 is a speed-density system, which means complete AFM elimination.

Brandon
BR7 Racing

SonicRaT

iTrader: (6)

Interesting... I'm just kind of wondering what's so costly about the map sensors you're using, and why they couldn't be switched with another. Is there limited control of the voltage specifications of the board it runs? I'm just wondering as the MPXA4250A internal 2 bar map sensor isn't too costly, so I don't really see much benefit from running a 1 bar. Also, what kind of control do we have over ignition?

GTRay

Yes, the system will still need to be tuned! The tuning will not be very difficult for an experienced engine tuner. The base maps are already sufficient for driving to the dyno and some limited street tuning. Any joe familiar with most aftermarket efi systems will feel right at home with the Microtech systems, you don't NEED a laptop.

Microtech offers a variety of solutions for your tuning needs. Assuming you already have a laptop then the most affordable solution is to purchase the software to run on your laptop. The other options are a little more pricey but if you don't already have a laptop then they are quite a deal. we offer a 4 line hand controler unit that retails for $125 and you can completely tune your car with that unit. We also offer a dash unit that is capable tuning every programable parameter of the computer. However, we don't reccomend tuning your car for maximum performance with the dash unit simply because of the time investment. Dyno time isn't cheap and the quicker work gets done the less it hurts your pocket. The Dash unit is great for last minute tuning and map adjustments. It is suited more towards displaying realtime operating conditions and making the driver aware of them. The Dash unit can be a permanent installation on the dash or hidden away in a glovebox. Retail price for the Dash unit is 290.

YES, this is a speed density package that eliminates your factory ems (including the MAF!!!). The mods that you have done to your car already are taken into consideration when you place your order and a base map is taylored to your application to get the car rolling. It will need tuning work on the dyno so be prepared to spend a few hours on dyno time.

Ray
BR7 Racing

No7Yet

Well, the MAP sensor is sort of a minor issue - but if we can knock 20 bucks off the cost by using a 1bar MAP, why not? The big time investment is getting such an LT8 running on an N/A car, and generating an appropriate map to use as a base. Oh, and convincing Microtech that it's worth their time.

As for timing control, you've got a base timing curve over RPM, and then you apply either a TPS or MAP correction to that, in addition to an air temp and water temp correction. You've also got a trailing split function over RPM, which is adjustable from 0-15 degrees.

Brandon
BR7 Racing

SonicRaT

iTrader: (6)

Ahh, that's the part that confused me, the 2bar I mentioned was only $16. Anyway, I'm going to be looking for something to control my '87 sport, and I'm not sure if I want to build another megasquirt for it, since it doesn't have any ignition support (can't beat a $150 fuel computer though) So ontop of the price for the harness/manual/ECU, we're going to have to purchase the software to configure it as well?

No7Yet

Well, when you buy the "laptop adapter", you're buying a serial port adapter which allows you to connect the computer to the ECU as well as a CD copy of the software itself. If your tuner is familiar with the Microtech, he should have his own copy and his own dongle. If not, it's only $100 retail (cheaper with the GB). If you'd rather use something along the same vein as the PowerFC Commander, for example, it's not much more ($125 retail).

Brandon
BR7 Racing

SonicRaT

iTrader: (6)

Cool, got any sites with some more specific information about the ECU?

No7Yet

We're working on a site right now, but for the time being, try

http://www.microtechefi.com and
http://www.team140.net/modules.php?n...rticle&artid=5

Brandon
BR7 Racing

Rxmfn7

iTrader: (4)

Id be interested.