M50 vs M52 intake flow comparison

[Raybimmer]

Any dyno graph of 328i with M50 manifold ?
I agree with Sclass , the hooligan on my shoulder is shouting in my ear :thumbs:

 

[hiltonfa]

I have done this mod on my car, plus exhaust and filter. The drop in torque below 4000 rpm is noticable but it's not that bad, the rush from there on more than makes up for the small loss. I say go for it, you won't be sorry.:rollsmile:

 

[novio]

hey peeps.

made a post a little while ago bringing up the same topic.
I bought my 328 with the m50 manifold already installed....however, it was not remapped.

http://www.bmwfanatics.co.za/showthread.php?tid=20349&page=2
Sorry but the image is gone for some reason....so i linked the pic from my older post.

have a look at the remap improvement in the dyno pic attached.
I feel it is absolutely essential to have the remap done. Not only was there an increase in power but the car just feels a whole lot better and tighter. I also had the air/fuel tuning done at the same guys and as a result from all this tuning, my economy went from 8.9l/100k ( with stock wheels ) to 8.1l/100k ( with e90 17's and runflats )....mixed highway and town driving.
My rev limiter is now at 7k.

At 4000rpm+ its an absolute pleasure to feel the vanos kick in.

Freerider....how on earth are you generating 270nm of torque????
What am I missing? Tell me your secretraise:

Or could there be something wrong with mine that only generates 190nm even after the remap?

 

[zabbo]

This is mine after M50, chip and filter.

(this was surprisingly with a bit of an engine niggle)

 

[freerider]

I cant wait to see what your car does when its all sorted again Zabbo.

 

[zabbo]

Still waiting on pricing for bottom end before I decide whether or not to do the cams as well :rollsmile:

I think about 160wkw should be fine .. what you think?

 

[sclass]

Wouldn't simply changing the diff (3.38) and decatting give you the same urge without the loss of bottom end? Or is power delivery the main issue?

 

[moranor@axis]

a shorter ratio will keep the curve the same so it will still feel sluggish when you rev it compared to the lower revs, but it will have more torque all over so it will be faster...

a ratio change with the manifold will be a good combination because the ratio will boost the low end torque so under normal driving it will be the same (or better im not sure what % gain you will have) , but when you rev it then it will really shine :rollsmile:

 

[sclass]

Yah neh, that makes sense. It's just I've never driven a car that responsive low down, I have driven quicker turbo cars though but you always have to pay attention lest you get caught off-boost and the car just stands there!
This is all great info I must say, there seems to be plenty of potential in this car especially if M3 or 330i aren't immediate options. Over time I'd probably succumb to the temptation to swap to M50,but for now I'm just enjoying this...

 

[StK]

for some reason i stumbled upon this same thread the other day... i cant even remember what i was looking for, but i remember thinking why would they put such a rubbish manifold on the 328i...

It was done to restrict output and for emissions controls, same reason there's a baffle in the airbox.

I believe it was actually done due to German Insurance IIRC if a car was above 195bhp then the insurance shot up dramatically hence why they restricted the manifold.They also put the restricted manifold onto the 323 to reduce it to 170bhp if you fit the M50 manifold on that then you can get 192bhp out of a 323.You could with tuning get 140bhp+ out of a 328...not sure what these figures are in KW I am afraid

 

[freerider]

I'm looking for a 3.15LSD, much more than that and you gonna be sitting in the upper rev range in 5th at 120kph. No thanks. At that stage you need to start looking at a 6spd upgrade mated to an even higher ratio diff in my opinion.

 

[StK]

I'm looking for a 3.15LSD, much more than that and you gonna be sitting in the upper rev range in 5th at 120kph. No thanks. At that stage you need to start looking at a 6spd upgrade mated to an even higher ratio diff in my opinion.

3.15s are found on the 3l M3. 3.23 found on the M3 evo-if you get an evo one you need to swap out the rear axle cause the diff wont fit in the subframe.I am swapping out the rear axle on mine due to the fact that I picked one up with diff,barkes everything for £300.00 which is what a 3l LSD diff goes for on its own.The 3l diff is quite easy as all you need to do is swap the flanges over-well that was for a 325-I am not sure if you'll have prop issues fitting it to a 328.

 

[Peejay]

In one of my old Speed n Sound magazine there's a write up about fitting the manifold. The power gains was as much as a 3.0L m3. He also had the head ported and polished.

 

[moranor@axis]

FR with a 3.15 diff you will have a 7% gain i very much doubt you will loose 7% in the lower revs so it will be a win all round :rollsmile:

 

[hiltonfa]

hey peeps.

made a post a little while ago bringing up the same topic.
I bought my 328 with the m50 manifold already installed....however, it was not remapped.

http://www.bmwfanatics.co.za/showthread.php?tid=20349&page=2
Sorry but the image is gone for some reason....so i linked the pic from my older post.

have a look at the remap improvement in the dyno pic attached.
I feel it is absolutely essential to have the remap done. Not only was there an increase in power but the car just feels a whole lot better and tighter. I also had the air/fuel tuning done at the same guys and as a result from all this tuning, my economy went from 8.9l/100k ( with stock wheels ) to 8.1l/100k ( with e90 17's and runflats )....mixed highway and town driving.
My rev limiter is now at 7k.

At 4000rpm+ its an absolute pleasure to feel the vanos kick in.

Freerider....how on earth are you generating 270nm of torque????
What am I missing? Tell me your secretraise:

Or could there be something wrong with mine that only generates 190nm even after the remap?

The standard specs for the 328 are 142 Kw and 275Nm, there seems to be something not right with 190Nm you are getting.

 

[novio]

hey peeps.

made a post a little while ago bringing up the same topic.
I bought my 328 with the m50 manifold already installed....however, it was not remapped.

http://www.bmwfanatics.co.za/showthread.php?tid=20349&page=2
Sorry but the image is gone for some reason....so i linked the pic from my older post.

have a look at the remap improvement in the dyno pic attached.
I feel it is absolutely essential to have the remap done. Not only was there an increase in power but the car just feels a whole lot better and tighter. I also had the air/fuel tuning done at the same guys and as a result from all this tuning, my economy went from 8.9l/100k ( with stock wheels ) to 8.1l/100k ( with e90 17's and runflats )....mixed highway and town driving.
My rev limiter is now at 7k.

At 4000rpm+ its an absolute pleasure to feel the vanos kick in.

Freerider....how on earth are you generating 270nm of torque????
What am I missing? Tell me your secretraise:

Or could there be something wrong with mine that only generates 190nm even after the remap?

The standard specs for the 328 are 142 Kw and 275Nm, there seems to be something not right with 190Nm you are getting.

any idea what it could be?
torque is low but power being produced is considerably higher than stock. so i'm a little lost.

 

[SlowMo]

hey peeps.

made a post a little while ago bringing up the same topic.
I bought my 328 with the m50 manifold already installed....however, it was not remapped.

http://www.bmwfanatics.co.za/showthread.php?tid=20349&page=2
Sorry but the image is gone for some reason....so i linked the pic from my older post.

have a look at the remap improvement in the dyno pic attached.
I feel it is absolutely essential to have the remap done. Not only was there an increase in power but the car just feels a whole lot better and tighter. I also had the air/fuel tuning done at the same guys and as a result from all this tuning, my economy went from 8.9l/100k ( with stock wheels ) to 8.1l/100k ( with e90 17's and runflats )....mixed highway and town driving.
My rev limiter is now at 7k.

At 4000rpm+ its an absolute pleasure to feel the vanos kick in.

Freerider....how on earth are you generating 270nm of torque????
What am I missing? Tell me your secretraise:

Or could there be something wrong with mine that only generates 190nm even after the remap?

The standard specs for the 328 are 142 Kw and 275Nm, there seems to be something not right with 190Nm you are getting.

any idea what it could be?
torque is low but power being produced is considerably higher than stock. so i'm a little lost.

Fit the stock back box, you will get an increase in torque. The higher flowing box u have there will give u high rpm HP but will lose low end torque. Very nice for the track or street racing, not so nice for a daily drive needing low end torque.

Or just change ur driving style to be above 6K rpm all day :=):

 

[Sankekur]

Or just change ur driving style to be above 6K rpm all day :=):

I would choose this one

 

[freerider]

Or just change ur driving style to be above 6K rpm all day :=):

I would choose this one

AMEN!

 

[S///Mon]

I found a M50 inlet Mani for R1500 with all the bits and bobs to fit it.

Is that a decent price?