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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Jun-07-2018, 02:45:44 PM   #31
BMWjunkie11
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

Do you have any pics of the streamline one? I'd be curious to see what the fitment on them looks like. I know there are some people that really go to bat for those guys but I'm seeing more and more guys lately who are not satisfied with their products.
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Old Thu, Jun-07-2018, 04:19:09 PM   #32
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

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Originally Posted by BMWjunkie11 View Post
Do you have any pics of the streamline one? I'd be curious to see what the fitment on them looks like. I know there are some people that really go to bat for those guys but I'm seeing more and more guys lately who are not satisfied with their products.
There was at the start of the streamline hype on the forum. Now its mostly lots of fitment issues, and sh1t customer service stories.
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Old Thu, Jun-07-2018, 05:22:02 PM   #33
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

Not totally surprised this bumper doesn't fit. I lost faith in Streamline when they decided to re-engineer the trumpets for their airbox. Sorry, no guy in his garage is going to out engineer BMW's design using basic tools with no way to test anything.
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Old Thu, Jun-07-2018, 06:06:05 PM   #34
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

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Originally Posted by ///M Dream View Post
There was at the start of the streamline hype on the forum. Now its mostly lots of fitment issues, and sh1t customer service stories.
That's what I mean, seems like more and more guys are just saying the fitment is garbage and customer service just dismisses or puts the burden on the customer. I'm just curious how their bumper fit in comparison to others.
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Old Thu, Jun-07-2018, 06:12:30 PM   #35
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

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Originally Posted by BMWjunkie11 View Post
That's what I mean, seems like more and more guys are just saying the fitment is garbage and customer service just dismisses or puts the burden on the customer. I'm just curious how their bumper fit in comparison to others.
I think the issue is that they "guarantee oe fitment" for a fraction of the price. So the hype went through the roof because of that. People buy ebay carbon fiber and Status Gruppe carbon fiber and no one bats an eye when it fits 9/10 (or even 6-7/10 in some cases) but that's because they never advertised it as such.
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Old Thu, Jun-07-2018, 06:36:22 PM   #36
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

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Originally Posted by silvergray545 View Post
Not totally surprised this bumper doesn't fit. I lost faith in Streamline when they decided to re-engineer the trumpets for their airbox. Sorry, no guy in his garage is going to out engineer BMW's design using basic tools with no way to test anything.
You're giving BMW way too much credit. The CSL box was designed back in like 2001. Take it from a hydraulics engineer, CFD simulation wasn't very good, user friendly or wide spread back then. It's pretty unlikely they even did any significant amount of it.

The only real thing that matters about the trumpets is the length and the diameter at the small end anyway. The diameter opening at the small end is restricted by having to fit up to the ITB, so that won't be any different. Unless they make the length significantly longer or shorter than the OE trumpets, which it doesn't look like they're doing, you will see zero difference in the dyno plots. Even if the length is a little different, all you will see is a small change in the RPM peak power/torque occur at. Shorter will shift the peak power a little to the right, and longer a little to the left. The trumpet opening or curvature isn't significantly different either.

The quality and fitment we will have to wait and see given their track record, but this OEM snobbiness about performance is pretty ridiculous.
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Old Thu, Jun-07-2018, 06:50:47 PM   #37
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

Awesome looking bumper. Can’t go wrong with Oem
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Old Thu, Jun-07-2018, 06:50:52 PM   #38
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

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Originally Posted by Volke View Post
this OEM snobbiness about performance is pretty ridiculous.


Goes for the whole forum really. There's a difference between selecting certain OE parts for particular jobs like OE waterpump or something and being ridiculously rigid about BMW being perfect and any non-OE part/mod to the car lowering its value.

There are good and bad BMW parts. There are good and bad aftermarket parts. Most things BMW are the best, but it's not a rule.
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Old Thu, Jun-07-2018, 06:52:58 PM   #39
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

Quote:
Originally Posted by Volke View Post
You're giving BMW way too much credit. The CSL box was designed back in like 2001. Take it from a hydraulics engineer, CFD simulation wasn't very good, user friendly or wide spread back then. It's pretty unlikely they even did any significant amount of it.

The only real thing that matters about the trumpets is the length and the diameter at the small end anyway. The diameter opening at the small end is restricted by having to fit up to the ITB, so that won't be any different. Unless they make the length significantly longer or shorter than the OE trumpets, which it doesn't look like they're doing, you will see zero difference in the dyno plots. Even if the length is a little different, all you will see is a small change in the RPM peak power/torque occur at. Shorter will shift the peak power a little to the right, and longer a little to the left. The trumpet opening or curvature isn't significantly different either.

The quality and fitment we will have to wait and see given their track record, but this OEM snobbiness about performance is pretty ridiculous.
It may not have been widespread back then, but the intake trumpets were developed by BMW's F1 team. Even in a not wide spread time, if anyone was going to have the good stuff... well, it's them.
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Old Thu, Jun-07-2018, 06:55:33 PM   #40
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Default Re: Streamline bumper thrown in the trash , OE one now fitted.

Quote:
Originally Posted by TboneM3 View Post


Goes for the whole forum really. There's a difference between selecting certain OE parts for particular jobs like OE waterpump or something and being ridiculously rigid about BMW being perfect and any non-OE part/mod to the car lowering its value.

There are good and bad BMW parts. There are good and bad aftermarket parts. Most things BMW are the best, but it's not a rule.
Agreed.

We're talking about the same company that had a terrible rear subframe mounting design for 2 generations of 3 series

Just because it's official BMW, doesn't make it good.

Quote:
Originally Posted by Obioban View Post
It may not have been widespread back then, but the intake trumpets were developed by BMW's F1 team. Even in a not wide spread time, if anyone was going to have the good stuff... well, it's them.
That is true. Still doesn't mean too much if the software wasn't that good/accurate, but that's just speculation.

We'll just have to wait and see what happens. I was just trying to point out that dismissing something because it's not coming straight from BMW is silly.
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Last edited by Volke; Thu, Jun-07-2018 at 07:00:10 PM.
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Discussing Streamline bumper thrown in the trash , OE one now fitted. in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)