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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > +1mm Modified Intake Lift Valvetronic Supports- 'MILVs' N52



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      02-07-2018, 09:37 PM   #551
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Aaaaand.... I can't install the tune. Huge disappointment. My BPC Genius tool keeps giving me an error code saying that protocol is not compatible.
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      02-07-2018, 11:57 PM   #552
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Has it been tuned before?
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      02-08-2018, 05:57 AM   #553
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Quote:
Originally Posted by W37V View Post
Aaaaand.... I can't install the tune. Huge disappointment. My BPC Genius tool keeps giving me an error code saying that protocol is not compatible.
I went through the same. In my case I had a BPC 3IM tune before a minor accident. After the accident I installed MILVs and headers, and then attempted to install a new BPC tune for MILV’s/Headers/3IM and kept getting the “incompatible protocol” message.

Turned out that after the accident the bodyshop I used had flashed my ecu back to stock and erased the first BPC tune. They did this to code a new headlight module they installed.

Did something happen between when you first emailed your stock tune and installing the new tune BPC sent you for MILV’s?
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      02-08-2018, 06:59 AM   #554
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Originally Posted by hassmaschine View Post
Has it been tuned before?
It’s currently running on BPC tune. The last time I used it was to flash the tune on the car. Nothing changed. I get the error regardless if the device is powered by usb or by obd port. I can’t even update the device. Computer software just stops working after a while.
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      02-08-2018, 07:07 AM   #555
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Quote:
Originally Posted by Biginboca View Post
I went through the same. In my case I had a BPC 3IM tune before a minor accident. After the accident I installed MILVs and headers, and then attempted to install a new BPC tune for MILV’s/Headers/3IM and kept getting the “incompatible protocol” message.

Turned out that after the accident the bodyshop I used had flashed my ecu back to stock and erased the first BPC tune. They did this to code a new headlight module they installed.

Did something happen between when you first emailed your stock tune and installing the new tune BPC sent you for MILV’s?
Highly doubt it’s car related. It might be corrupted software on the device, cuz first thing the app did upon launch was run the update. Last time I used it was to flash the car. No changes to the car software were done since. When I try to update the tool, the update process just hangs and never completes.

Last edited by W37V; 02-09-2018 at 12:43 PM.
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      02-09-2018, 12:51 PM   #556
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Device was fixed thanks to Bob and tune has been applied to the car.

The issue was - the software got corrupted during the update. The resolution was to remove app from the computer, install it again (flash drive) and update the app and the handheld device. This time around, the update process completed and the issue went away. Afterwards I was able to apply the tune to the car without any issue.

Review of milvs coming up in few days after the car adapts to the tune.
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      02-09-2018, 09:08 PM   #557
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I hate most updates.

Glad it all worked out. Look forward to your review.
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      02-12-2018, 05:09 PM   #558
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Quote:
Originally Posted by CobraMarty View Post
I hate most updates.

Glad it all worked out. Look forward to your review.
+1 Awaiting the review! Catless headers and MILVS are the final frontier for my car for performance upgrades.
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      02-23-2018, 11:26 PM   #559
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A PM conversation-
Quote:
Hi Marty,
Following the milvs threads since day 1. Have a question on machining accuracy of the mod. Not searching by any means what exactly do you do to the stock part, just curious if you measure several units at the point you machine them, what kind of variation are you getting in thousands of an inch?
Thanks
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My machinist is OCD anal. I say that in the highest complimenting respectful way.

Every single piece is measured.
They are all machined exactly the same.

Part of the accuracy is BMW themselves. The pieces are 'die cast' of quality metal. Every piece is exactly the same from BMW. Zero tolerance difference. All 10+ million that I estimate that they have made.

My machinist tolerances are less than 0.001", less than a thousandth of an inch.

Interesting is that the 'used' supports that I give him to machine are slightly 'harder' than the new parts. He has to set the mill slightly different for the 'used' parts.

The machining is very different than machining aluminum.
In my machinist words 'you have to have been doing this a long time to know the details in how to machine the part correctly and accurately'.

And to think that I thought I would buy a $2000 home mill and machine them myself. Thank goodness I found my machinist.
I would not make the MILVs available without him.

5 areas are machined and the oil 'groove' has to be machined.

I hope that helps,

Marty
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      02-24-2018, 06:06 PM   #560
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Lemme know how to get a set of MILVs.

Won't get to install them for a few months and I'll need to order the add-on tune for them from BPC but it'll be worth the wait, I think.

At least it'll provide dyno info for the following config

PI w/CAI and scoops
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      02-24-2018, 06:28 PM   #561
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Quote:
Originally Posted by justpete View Post
Lemme know how to get a set of MILVs.
Here you go-

http://www.e90post.com/forums/showthread.php?t=1436970
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      02-24-2018, 06:36 PM   #562
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Quote:
Originally Posted by CobraMarty View Post
Done, thanks.
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      03-02-2018, 08:25 AM   #563
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Mine arrived this week-thanks CM for your research and making this a reality.

VC gasket just removed and was not a jolly swell time.

Went fine, no blunders but PITA. Gasket and hardware expected Monday.
Have to have MILVS installed by then. Really excited. Full recipe BPC tune, soon.
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      03-08-2018, 11:46 AM   #564
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For the people DIY tuning these, have you adjusted anything in the VE table? For the N55 we have one table listing rpm and you plug in a VE value. Stock is 93 across the board i think. Wondering if anyone has tested changing this table with MILVs.
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      03-08-2018, 12:36 PM   #565
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There's no VE table on the N52 - well, there sort of is, but not really in the traditional sense. It's basically airflow over valve lift vs crankshaft position.

You need to alter the valvetronic maps of course, and maybe tweak the AFR target maps. I usually extend the airflow table mentioned above because by default it ends at 9.6mm of lift, but it's pretty linear so you can just scale that up to 11mm.

The N55 probably uses VE because the MAP sensor is a much larger part of the engine control, where on the N52 it's assumed to be 100kpa most of the time and is more of a sanity check.
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      03-08-2018, 02:12 PM   #566
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Quote:
Originally Posted by hassmaschine View Post
There's no VE table on the N52 - well, there sort of is, but not really in the traditional sense. It's basically airflow over valve lift vs crankshaft position.

You need to alter the valvetronic maps of course, and maybe tweak the AFR target maps. I usually extend the airflow table mentioned above because by default it ends at 9.6mm of lift, but it's pretty linear so you can just scale that up to 11mm.

The N55 probably uses VE because the MAP sensor is a much larger part of the engine control, where on the N52 it's assumed to be 100kpa most of the time and is more of a sanity check.
I was about to tag you and Bob@BPC But yeah.
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      03-08-2018, 03:51 PM   #567
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Thank, only reason I ask is I don't think the currently available N55 table is the only one needed to be adjusted. Haven't found the angle vs valve lift table as seen with the N52. So wanted to look into other available tables that might need changing.

Currently I'm at the same boost and fuel consumption after milvs and the one table change.
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      03-08-2018, 04:04 PM   #568
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Quote:
Originally Posted by weehe126 View Post
Thank, only reason I ask is I don't think the currently available N55 table is the only one needed to be adjusted. Haven't found the angle vs valve lift table as seen with the N52. So wanted to look into other available tables that might need changing.

Currently I'm at the same boost and fuel consumption after milvs and the one table change.
To be fair, I don't expect most tuners to just give out the information.
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      03-08-2018, 05:33 PM   #569
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Quote:
Originally Posted by TheAxiom View Post
To be fair, I don't expect most tuners to just give out the information.
I agree, I mean that's how they make money. Figured I'd ask if any of the self tuners had any input.
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      03-08-2018, 08:25 PM   #570
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IDK either.
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      03-09-2018, 02:01 AM   #571
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Quote:
Originally Posted by weehe126 View Post
Thank, only reason I ask is I don't think the currently available N55 table is the only one needed to be adjusted. Haven't found the angle vs valve lift table as seen with the N52. So wanted to look into other available tables that might need changing.

Currently I'm at the same boost and fuel consumption after milvs and the one table change.
Havent looked ar the N55 much yet, mostly because i cant flash it (without physical access anyway).

It is different from the MSx70 and MSx80 DMEs, but presumably the basic functions of valvetronic are similar. I think we have a Damos somewhere, I'll take a look.
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      03-09-2018, 11:15 AM   #572
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Unfortunately I'm pretty sure the table names are different between the N52 and N55. I have a document in german that lists all the functional table names and none of them match the N52 table names I've seen.
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