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      09-20-2012, 03:22 PM   #23
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2011 BMW 1M  [4.25]
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Originally Posted by Aussie_in_London View Post
Drop a quick email to Alex and he will sort you out.
info@alpha-n.de

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      09-20-2012, 03:23 PM   #24
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Originally Posted by Aussie_in_London View Post
Drop a quick email to Alex and he will sort you out.
info@alpha-n.de
Thank you
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      09-20-2012, 04:06 PM   #25
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are you going to center your exhaust tips? looks a bit off
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      07-26-2013, 10:50 PM   #26
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Must say I am unimpressed with this diffuser. Now have to take to bodyshop to get properly fitted.
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      07-30-2013, 08:52 PM   #27
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Anyone else had issues with the AlphaN diffuser fitment?. It has been installed twice by different installers, last of which is a highly regarded body shop. Both claim that the diffuser cannot fit the bumper due to the curvature.
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      08-01-2013, 03:12 AM   #28
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Send back mate and request a refund, mine lined straight up, took all of 15min to remove oem and fit the alpha-n diffuser and we had no troubles with so something has gone wrong with the one you have during the manufacturing process.
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      08-01-2013, 07:03 AM   #29
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Quote:
Originally Posted by Aussie_in_London View Post
Send back mate and request a refund, mine lined straight up, took all of 15min to remove oem and fit the alpha-n diffuser and we had no troubles with so something has gone wrong with the one you have during the manufacturing process.
They won't take it back. They say all diffusers are identical because they are pre-cut from a template and made in an autoclave. They say that the 3 installer I have taken it to have done it incorrectly

It fits better now, but not 100%... for that price it should be perfect
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      08-02-2013, 06:07 AM   #30
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I had the same issue with mine.

You need to remove the rear bumper to install the diffuser with perfect fitment.
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      08-02-2013, 06:09 AM   #31
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Quote:
Originally Posted by Alex.br View Post
I had the same issue with mine.

You need to remove the rear bumper to install the diffuser with perfect fitment.
I did remove the rear bumper on the 2nd install attempt at a pro body shop specialising in BMW. It is better, but not perfect.

I will never buy another Alpha-N product
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      08-02-2013, 07:09 AM   #32
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Quote:
Originally Posted by Ian///M View Post
I did remove the rear bumper on the 2nd install attempt at a pro body shop specialising in BMW. It is better, but not perfect.

I will never buy another Alpha-N product
That sucks! A little off topic....do you know anyone with the slek diffuser? Is the fitment pretty good on that?
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      08-02-2013, 07:59 AM   #33
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Quote:
Originally Posted by OrangeCrush View Post
That sucks! A little off topic....do you know anyone with the slek diffuser? Is the fitment pretty good on that?
HPA and others sell Slek so it must be ok. What I have learnt from this experience is don't buy direct from a manufacturer who lacks customer service and support.... no major player re-sells Alpha-N.... obviously for a reason.
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      08-02-2013, 09:08 AM   #34
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I've got a revosport diffuser and have installed Vorstiner and others and I can tell you that no composit body part is going to fit perfect with the exception of BMW performance parts, they are close to perfect.
I would not hesitate to buy from Alpha N, there parts are Tits.
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      08-02-2013, 01:24 PM   #35
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Im about to install mode carbon
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      08-02-2013, 03:09 PM   #36
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Quote:
Originally Posted by Acetech View Post
I've got a revosport diffuser and have installed Vorstiner and others and I can tell you that no composit body part is going to fit perfect with the exception of BMW performance parts, they are close to perfect.
I would not hesitate to buy from Alpha N, there parts are Tits.
Do you have any of their parts? Well there are basic 101's to making a mould...i.e. make sure it is the correct shape to the part it is matching up to...fail here by Alpha-N for the diffuser as can clearly be seen in the photos as it does NOT match the bumper contour. That is just a fact! No matter how much pushing & shoving it simply does not fit 100%. You can tell from their promo photos that all conveniently taken from flattering angles.

I wish BMW made a CF diffuser and a performance exhaust for the 1M, but I'm afraid that BMW has long forgotten the 1M wunderkind which it created.
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      08-02-2013, 03:48 PM   #37
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Quote:
Originally Posted by Ian///M View Post
HPA and others sell Slek so it must be ok. What I have learnt from this experience is don't buy direct from a manufacturer who lacks customer service and support.... no major player re-sells Alpha-N.... obviously for a reason.
Quote:
Originally Posted by Ian///M View Post
Do you have any of their parts? Well there are basic 101's to making a mould...i.e. make sure it is the correct shape to the part it is matching up to...fail here by Alpha-N for the diffuser as can clearly be seen in the photos as it does NOT match the bumper contour. That is just a fact! No matter how much pushing & shoving it simply does not fit 100%. You can tell from their promo photos that all conveniently taken from flattering angles.

I wish BMW made a CF diffuser and a performance exhaust for the 1M, but I'm afraid that BMW has long forgotten the 1M wunderkind which it created.
I think the key is customer service and communication. Previous threads was made about how poor they can be.

Unfortunately, I think your problem is not the mould, but on the laying. Claiming they all come from the same mould is just an excuse and BS as they know very well, how you lay the fabric in the mould makes a bit difference in the outcome.

I haven't been really interested in non-functional CF parts (bar the Akra exhaust tips ), but that's why I still haven't bite the bullet on any functional body parts as the companies who knows what they are doing aren't really interested in the 1M.

If I am buying something off the shelf at the moment I would consider Revozport because of their TUV certification, but there is still no guarantee that it will be perfect. My mechanic put the revozport on another 1M and he said their workmanship is faultless. However, another BMW Club member's feedback is that the fitment is not perfect.

Even BMW CF parts are not perfect - numerous report that the laying is poor and crack develops and even reported that BMW was saying it is the "nature of the product" on some problems.
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      08-02-2013, 06:06 PM   #38
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Quote:
Originally Posted by sparoz View Post
..............
Even BMW CF parts are not perfect - numerous report that the laying is poor and crack develops and even reported that BMW was saying it is the "nature of the product" on some problems.
Yeh sure, that's why they use it on all later model M coupes roofs. I wouldn't want hear that if I just bought a new M6,
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      08-02-2013, 06:57 PM   #39
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Quote:
Originally Posted by sparoz View Post
I think the key is customer service and communication. Previous threads was made about how poor they can be.

Unfortunately, I think your problem is not the mould, but on the laying. Claiming they all come from the same mould is just an excuse and BS as they know very well, how you lay the fabric in the mould makes a bit difference in the outcome.

I haven't been really interested in non-functional CF parts (bar the Akra exhaust tips ), but that's why I still haven't bite the bullet on any functional body parts as the companies who knows what they are doing aren't really interested in the 1M.

If I am buying something off the shelf at the moment I would consider Revozport because of their TUV certification, but there is still no guarantee that it will be perfect. My mechanic put the revozport on another 1M and he said their workmanship is faultless. However, another BMW Club member's feedback is that the fitment is not perfect.

Even BMW CF parts are not perfect - numerous report that the laying is poor and crack develops and even reported that BMW was saying it is the "nature of the product" on some problems.
Why bother with CF... plastic for a diffuser is fine IMO... the weight difference is how much I had for lunch. I'd rather just have a good plastic copy of the OEM part that covers the muffler.

Never heard of issues with BMW CF parts ???
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      08-03-2013, 03:41 AM   #40
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Quote:
Originally Posted by Alpine*
Quote:
Originally Posted by sparoz View Post
..............
Even BMW CF parts are not perfect - numerous report that the laying is poor and crack develops and even reported that BMW was saying it is the "nature of the product" on some problems.
Yeh sure, that's why they use it on all later model M coupes roofs. I wouldn't want hear that if I just bought a new M6,
To clarify it's the BMW Performance CF Products and there are reports that the CF wasn't lay straight and also reports of the wing cracks easily. I am not talking about roofs etc which is done to a completely different standard.
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      08-03-2013, 03:44 AM   #41
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Quote:
Originally Posted by Ian///M
Quote:
Originally Posted by sparoz View Post
I think the key is customer service and communication. Previous threads was made about how poor they can be.

Unfortunately, I think your problem is not the mould, but on the laying. Claiming they all come from the same mould is just an excuse and BS as they know very well, how you lay the fabric in the mould makes a bit difference in the outcome.

I haven't been really interested in non-functional CF parts (bar the Akra exhaust tips ), but that's why I still haven't bite the bullet on any functional body parts as the companies who knows what they are doing aren't really interested in the 1M.

If I am buying something off the shelf at the moment I would consider Revozport because of their TUV certification, but there is still no guarantee that it will be perfect. My mechanic put the revozport on another 1M and he said their workmanship is faultless. However, another BMW Club member's feedback is that the fitment is not perfect.

Even BMW CF parts are not perfect - numerous report that the laying is poor and crack develops and even reported that BMW was saying it is the "nature of the product" on some problems.
Why bother with CF... plastic for a diffuser is fine IMO... the weight difference is how much I had for lunch. I'd rather just have a good plastic copy of the OEM part that covers the muffler.

Never heard of issues with BMW CF parts ???
You are the one with the CF rear diffuser. I am only interested in CF functional parts which will take this OT
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      08-03-2013, 05:51 AM   #42
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CF air box?
if they made a plastic diffuer I'd rather take it than PIOS CF
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      08-03-2013, 07:41 AM   #43
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Quote:
Originally Posted by sparoz View Post
I think the key is customer service and communication. Previous threads was made about how poor they can be.

Unfortunately, I think your problem is not the mould, but on the laying. Claiming they all come from the same mould is just an excuse and BS as they know very well, how you lay the fabric in the mould makes a bit difference in the outcome.

I haven't been really interested in non-functional CF parts (bar the Akra exhaust tips ), but that's why I still haven't bite the bullet on any functional body parts as the companies who knows what they are doing aren't really interested in the 1M.

If I am buying something off the shelf at the moment I would consider Revozport because of their TUV certification, but there is still no guarantee that it will be perfect. My mechanic put the revozport on another 1M and he said their workmanship is faultless. However, another BMW Club member's feedback is that the fitment is not perfect.

Even BMW CF parts are not perfect - numerous report that the laying is poor and crack develops and even reported that BMW was saying it is the "nature of the product" on some problems.
CF roof would only weaken a 1M
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      08-03-2013, 07:55 AM   #44
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Quote:
Originally Posted by Ian///M
CF air box?
if they made a plastic diffuer I'd rather take it than PIOS CF
If there was a plastic one with the same size I would have bought that
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