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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 Tue, Aug-28-2018, 04:47:38 PM   #1
Obioban
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Unhappy Streamline CSL bumper install experience and design thoughts

I installed a streamline CSL bumper last Friday, from the GB. I believe it's the latest variant, as it just arrived.

Overall, it convinced me to stay stock for now.

Some miscellaneous observations:

-The bumper is too wide, to the extent that with both of their side mounts in the widest position, the guides on the bumper cracked when subjected to the tension from the fitment issue. The bumper remains sticking out on both sides. Widening the fenders is not an acceptable solution because then you have gap between the hood and fenders, and it still doesn’t address the mount/guide clearance issue
-the bumper can’t be mounted on the struts when the struts are in their centered/default position— which does exist, and works with all factory bumpers I’ve installed
-you can’t use the gasket on top of the bumper, which means increased drag
-I’m reasonably confident the bumper shipped with damaged paint, as the bubble wrap was intact and the paint underneath was damaged
-the clear on the splitters is terrible
-the weave on the splitters is bad
-the paint is extremely prone to chipping
-the fitment between the bumper on the driver side splitter is bad
-the grill mounting system is crappy
-the washer tank doesn’t fit onto the washer tank bracket with out cutting parts of the washer tank off, weakening its mount system. Yes, I'm aware it mounts on a slot-- no position, including all the way outboard allows it to fit.
-mounting the bumper on the bumper shocks is a pain because the nuts are not in a fixed location and you have to hunt for them blindly.
-once you mount the bumper, any job that requires the bumper to be removed (many jobs) will become a huge PITA-- even worse once you glue the splitters on, per the instructions, as then it's harder to access the ASA bolts that attach the bumper.
-there are no mounting provisions for the bumper to the underbody panels or the bumper to the fender liners. Either alone means that the car will fall apart if driven at a high speed
-heavier than stock in net
-I’m not familiar with how the CSL bumper handles this, but I didn’t see any provisions for the CSL air intake grill
-too much space between the splitter and bumper on the bottom to glue it strongly or allow it to be a functional aerodynamic item
-if you’re going to claim that hardware is included, I’d include the $0.20 rivet that attaches the splitters
-there was no rivet hole in the splitters or bumper— don’t know if there should have been, but the instructions implied there should be
-part number for the struts in the instructions is not the US bumper struts he was instructed to get
-packaging wasn’t very good

Overall... not the best.

Streamline has offered a full refund or to pay to have a body shop install it. They also offered to replace the splitters due to the condition of the clear coat on arrival.
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Last edited by Obioban; Tue, Aug-28-2018 at 06:19:48 PM.
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Old Tue, Aug-28-2018, 04:57:01 PM   #2
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Default Re: Streamline CSL bumper install experience and design thoughts

Tldr version :
Quote:
Originally Posted by Obioban View Post

Overall, it convinced me to stay stock

Overall... not the best.

Sorry for your troubles Ian
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Old Tue, Aug-28-2018, 05:15:35 PM   #3
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Default Re: Streamline CSL bumper install experience and design thoughts

I had a lot of the same issues Ian. Routing the CSL ductwork was almost impossible as well.

As far as the CSL hole grille, that snaps into the ductwork and it is inset so then the ductwork slides over the bumper hole. I think they got that right.

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Old Tue, Aug-28-2018, 05:20:35 PM   #4
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Default Re: Streamline CSL bumper install experience and design thoughts

That's a bummer. Makes me feel like I should strike their CSL intake off my list of possible mods if this is a sign of how their products leave their business. I wonder if you just got a bad one or if others have had similar problems?
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Old Tue, Aug-28-2018, 05:20:37 PM   #5
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Default Re: Streamline CSL bumper install experience and design thoughts

Close friend just received and installed what I assume is also the latest version of the bumper. Construction is much more reinforced and better than the Vorsteiner he replaced. The sliding guides on each corner are beefier.

He already spent a few hours on the fitment and it's fairly close but there is a big gap under the headlight on one side, that he says he could likely fix by loosening the bumper shocks. He already adjusted all other mounting points.

Paint looks good, but he already chipped it via contact with a tool. I feel this paint is more "chippy" than stock. CF splitter weave looked good to me at quick glance. Overall, this was going to be my solution too, but I decided against it especially at given price point.

How can we arrange an OEM CSL bumper GB?

Edit: Also, he already chipped one of his sliding guides on the side, which he claims is his own fault from the tire hitting it while backing up/turning over an uneven parking lot. Reading that yours cracked, I wonder if they made that bracket too big causing it to more likely make contact with potential aggressive tire fitments (which his actually isn't..245/35/19 & finger gap).
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Last edited by aznbo187; Tue, Aug-28-2018 at 05:28:08 PM.
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Old Tue, Aug-28-2018, 05:23:39 PM   #6
2006E46M3fan
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Default Re: Streamline CSL bumper install experience and design thoughts

Frankly I'm shocked..../s
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Old Tue, Aug-28-2018, 05:24:18 PM   #7
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Default Re: Streamline CSL bumper install experience and design thoughts

Quote:
Originally Posted by aznbo187 View Post

How can we arrange an OEM CSL bumper GB?
Won’t get enough people when the price is $4k
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Old Tue, Aug-28-2018, 05:28:44 PM   #8
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Default Re: Streamline CSL bumper install experience and design thoughts

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Originally Posted by terraphantm View Post
Won’t get enough people when the price is $4k
Looks like OEM/euro it is.
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Old Tue, Aug-28-2018, 05:31:11 PM   #9
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Default Re: Streamline CSL bumper install experience and design thoughts

Sorry to hear your troubles, can’t say I’m surprised unfortunately :/

Sounds like he’s actually working with you as opposed to what he did with me, so good to hear that the only loss you’re taking is time invested in installing.
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Old Tue, Aug-28-2018, 05:36:40 PM   #10
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Default Re: Streamline CSL bumper install experience and design thoughts

Quote:
Originally Posted by Steve M3 View Post
That's a bummer. Makes me feel like I should strike their CSL intake off my list of possible mods if this is a sign of how their products leave their business. I wonder if you just got a bad one or if others have had similar problems?
We can order a Karbonius, Evolve, or GSR intake together to save on shipping? I should be ready in about a year..depends on where my next job takes me
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Discussing Streamline CSL bumper install experience and design thoughts 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)