[rjahl]

I knew I had posted something that showed the Valve Lift "VL Dropped line" changing before the Torque Reduction Request from the Transmission.

I assume your tune did away with this.


http://www.e90post.com/forums/showth...1169885&page=3

[Bob@BPC]

Originally Posted by TheAxiom

Mods on that motor?

328i 6 speed, 3 stage intake, our tune, aa header and full exhaust.

All questions above, yes and we have tested this tune with the n54 & open runner intake with out any issues (soft limiter or valvetronic closing early)

[Taskmaster]

Originally Posted by Bob@BPC

328i 6 speed, 3 stage intake, our tune, aa header and full exhaust.

No intake? Geeze, that 240whp just doesn't hold a candle to those open/cut manifold! Thanks for testing out that DISA tweak btw, that was really awesome!

[Bimmer-Bob]

Originally Posted by Bob@BPC

328i 6 speed, 3 stage intake, our tune, aa header and full exhaust.

All questions above, yes and we have tested this tune with the n54 & open runner intake with out any issues (soft limiter or valvetronic closing early)

Same mods, same numbers more or less (239 whp). When you say "full exhaust," are you counting removal of secondary cats?

[Bob@BPC]

Originally Posted by Bimmer-Bob

Same mods, same numbers more or less (239 whp). When you say "full exhaust," are you counting removal of secondary cats?

Yep, headers, no cats and performance muffler

[Bimmer-Bob]

Originally Posted by Bob@BPC

Yep, headers, no cats and performance muffler

So, I have similar numbers with secondary cats still in place - so maybe not much left on the table there.

Of course, I also have a BMW Performance intake, so that could be making up for it (but I kind of doubt it's actually worth anything other than a little bit of underhood bling).

[hassmaschine]

good to see I'm not crazy. it looks like there is maybe more than one factor that is cutting back around the same time, although it made a pretty good difference.

I couldn't imagine going to the stock tune now. the stock soft limiter feels like it belongs on a Toyota Camry..

[Taskmaster]

Originally Posted by hassmaschine

good to see I'm not crazy. it looks like there is maybe more than one factor that is cutting back around the same time, although it made a pretty good difference.

I couldn't imagine going to the stock tune now. the stock soft limiter feels like it belongs on a Toyota Camry..

I just don't see how a full bolt on 3 stage car tops out at 240whp. I was already at 231 from a 3 stage, intake and tune. Either that dyno reads low, or my cars are rung out on the higher end of the scale.

But, the only other thing I plan on doing is a manifold swap of some sort.

[Bob@BPC]

Originally Posted by TheAxiom

I just don't see how a full bolt on 3 stage car tops out at 240whp. I was already at 231 from a 3 stage, intake and tune. Either that dyno reads low, or my cars are rung out on the higher end of the scale.

But, the only other thing I plan on doing is a manifold swap of some sort.

Most shops post STD numbers, they can read anywhere from 5 - 15hp higher. We post SAE

EDIT, some also turn down the smoothing so little bumps will beef up the peak numbers, we are not trying to trick anyone.

[Bob@BPC]

SAE VS STD is even worse on boosted cars..

M5 I just tuned... Picked up 20hp with a few clicks of the mouse

[Taskmaster]

Originally Posted by Bob@BPC

Most shops post STD numbers, they can read anywhere from 5 - 15hp higher. We post SAE

EDIT, some also turn down the smoothing so little bumps will beef up the peak numbers, we are not trying to trick anyone.

Oh, I know alllll about that Bob, I'm a huge on data. I love the numbers, I love the emperical evidence, so dynos have a huge draw for me.

Here are mine (old car)

Old car stock vs OE Tune first version (second version was better)



Tuned vs AFE stage 2 SI airbox:




Dinan intake snorkel with K&N filter, 3 stage manifold, OE tuning tune.
STD:



SAE:



That's on the old car -

the new car best baseline (stock with BMW performance exhaust) vs stock with K&N filter:

[Taskmaster]

Fyi Bob, this isn't a dyno battle, and I don't want you to take it as a sign of disrespect at all. I'm actually more curious than anything.

[Bob@BPC]

Originally Posted by TheAxiom

Fyi Bob, this isn't a dyno battle, and I don't want you to take it as a sign of disrespect at all. I'm actually more curious than anything.

Its ok, I understand, as part as my job I get this question A LOT lol. I just try not to look at the peak number, but more of the gains(stock vs XYZ) and using SAE correction seems to always have the most honest numbers displayed. sorry if i came off too strong, its been one of those days.

[Taskmaster]

Originally Posted by Bob@BPC

Its ok, I understand, as part as my job I get this question A LOT lol. I just try not to look at the peak number, but more of the gains(stock vs XYZ) and using SAE correction seems to always have the most honest numbers displayed. sorry if i came off too strong, its been one of those days.

lol, it's cool man - go to bed

[hassmaschine]

Bob,

When you were running the N52 with the open-trumpet intake (no throttle), what were you doing with the oil cyclone? is it just vented to atmosphere or something? catch can? trying to figure out what to do with mine..

[DigiDon]

Hey Bob, Just read all of this thread.... very interesting..

I think you are the man I need to talk to about a tune. Also very interested in the N54 intake swap and the MAF delete for my application. I disabled the air flow reading portion of my MAF but still have air intake temp portion enabled. How does the vehicle get air intake temp readings without MAF?

I believe what I am looking for is MAF delete, rear O2 sensors delete, Air ratio sensors remap, top speed limiter removed, 8000 rpm redline, map for 80lb injectors, using 100% E85.

The vehicle is running great at the moment, but running using an AEM piggy back doing everything with band-aids... Would like the majority of the tune to come from the DME and then use AEM for fine tuning under boost if possible.

I have a basic understanding of tuning and have tuned multiple turbo vehicles using standalones, but no where near the level of tuning understanding that you and other guys on here have when it comes to modifying stock DME's and making them work happily with piggy backs and boost. Stand alone on this vehicle is not an option... Need some help on this one.

What are your thoughts, and/or any ideas on my application...

[Bob@BPC]

Originally Posted by DigiDon

Hey Bob, Just read all of this thread.... very interesting..

I think you are the man I need to talk to about a tune. Also very interested in the N54 intake swap and the MAF delete for my application. I disabled the air flow reading portion of my MAF but still have air intake temp portion enabled. How does the vehicle get air intake temp readings without MAF?

I believe what I am looking for is MAF delete, rear O2 sensors delete, Air ratio sensors remap, top speed limiter removed, 8000 rpm redline, map for 80lb injectors, using 100% E85.

The vehicle is running great at the moment, but running using an AEM piggy back doing everything with band-aids... Would like the majority of the tune to come from the DME and then use AEM for fine tuning under boost if possible.

I have a basic understanding of tuning and have tuned multiple turbo vehicles using standalones, but no where near the level of tuning understanding that you and other guys on here have when it comes to modifying stock DME's and making them work happily with piggy backs and boost. Stand alone on this vehicle is not an option... Need some help on this one.

What are your thoughts, and/or any ideas on my application...

We can make it work, disable the MAF and use the factory MAP sensor and it will still use the air intake temp sensor. And as for the other items, I can do that as well. I think it would be cool to run the N54 short runner intake over the 3 stage on a boosted setup. We are thinking about doing this on our turbo setup as well. Im impressed with what you have done, im happy to see other people mod the forgotten bmw engine that got no aftermarket love like the n54 did.

[David0ff]

Man this N52 forum is finally going in the right direction !
Awesome to have a reputable creative shop so present and involved with the N52
Great to have you here Bob,

Also for the future, my intention is N54 mani or cut oem 3 stage, whichever yields more top end, 8000 RPM and your Aplha N tune + Headers.

FOr sure I will drive down to you guys from montreal for the tune.

[Bob@BPC]

Originally Posted by David0ff

Man this N52 forum is finally going in the right direction !
Awesome to have a reputable creative shop so present and involved with the N52
Great to have you here Bob,

Also for the future, my intention is N54 mani or cut oem 3 stage, whichever yields more top end, 8000 RPM and your Aplha N tune + Headers.

FOr sure I will drive down to you guys from montreal for the tune.

In order to hit 8k, you need to upgrade the lifters too, stock units can rev to 7700rpm with no issues

[David0ff]

Originally Posted by Bob@BPC

In order to hit 8k, you need to upgrade the lifters too, stock units can rev to 7700rpm with no issues

Then 7700 Rpm it is
Thx Bob

[hassmaschine]

Originally Posted by Bob@BPC

In order to hit 8k, you need to upgrade the lifters too, stock units can rev to 7700rpm with no issues

have you noticed the S55 uses the same parts? its redline is 7600rpm stock. Would BMW have such little margin leftover in the S motor?

in fact most of the valvetrain is the same except one of the rockers. I wanted to get one of them to see what the difference is.

[David0ff]

Also , would it be beneficial to have trumpets and individual filters like this win an Alpha N tune?

Maybe have these filters installed on the stock runners once cut to desired length?

Would it yield better results over an N54 Manifold + Alpha N tune?