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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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      03-22-2017, 10:30 AM   #133
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yeah, there are just some details to work out on our end.

Be patient guys - this platform has been around for 11 years, a couple weeks or so won't kill ya.

PS, Terra, I'm still planning on meeting somebody for a dyno test - he had some mechanical issues with his car he needed to sort out first though.

As far as CobraMarty's mod, the car I've been working with has been basically grounded due to snow.. so I don't have anything new to report. I think I just want to confirm that the maximum eccentric shaft angle is indeed ~175 degrees, but I think what he's come up with so far is just about right.
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      03-22-2017, 11:17 AM   #134
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Quote:
Originally Posted by hassmaschine View Post
yeah, there are just some details to work out on our end.

Be patient guys - this platform has been around for 11 years, a couple weeks or so won't kill ya.

PS, Terra, I'm still planning on meeting somebody for a dyno test - he had some mechanical issues with his car he needed to sort out first though.

As far as CobraMarty's mod, the car I've been working with has been basically grounded due to snow.. so I don't have anything new to report. I think I just want to confirm that the maximum eccentric shaft angle is indeed ~175 degrees, but I think what he's come up with so far is just about right.
If you can confirm that, would this current batch be effective enough for our (my) needs.
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      03-23-2017, 04:55 PM   #135
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The modified support will not have any influence on the eccentric shaft angle.
Whatever your maximum ECC angle is before the modified supports are added will be the same after the modified supports are installed.

Version 1 has one area modified for increase lift.

Version 3- now at the machinists has version 1 mod + version 2 mods which is 2 more areas modified for even more lift.
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      03-23-2017, 05:05 PM   #136
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The modified support will not have any influence on the eccentric shaft angle.
Whatever your maximum ECC angle is before the modified supports are added will be the same after the modified supports are installed.

Version 1 has one area modified for increase lift.

Version 3- now at the machinists has version 1 mod + version 2 mods which is 2 more areas modified for even more lift.
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      03-23-2017, 05:28 PM   #137
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Quote:
Originally Posted by CobraMarty View Post
The modified support will not have any influence on the eccentric shaft angle.
Whatever your maximum ECC angle is before the modified supports are added will be the same after the modified supports are installed.

Version 1 has one area modified for increase lift.

Version 3- now at the machinists has version 1 mod + version 2 mods which is 2 more areas modified for even more lift.
right, I just mean the assumption currently is that the current maximum eccentric shaft position is actually 175 degrees, not 180 degrees (as it is in software). So basically, commanded 180 degrees = 175 at the sensor, which is the same as ~10.6mm of lift. I was saying, if this is indeed true - then my earlier comments are moot.

Although, I'd like to see what it does with version 3.. if only my engine actually leaked oil, I'd have an excuse to get these popped in there already.
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      03-23-2017, 06:14 PM   #138
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Quote:
Originally Posted by hassmaschine View Post
right, I just mean the assumption currently is that the current maximum eccentric shaft position is actually 175 degrees, not 180 degrees (as it is in software). So basically, commanded 180 degrees = 175 at the sensor, which is the same as ~10.6mm of lift. I was saying, if this is indeed true - then my earlier comments are moot.

Although, I'd like to see what it does with version 3.. if only my engine actually leaked oil, I'd have an excuse to get these popped in there already.
Speaking of, how much lift were you actually seeing with the current version? The full 10.6?

Still, I would need you to modify my maps, so I can't do anything until after you.
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      03-23-2017, 07:41 PM   #139
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Quote:
Originally Posted by TheAxiom View Post
Speaking of, how much lift were you actually seeing with the current version? The full 10.6?

Still, I would need you to modify my maps, so I can't do anything until after you.
Can't measure it directly, but we were seeing 173 degrees with some tweaks to the tolerances - so I'd guess about 10.3-10.4mm. I believe i can safely attain 174 degrees.
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      03-25-2017, 06:57 AM   #140
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Whatever the lift is with the stock hardware, the modified supports will add about 0.5-0.635mm of lift from ECC position of 140* to max 170-175*.

The support mod does not allow for additional ECC position.
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      03-25-2017, 09:14 AM   #141
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Yes, the changes I'm talking about are in software.
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      03-30-2017, 10:41 PM   #142
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I'm a bit late to the party.... got any left?
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      04-06-2017, 09:40 AM   #143
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OK picked up 3 sets from the machinist.
1-New and 2-Used sets. All 3 sets with BOTH types of mods done.

Instead of pushing the limit with one mod, I have 2 different mods done to the part. Both mods on their own will increase valve lift. Together increase lift more.

I am leaving shortly to go to Moab UT for 'Easter Jeep Safari' and wont be home until the 18th. Then I can get them packaged to ship.
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      05-01-2017, 06:46 PM   #144
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Heard today that BPC tried a set of 'Stage 1' Supports and found +5hp across the board.
IDK if that was with stock tuning or with added tuning.
Dyno graphs to follow.

I sent them a set of 'Stage 2' with an additional 0.4-0.5mm lift to try.

Not too bad as +5HP in these engines is hard to come by.
Would like to see these on a N55 engine too.
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      05-01-2017, 08:06 PM   #145
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Quote:
Originally Posted by CobraMarty View Post
Heard today that BPC tried a set of 'Stage 1' Supports and found +5hp across the board.
IDK if that was with stock tuning or with added tuning.
Dyno graphs to follow.

I sent them a set of 'Stage 2' with an additional 0.4-0.5mm lift to try.

Not too bad as +5HP in these engines is hard to come by.
Would like to see these on a N55 engine too.
Damn man, that's awesome! Can't wait to hear more about results.
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      05-02-2017, 10:54 AM   #146
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Quote:
Originally Posted by CobraMarty View Post
Heard today that BPC tried a set of 'Stage 1' Supports and found +5hp across the board.
IDK if that was with stock tuning or with added tuning.
Dyno graphs to follow.

I sent them a set of 'Stage 2' with an additional 0.4-0.5mm lift to try.

Not too bad as +5HP in these engines is hard to come by.
Would like to see these on a N55 engine too.
Still working on the tune, more power might be on the table, flashing the car now
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      05-02-2017, 11:17 AM   #147
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Quote:
Originally Posted by Bob@BPC View Post
Still working on the tune, more power might be on the table, flashing the car now
Oh man, I can't wait. So, the gain was with without any tune?

On separate note:
How is the idle with this mod?
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      05-02-2017, 11:44 AM   #148
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Quote:
Originally Posted by W37V View Post
Oh man, I can't wait. So, the gain was with without any tune?

On separate note:
How is the idle with this mod?
no, the tune needs to be adjusted. We did a before and after install and did not see any power gains, however, with adjustments might be looking at 10hp to the wheels
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      05-02-2017, 11:53 AM   #149
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Quote:
Originally Posted by Bob@BPC View Post
no, the tune needs to be adjusted. We did a before and after install and did not see any power gains, however, with adjustments might be looking at 10hp to the wheels
That is great. What kind of adjustments? 10hp is significant
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      05-02-2017, 11:56 AM   #150
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Quote:
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That is great. What kind of adjustments? 10hp is significant
Adjustments to the valvtronic maps, now I need to make a minor adjustment to the fuel maps. Also it idles just fine
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      05-02-2017, 12:53 PM   #151
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Quote:
Originally Posted by Bob@BPC View Post
Adjustments to the valvtronic maps, now I need to make a minor adjustment to the fuel maps. Also it idles just fine
I am dying to find out more.

Esp. how different 'stages' are yielding. If the car is streetable (idle is not too erratic), I wouldn't mind getting this installed on mine.


CobraMarty I admire your experimentation.
Bob@BPC Thank you for taking on this little project and testing it.
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      05-02-2017, 03:01 PM   #152
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Quote:
Originally Posted by Bob@BPC View Post
Adjustments to the valvtronic maps, now I need to make a minor adjustment to the fuel maps. Also it idles just fine
Does the valvetronic adjustment yield 10hp increase to the base n52 intake and upgrade to 3IM or just the latter?
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      05-02-2017, 03:38 PM   #153
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So, here are the final results of the valvetronic lift mod, *first revision*.

2006 Manual 330i N52 with 3 stage intake
Mods:
BMW performance intake
BMW performance Exhaust
BPC Tune

Red: Before tune adjustment after installing the mod
Blue: Tune adjustments to only the valvetronic maps
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      05-02-2017, 03:46 PM   #154
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