SOOOO, I may hold out on the UTEC engine management.....

[WRXtranceformed]

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Shiv at Vishnu just made an add-on to his XEDE engine management system that automatically tunes your car all the time as you drive it. Basically from what I'm getting out of it, it's going to eliminate the need for a custom tune. It will make adjustments to your engine based on atmospheric conditions, temperature, gas quality, etc. to eliminate the possibility of knocking and maximize horsepower constantly. Pretty unbelievable.

Right now it's available for the EVO, but he's making a version for the WRX/STI

[Ginger]

... and it works?

[WRXtranceformed]

Supposedly, and well.

[ScottyB]

wow....Vishnu tuning has produced quality products in the past. i'd let some people try it and post their opinions, then jump on it if it sounds good.

[damnit458]

... and it works?

Yeah Id go ahead and wait for some opinions. If it seems to good to be true.....

[mpg9999]

My ecu "self learns". Fuzzy logic! Not exactly the same as this....

[Nis01]

hmm... if it ends up working.. might have found myself a new toy. :lol: Nice find Lee.

[JackoliciousLegs]

I can't believe this is the first dynamic engine management system available. There's got to be another system that you just plug into a wideband and go... or maybe vishnu just revolutionized tuning.

[.RJ]

Electromotive TEC III could do this.. but its a fairly expensive standalone system. (not a bad way to spend $10,000 )

[KPWSerpiente]

Uh...yeah...Vishnu and revolutionized do not belong in the same paragraph.

It's not exactly a new concept.

-T

[WRXtranceformed]

Uh...yeah...Vishnu and revolutionized do not belong in the same paragraph.

It's not exactly a new concept.

-T

True, it is to the WRX though. The AccessPort allows the stock ECU to do what it normally does: adjust your car's performance based on external influences. This new system should be about 10xs better at doing this though, from what I'm reading, and should maintain optimized power and safety continuously.

[.RJ]

from what I'm reading, and should maintain optimized power and safety continuously.

How does it do this? Maintain a consistent a/f ratio? How does it handle load, heat soak, knock and detonation?

[WRXtranceformed]

I have absolutely no idea how it actually works, but yeah...here's what Shiv says about it:


Quote:
Originally Posted by value
Is it safe for me to say this will compensate for things like aftermarket intakes ect ??

Yes. It will also compensate for swings in fuel quality, ambient temps, barometric pressure, intake charge temps, swings in IC efficiency, load characteristics in different gears, etc,. It will basically bridge the gap between best case conditions and worse case conditions. No more having to tune conservatively for worst case scenario in order to acheive safe, knock-free performance in the real world!! With the new fuel and timing dynamics, the xede will constantly trim WOT fueling to hit the desired AFR targets while the Proactive knock control will allow for extra spark advance when knock noise is low (conditions are good) and less timing when knock noise is high (conditions are bad). It does this BEFORE actual knock occurs (hence the term "proactive") unlike the factory knock control system (which is still fully function..... just in case)

Shiv

All you have to do is drive in Dustin's car and what the active fuel and spark timing values. Compared to his previous "normal" map, this new map squelches the knock (and factory knock retard) that tends to occur upon upshifts (when load goes from min to max instantly) by pulling back up to 2 degrees of timing for a fraction of a second and then, when conditions are good, it even added up to 3-4 degrees of ignition advance (easily 15-20lb-ft of torque)). When we were REALLY beating on the car (getting it hot), the active timing trims would stay slightly to moderately negative, keeping the factory ECU from yanking out gobs of timing which would otherwise result in a very noticeable and annoying momentary loss of torque (as big as 20-30lb-ft for a span of 1500-2000rpm). After giving cruising for a bit and allowing everything to cool, we would be greeted with a slightly to moderately positive ignition timing trims (and the big power gains that come with them).

Similarly, in the higher gears and colder conditions where Air/Fuel ratio would go slightly leaner, the active fuel control would trim the fuel mapping upwards, keeping AFR at the desired levels. Consversely, in the lower gears and in warmer conditions, the trims would go slightly negative. This avoids the power loss that would occur when the AFR would go unreasonably lean under such conditions.

Oh yea, the XEDE also displays injector duty cycle now

Shiv