[justpete]

Originally Posted by CobraMarty

I guess it depends on what you want. More duration, more lift, more duration and lift, more peak hp, or more power across the whole rpm range.

I would rather have 5-7 more hp across the whole rpm range than 10-12 more peak hp at 300 higher rpm than stock.

Usually increasing duration moves the power curve and peaks further up in the rpm range. And increase in hp at higher rpm is usually at the expense of tq at the lower rpm.

Exactly.

[Taskmaster]

The only reason there generally is a loss of power with increased duration is lack of cam phasing. Of courae, there is only so much that can be done when cams are keeping the valves open 2xx of rotation, but it helps.

[hassmaschine]

Originally Posted by CobraMarty

I guess it depends on what you want. More duration, more lift, more duration and lift, more peak hp, or more power across the whole rpm range.

I would rather have 5-7 more hp across the whole rpm range than 10-12 more peak hp at 300 higher rpm than stock.

Usually increasing duration moves the power curve and peaks further up in the rpm range. And increase in hp at higher rpm is usually at the expense of tq at the lower rpm.

On a fixed timing system - maybe (it depends a lot on the lsa). On a variable system, that isnt really true at all.

[justpete]

Originally Posted by hassmaschine

On a fixed timing system - maybe (it depends a lot on the lsa). On a variable system, that isnt really true at all.

Well, this is good news!

[200,000 club]

Ok I know I'm a bit late, any updates?

[desertman123]

Originally Posted by 200,000 club

Ok I know I'm a bit late, any updates?

https://BimmerMILVS.com/

[200,000 club]

350? Damn, I'll just find some old ones off a junk n52 and CNC them myself. Anyone got any measurements on stock vs milv?

[Blueeyesredpanda]

Originally Posted by 200,000 club

350? Damn, I'll just find some old ones off a junk n52 and CNC them myself. Anyone got any measurements on stock vs milv?

CNC them yourself? Damn, I'll just buy one and call it a day.

[Phyrexia]

Originally Posted by 200,000 club

350? Damn, I'll just find some old ones off a junk n52 and CNC them myself. Anyone got any measurements on stock vs milv?

yeah, the guy who spent months of his life to figure it out has them. he sells you the measurements, they come for free with a set of MILVS

[desertman123]

Originally Posted by 200,000 club

350? Damn, I'll just find some old ones off a junk n52 and CNC them myself. Anyone got any measurements on stock vs milv?

You think $350 is expensive for custom machined performance pieces for a BMW?

I'd expect someone who has the ability to run a CNC mill to appreciate the R&D that went into creating these.

[200,000 club]

Originally Posted by desertman123

You think $350 is expensive for custom machined performance pieces for a BMW?

I'd expect someone who has the ability to run a CNC mill to appreciate the R&D that went into creating these.

Idk, 350 is a fair price, but if you have access to a cnc machine, and understand G code, a basic coding language, it may be worth it to find your own measurements and do it yourself. I'm not trying to come off as snobby, and I'm not insulting anyone who has already figured this out, I'm just throwing ideas out there lol

[cheeseforlunch]

Originally Posted by 200,000 club

Idk, 350 is a fair price, but if you have access to a cnc machine, and understand G code, a basic coding language, it may be worth it to find your own measurements and do it yourself. I'm not trying to come off as snobby, and I'm not insulting anyone who has already figured this out, I'm just throwing ideas out there lol

Will xxx hours of your time spent measuring, coding, and developing be worth saving the $350? Not to mention, you'd have peace of mind that those (^) MILVs are tried, tested, and widely used...

[200,000 club]

Originally Posted by stellarbaboon

Will xxx hours of your time spent measuring, coding, and developing be worth saving the $350? Not to mention, you'd have peace of mind that those (^) MILVs are tried, tested, and widely used...

Maybe Santa will bring me some this month

[tlow98]

Originally Posted by 200,000 club

350? Damn, I'll just find some old ones off a junk n52 and CNC them myself. Anyone got any measurements on stock vs milv?

I hope the piston doesn’t encounter the valves with this arm chair engineering. Yikes.

[200,000 club]

Originally Posted by tlow98

I hope the piston doesn’t encounter the valves with this arm chair engineering. Yikes.

Lmao, do you know if milvs make a difference with a 2 stage intake manifold?

[tlow98]

Originally Posted by 200,000 club

Lmao, do you know if milvs make a difference with a 2 stage intake manifold?

Well, it likely would not be a compounded positive difference. It may be additive or subtractive in certain areas of the power band depending on resonances, etc..

power adders almost never act as 1+1=2. More like 1+1= 1.25 or 0.95 or 1 or...you the idea.

[200,000 club]

Originally Posted by tlow98

Well, it likely would not be a compounded positive difference. It may be additive or subtractive in certain areas of the power band depending on resonances, etc..

power adders almost never act as 1+1=2. More like 1+1= 1.25 or 0.95 or 1 or...you the idea.

Oh yea I totally understand, but I'm talking about with a tune, I know they can add up to 10-15 hp and torque on a 3IM setup, but i wanna know if it will differ on a 2IM

[tlow98]

Originally Posted by 200,000 club

Oh yea I totally understand, but I'm talking about with a tune, I know they can add up to 10-15 hp and torque on a 3IM setup, but i wanna know if it will differ on a 2IM

Likely, but I'm not sure I would bother considering the 3SIM is the single largest power adder with the apropos tune. Unless you were going for a N54 intake manifold that makes all the power up high in the rev range.

[200,000 club]

Originally Posted by tlow98

Likely, but I'm not sure I would bother considering the 3SIM is the single largest power adder with the apropos tune. Unless you were going for a N54 intake manifold that makes all the power up high in the rev range.

What kind of tune is best for the 3IM

[W37V]

Originally Posted by 200,000 club

What kind of tune is best for the 3IM

If you want to spend money, go with AA or Stage FP (formerly BPC). I tested both. Both are equally good, but Bob's tune does give slight more low end TQ and expandability for other addons, such as MILVs. However, AA's latest revision of the tune is really good, especially for the money. Bob's is about $650, while AA can be found on sale for about $400. There is also a free option from bimmerlabs. It flashes 330i tune on your 328.

My advice is: Unless you will be installing MILVs, go with AA.

http://stagefp.com/product/sfp-n51-n52-tune/

https://store.activeautowerke.com/co...-tune-software

[200,000 club]

Originally Posted by W37V

If you want to spend money, go with AA or Stage FP (formerly BPC). I tested both. Both are equally good, but Bob's tune does give slight more low end TQ and expandability for other addons, such as MILVs. However, AA's latest revision of the tune is really good, especially for the money. Bob's is about $650, while AA can be found on sale for about $400. There is also a free option from bimmerlabs. It flashes 330i tune on your 328.

My advice is: Unless you will be installing MILVs, go with AA.

http://stagefp.com/product/sfp-n51-n52-tune/

https://store.activeautowerke.com/co...-tune-software

Thanks, I follow bob on instagram, and I've contemplated his tune over anything else, cause of all the options, milvs, 3im, headers. I think his is probably the best, especially considering the fact that he has crazy experience with this engine

[Rmtt]

Originally Posted by 200,000 club

Thanks, I follow bob on instagram, and I've contemplated his tune over anything else, cause of all the options, milvs, 3im, headers. I think his is probably the best, especially considering the fact that he has crazy experience with this engine

I've been extremely happy with every tune I have got from Bob!