dude, i hope this stuff is ready by the socal dyno day

 

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

 

I'm getting a chubby.

 

That is great work!
Now, we need to see some proof.

 

Totally amazing Shiv ! Can't wait to try it !

 

post before and after dyno sheets!

 

wow, sounds interesting!

 

now i can get that super awsome intake ive been reading about on the "other" forum... lol.

 

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

 

do we have to send you our XEDEs to add this new feature ?

 

Excellent Shiv, congrats man! Guess I am going to have to add one of those Xede's to my Visa soon!!!

 

Nope. You could even upload the map i posted up and run with it. All you need to do is feed a 0-5v output from wideband 02 sensor into Pin 9 of the Silver XEDE connector. This will provide you with the AFR signal necessary to run the active fuel control function.

For the active ignition control function, you will need to tap a wire into the knock signal wire (pink wire/Pin 4 in Black XEDE connector) and feed it into Pin 10 on the Grey XEDE connector. The the middle of the wire goes a little knock signal buffer circuitry that we made. This steps up the current of the teeny tiny raw knock sensor signal so that we can feed it into the XEDE without degrading it. We are in the process of making a bunch of these add-on buffer devices so hold off for now.

Also, the active fuel control only works if the wideband 02 sensor is calibrated just like the one we are currently using. If it is not, the desired AFRs will not be hit. Needless to say, we are in the process of settling upon a wide band unit so that all of us can play on the same field.

So maybe it's not a good idea to use the file I posted just yet

Cheers,
shiv

 

shiv,

any chance of having all the extra hardware needed to use this feature made available when you come to socal?

if so, please put me down for it

 

Great news Shiv....
Congrats on the breakthrough...
What is the max injector duty cycle on Dustin's car?
I assume he is still running the stock injectors

 

this sounds amazing... this is exactly what I have been waiting for. If you could please set up some kind of package deal that we can purchase everything needed from you (like O2 sensor, mis. wires, and a short write up of how everything needs to be installed) it would help so much for the tunning impared (me )