GTM

iTrader: (12)

Thanks for the reponse! So the Lvl I unit does not include a wideband controller correct? (or it does but its external?)

As far as the knock detection, how confident are you guys in it being able to advance timing to the most optimum threshold, especially in the higher RPMs, I just figure with so many different engines out there, especially the built engines, they are all going to sound a little different. Usually the OEM knock control is for safety and not optimum for peak performance.

Very interested in the development of this unit!

Thanks again,

-George
GT Motorsports

minus500

iTrader: (20)

Very valid point.

SoundPerformance

Here are just a few of the reasons why you should use this unit:




12 Injector drivers - All with built in Injector drivers!! Perfect for a twin injector setup on the Supra!!

16 Coil Drivers - Yes 16!!! No more waste spark!!

32 Analog inputs!!! - There are 32 analog inputs which will be preconfigured for anything you want to do... I.E. plug in a fuel pressure sensor and it automatically activates the trims associated with it. Put a Nitrous pressure sensor on your car and the computer trims fuel accordingly to bottle pressure!! You can datalog everything imaginable!!

10 Low side driver outputs - You can configure these to do whatever you can imagine. Also these will all support 4+ amps each!!

Built in wideband!! - That says it all!!

True volumetric efficeincy - So things like injector and pressure changes don’t have to be calculated and multiple maps changed, it’s all done in the background by simply entering your injector size and base fuel pressure. Actually knowing the injector size and fuel pressure, this allows us to make instantanious feedback changes to things like fuel pressure not staying constant, without relying on the O2 sensor for delayed information. Changing fuel type is as simple as entering the stoichiametric ratio for the fuel used.

Fault coding – Check engine light will tell you fault codes to help diagnose problems. Actions can be assigned with the fault codes. I.E. low oil pressure triggers a fault code, and activates a low rpm limiter. O2 sensor faults will automatically turn off block learning and closed loop feedback. Also the fault codes will be the same as the original ECU!!!

Traction control – multiple comprehensive traction control strategies including defined wheel speed differential between driven and non-driven wheels.

True knock sensing capability with specific knock frequency detection based upon the specific engine being monitored.

Multiple failsafe conditions making it nearly impossible to damage your engine in the case of tuning errors or mechanical malfunctions. I.E. lean, and knock conditions can be used to turn off nitrous, shut down boost etc….

O.E.M. manufactured ECU’s – The ECU’s are built by an O.E. manufacturer, so all ecu are 100% tested for vibration, temperature, loading etc… BEFORE you install them into your vehicle. Pro EFI ECU’s are as reliable as the factory units you take out. No more being stranded on the side of the road, or waiting weeks or months to get and issue repaired with the confidence of rolling the dice.

Drive by wire capability!!

Nitrous control:

Up to 4 stages!!

Control by speed, time, gear etc.....

Just enter the number of jets, jet size and target a/f and it does the rest!!

Add a nitrous bottle pressure sensor and it adjusts accordingly to pressure!!

Unlike other ECU's, you can target different a/fs for Nitrous with this unit in closed loop, or open loop, since the computer is based soley on V.E. it doesn't rely on the O2 sensor for hitting the desired a/f ratio. It does this based upon volumetric efficiency and desired equivelency ratio. Therefore there is less work for the O2 to do in closed loop, eliminating the chance for lean spikes typical of running nitrous!!!!

Fuel pressure compensation:

With the simple addition of a fuel pressure sensor, the computer will monitor and compensate for various fuel pressure. Lets say that you have a pump that is tired and your fuel pressure is not rising 1-1 any more. The computer will know and add neccessary fuel. Also if the pressure really gets unstable causing the computer to add too much pulse width, it will trigger a check engine light. It can also be set to initiate fuel cut, turn off the boost control, shut off NOS and lower the rev limiter. These safe guards can be triggered by the fuel pressure alone, by O2 activity or a number of other things!!

Boost Control Strategies:

Will be able to utilize dual solenoids to control pressure to both the top and bottom ports on any wastegate. This will give you VERY accurate control!!

Will be able to control boost by speed.

Will be able to control boost by time. Therefore if you spin the tires, and the vehicle speed sensor puts the boost map into a zone for higher boost.... the computer will know that it is wrong and hold the boost down until a certain amount of time.

Will control boost based on traction control. Traction control will be based on wheel speed differential!!

This computer will also know what gear you are in by simply entering gear ratios from the service manual, rear end ratio and tire size!!

Lean condition safety features:

In the case of a lean condition under certain circumstances (IE load, time etc) the computer can be programmed to shut down nitrous, lower boost, initiate fuel cut, initiate a rev limiter for a programmed duration of time until safe conditions return. This can also then be programmed to throw a code and activate the check engine light.

Misfire detection:

No more guessing if you have a misfire. This computer will tell you which cylinder and how often it misfires!! Think about how valuable this will be!! You will know instantly when it is time for new plugs.... or a coil pack is going bad....etc!!


20 channel thermocouple capability:

Yep..... 20 channel!! Put one in every runner..... downpipe..... anywhere you can think of!! This is critical in tuning an engine to run exactly the same on every cylinder!!!

Julian@MRC

iTrader: (28)

...Very interested..

SoundPerformance

I am 100% confident. This computer utilizes the latest knock detection strategies available (same as OEM). The key to this is two things. First it looks for a certain frequency on the sensor determined by your engine dimensions. Secondly and most importantly it looks for knock at the correct times. By this I mean there is only a very small window of opportunity for a cylinder to knock on its compression stroke. The computer monitors the sensor only during this time period and if knock is present it knows exactly which cylinder knocked and will retard that cylinder. By utilizing these strategies the computer can filter out what is knock and what is loose piston noise, open wastegate noise etc.

Hope this helps!!

Julian@MRC

iTrader: (28)

Very true, good info Larry..

IIQuickSilverII

iTrader: (13)

WOW... thats bad ***....sounds better than the hks knock amp that uses the stock sensor(unless i am mistaken), which itself is really good anyways since nissan uses it for over thousands of production cars no problem...pro efi should be more high end OEM like detection.

BabyZiLLa

iTrader: (7)

This is great.. Finally where getting some real competition in the EMS market for the VQ.

At the end of the day, its not the equipment its the tuner.. But giving your tuner all the tools he can possibly need is definately a big help..

The guage is slick too. I like it alot. I actually think the multi function guage is what will stear me towards this over the Haltech.

GTM

iTrader: (12)

That sounds really good, I am still curious has to how the ProEFI will determine what is true knock apart phantom knock, and other associated engine noises like piston slap, as you mentioned.

Also this will have the ability to determine which cylinder is knock, and retard only that cylinder? That is an awesome feature! How does it know which cylinder is knocking?

Since a knock sensor is basically just a microphone, it is hard for me to accept the fact that a ECU will be able to determine knock so precisely as to be able to run maximum timing for best torque. This is why high end OEMs are now using ION Sensing to do what you are describing (i.e. BMW M5) since a simple knock sensor is not accurate enough.

As far as the A/F feedback, I noticed that it will have a failsafe incase there is a sensor code or fault that will disable the learning and closed loop. That is awesome BTW, but what happens if a sensor is mis calibrated by the end user, or if a sensor becomes miscalibrated over time, and there are no fault codes, then wouldn't the ECU be tuning a A/F off of a false reading?

If this ECU can do all it suppose to reliabily its truly going to be awesome!


P.S. These are genuine questions and do not want them to be interpreted as anything else, I know it is hard to tell someones tone via the internet, hence this msg.

-George
GT Motorsports

warmmilk

iTrader: (5)

can u guys post a pic of the ecu itself. i know is not important to the way it functions or what it can do, but i'm just curious as to what it looks like

accordfreak

iTrader: (15)

wow! are all these features in the stage 1????????? I really like the safety features!

Silver03z

Would be interested in a g/z meet in the midwest. Where would you think you would have it? Keep us up dated.

eagletanggreen

iTrader: (40)

Can this ecu control Meth like the fcon??

IIQuickSilverII

iTrader: (13)

more cool info from supra forums





The Dimension for the Pro128 is 9.5 x 7.5 x 1.25. The Pro48 is 5.75 x 6 x .5 inches, very small, yet very powerful. One is lv2 and other lv 1

BabyZiLLa

iTrader: (7)

This thing sounds too good to be true.. With so many features i just hope they nail it and don't get caught up in quantitiy over quality.

Ahsmo

iTrader: (13)

Before I knew anything about tuning(still dont know anything) and what not I always assumed the EMS adjusted the fuel and timing map based on real time information(closed loop)...not a predetermined map. This system looks great!

eagletanggreen

iTrader: (40)

Man no kidding!

Fcon's are going to be up for sale more often in the classifieds

1ZweetZ

He already stated that it looks at a specific frequency. This means it knows what knock 'Sounds' like. Piston slap, valvetrain knows...etc.. have a different frequency than does knock.

As for the O2 sensor question, I remember reading that it monitors the response of the o2 sensor, and this determines whether or not the o2 is working properly, if the response time slowes or stops, then the fault is triggered turning off the adaptive learning and feedback control. Ofcouse setting the CEL as well.

taurran

iTrader: (18)

It seems to me that all three of the current standalone EMS's made specifically for the 350z are about the same price when all is said and done, so it's strictly a question of features and peformance.

Pardon my if I missed somehting, but have there been pictures of the user interface for the tuning software utilized by the Pro EFI? I'm interested in seeing how it stacks up to the Haltech software, as it looks awesomely robust.

IIQuickSilverII

iTrader: (13)

^^ Remember this selfs tunes based on VE...its not like other ems
Some info regarding your question already posted in supra forums