[OpenFlash]

Hi guys,
We finally finished porting over v4 to the n55. This is not a "entry level" tune. I don't know what that is. Kinda like an "entry level" jockstrap. You either know how to protect your goods and you do so. Or you don't and cross your fingers.

So all the usual goods are functional: Timing control, Autotuning, Command Center, wastegate compensation, full diagnostics, code reading/clearing, in-dash gauges for boost/meth/afr, etc,.

A few things we've learned about the n55:

1) On pump gas, expect 340-350whp/370-380lbt-ft TUNE ONLY at 14-15psi peak. This is in line with tune only n54 engines. But unlike the n54, don't expect there to be another 100whp waiting to burst out with full mods and race gas/meth. The turbo won't support it by the looks of it. Judging by wastegate DC logs, I'd guess that the most we'd see after adding full mods and race gas is in the 380-390whp range. But i'd love to be wrong

2) A 340whp n55 with 7DCT feels about as fast as a 380whp n55 with 6AT/MT. The engine is always in the right gear and doesn't lose an ounce of steam between gears. Truly exceptional. Shifting manually results in zero throttle closure and aboslutely no loss of boost between gears. The only time you see a boost drop/throttle closure is when you let the transmissions shift itself at 7000rpm (see log below)

3) The new n55 DME has completely different knock control logic than the n54 DME. Namely, you can actually get the engine to knock audibly if you just raise boost and don't retard timing through the tune. So sloppy boost-only tuning will not work. And when the engine knocks, you can certainly hear it! So play with boost controllers at your own risk.

4) The n55 is more responsive than the n54, all things equal. Especially in the midrange where it will easily light up the tires in a 2nd gear roll on. Pretty amazing. There is less turbo so the reduction in lag is understandable. But the smoothness of the engine during these boost transitions is incredible. There really is something to Valvetronic.

5) Unlike other Valvetronic engines, there is a throttle body. But unlike in conventional engines, it works very differently. Don't be surprised to see the throttle blade fully open at idle once your car warms up. Pretty neat seeing it work the way it does to reduce pump loss/improve VE during different driving conditions. During the tuning process, I displayed CAN throttle blade angle on my oil temp gauge just to learn how the throttle blade worked in a traditionally throttle-bladeless Valvetronic engine.

6) The MAF sensor is different. Not only does it Frequency based, it also reads inverse. So low airflow reads high freq and high airflow reads low freq. The MAF plays a big role in the engine tuning. Lot bigger than I initially expected.

7) The ignition timing tables are different. In general, the n55 runs 2-3 degrees less ignition advance than the n55. I'd guess that most of that has to do with the better cylinder filling the Valvetronic engine provides.



More info to be posted early next week. This includes some tasty dyno results, pricing and availability.

Cheers
shiv

[kplsoleil]

That was fast! Update yesterday and finished today Looking forward to autotuning and command center the most. Command center will also use the cruise control stalk on the F10?

When will something be available to buy? Will it install differently than procede n54 unit?

[mercury]

Very exciting, thanks for the updates Shiv. Sign me up as interested :-)

[OpenFlash]

BTW, here's one of the earlier dyno graphs from a couple weeks ago before we had control of the throttle blade:


Stock vs Stock with Procede. 91oct. No other mods.

Since then, we've made some major improvements (full throttle blade control, improved PID logic, better ignition mapping, etc,.) Basically to the point where we feel it is ready for customers.

Going back to the dyno this week for some final numbers. Should be even better

Cheers
shiv

[OpenFlash]

Originally Posted by kplsoleil

That was fast! Update yesterday and finished today Looking forward to autotuning and command center the most. Command center will also use the cruise control stalk on the F10?

When will something be available to buy? Will it install differently than procede n54 unit?

The whole job was relatively easy since we designed the Procede to be adaptable to different platforms. Which is why we didn't have to do any hardware re-design. The biggest task was just getting all the CAN data inputs since the new n55 DME is pretty different from the n54 DME that we have gotten very familiar with. After that, it was just tuning and testing which is actually the easy/fun part. It just takes some time and a lot of gasoline for that part

And yes, you will use the cruise control stalk for the Command Center and mapswitching. Just like the 135/335 guys.

Cheers,
shiv

[Robin_NL]

Thanks!

So 340whp is >390 crankshaft hp more or less?

[X5 M50i '21]

Why are companies able to tune the engine but not the suspension?

[shockin330i]

Tune suspension?

[X5 M50i '21]

Originally Posted by shockin330i

Tune suspension?

Well, isn't it mostly software based in the f10 anyway? Isn't that what the ECU upgrade does to the Engine - modify the software.

[shockin330i]

There are already suspensions out there that do this. Bilstein or however you spell it is one of them.

[ICALL]

Have you had time to work on a tune for the 550?

[Whteverjklasdf]

has the new PROcede actually been INSTALLED on a new 535 for testing?

[FusionBlitzz]

Originally Posted by Sealobo

has the new PROcede actually been INSTALLED on a new 535 for testing?

same question

[newowner35i]

Seeing n54 failures because of tuning, I ask u why would u do it if it breaks ur engine

[Robin_NL]

Any progress already, Shiv?

[Dino Naclerio]

I am confused, I have a 2011 535i, N55 motor and I have attempted to purchase the tune from Vishnu listed here, but was told that it is not available. Please advise whether this tune is available for the 535i N55 motor or not?

[O.S.]

I was told by guys at vishnu that the tune should be released sometime in june.
For what its worth...

Originally Posted by Dino Naclerio

I am confused, I have a 2011 535i, N55 motor and I have attempted to purchase the tune from Vishnu listed here, but was told that it is not available. Please advise whether this tune is available for the 535i N55 motor or not?

[Dino Naclerio]

OK thank you, I just don't like that on their website they represent having a tune completed and available for sale, when in reality they do not.

[Bart@AUTOcouture]

Bump. What's up Shiv?

[Tuesday]

Originally Posted by Bart@AUTOcouture

Bump. What's up Shiv?

+1

[Alan l.]

Damn got happy for a sec...

[s2kdagjd]

Originally Posted by ICALL

Have you had time to work on a tune for the 550?

bump for 550i update~