[Whysitcold]

Hey guys, was recently introduced to the exhaust options offered by COC performance on alibaba. These seem to be extremely similar to the valvetronic set up and are offered in stainless and titanium versions.

Does anyone have experience with these or know where I can find more sound videos? Thinking of going with one of the options, full TI would be near the same cost (around $1350) as some other options, or stainless for half that price (around $750)

[BandwidthBandanna]

following.

I'm interested in this exhaust as well (stainless) and can't find much info on it either. Is that $750 include shipping, etc? I reached out for 1 and was quoted $1150 including shipping. I am debating about pulling the trigger.

[Whysitcold]

Originally Posted by BandwidthBandanna

following.

I'm interested in this exhaust as well (stainless) and can't find much info on it either. Is that $750 include shipping, etc? I reached out for 1 and was quoted $1150 including shipping. I am debating about pulling the trigger.

I haven’t actually sent an inquiry so I’m not too sure about the out the door price. Was that the quote given to you for the stainless? I’ve been throwing around the idea of giving it a shot as well. Just not sure which variant I would do.

[BandwidthBandanna]

Originally Posted by Whysitcold

I haven’t actually sent an inquiry so I’m not too sure about the out the door price. Was that the quote given to you for the stainless? I’ve been throwing around the idea of giving it a shot as well. Just not sure which variant I would do.

Yea $1150 OTD. I pushed a bit to see if they would go less but wouldn't.

And then, it got me thinking as I am looking to move to California, if I would pass their emissions with this exhaust or not. My car is registered for 2 years in Texas so no immediate concerns to register the car as soon as I move out there (whenever that happens).

[Lain]

I just so happened to buy the titanium one a few days ago. I managed to convince a friend to come in with me for another one of their products so I was able to get a discounted price. Total price including shipping was around 1600. The agent I was speaking with was able to cover the taxes as well so technically I didn't have to pay for that.

Current estimated delivery time will be 40-45 days and will be sent via air.

The reason why I went with this vendor was because of the better pricing (compared to all the other titanium offerings on Ali), 3 year warranty, and excellent service. If you message these guys during their hours, you almost immediately get a response. They are quick to reply and answered any questions I had. They also let me pick out the tips which was a nice bonus.

[CarGuy954]

I have been interested in the Aliexpress & Alibaba options as well. I have seen a few people online purchase these. The fitment, quality and sound have been good. However, they did not specify where they purchased their exhaust.

[Whysitcold]

Originally Posted by Lain

I just so happened to buy the titanium one a few days ago. I managed to convince a friend to come in with me for another one of their products so I was able to get a discounted price. Total price including shipping was around 1600. The agent I was speaking with was able to cover the taxes as well so technically I didn't have to pay for that.

Current estimated delivery time will be 40-45 days and will be sent via air.

The reason why I went with this vendor was because of the better pricing (compared to all the other titanium offerings on Ali), 3 year warranty, and excellent service. If you message these guys during their hours, you almost immediately get a response. They are quick to reply and answered any questions I had. They also let me pick out the tips which was a nice bonus.

Good to hear that they’re easy to work with. Please update us once it arrives and you install it!

[xnick101]

I ordered my COG Catback from Jiangxi Boska Trading Co., Ltd on Alibaba. Everything worked perfectly and the fitment was great. It had a slight issue clearing the metal brace and they said they would adjust their mold. I just removed the brace and it's been fine.

[Lain]

Originally Posted by Whysitcold

Good to hear that they’re easy to work with. Please update us once it arrives and you install it!

Will do. I asked them to keep me updated along the way so if I hear anything, I'll post it here.

[Whysitcold]

Originally Posted by xnick101

I ordered my COG Catback from Jiangxi Boska Trading Co., Ltd on Alibaba. Everything worked perfectly and the fitment was great. It had a slight issue clearing the metal brace and they said they would adjust their mold. I just removed the brace and it's been fine.

Thank you for the info. Any chance you’d be able to upload some videos to hear it?

[xnick101]

Originally Posted by Whysitcold

Thank you for the info. Any chance you’d be able to upload some videos to hear it?

I posted a video of it on the M340i Facebook page if you can see this link. Otherwise I can try to upload it to youtube.

https://www.facebook.com/reel/652454656805032

[lebaaron]

Purchased one a while ago from a seller on Alibaba, overall it's working like it should, the only problem i had was related to the clamps quality and my shop had to weld every connections. I have a 400 cell catted downpipe paired with it and the sound is brutal when valves fully open, i usually keep them half open, and closed in the neighborhood.

[BandwidthBandanna]

Originally Posted by xnick101

I posted a video of it on the M340i Facebook page if you can see this link. Otherwise I can try to upload it to youtube.

https://www.facebook.com/reel/652454656805032

That sounds absolutely batshit insane! Music to my ears. Do you have a DP or just an exhaust? Here I was getting giddy over the fake burbles inside the car.

This makes me so much more tempted but "need to save monies"..

[CarGuy954]

i was unable to view the link and Bandwith's reaction is enticing. Any chance you have another link.

[BandwidthBandanna]

Originally Posted by CarGuy954

i was unable to view the link and Bandwith's reaction is enticing. Any chance you have another link.

Yea, I was impressed. It is a group on FB. I did read he has a VSRF Non-catted Downpipe. CEL would drive me up the wall lol

[xnick101]

Originally Posted by BandwidthBandanna

That sounds absolutely batshit insane! Music to my ears. Do you have a DP or just an exhaust? Here I was getting giddy over the fake burbles inside the car.

This makes me so much more tempted but "need to save monies"..

Correct I have a VRSF Non catted DP. I have an ecutek tune so I have no CEL. And buying an exhaust off alibaba is "saving your moniesss"

[aci4]

Originally Posted by xnick101

Correct I have a VRSF Non catted DP. I have an ecutek tune so I have no CEL. And buying an exhaust off alibaba is "saving your moniesss"

Do you have full control of the valves? How big was the difference from the stock exhaust? I currently have an AA DP and stock exhaust and am looking to possibly get the COC alibaba exhaust.

[GOLDPHO3NIX]

Send clips of the sound!

[xnick101]

Originally Posted by aci4

Do you have full control of the valves? How big was the difference from the stock exhaust? I currently have an AA DP and stock exhaust and am looking to possibly get the COC alibaba exhaust.

Yeah it comes with a remote, you can close or open it or hold it to open the valves in levels. I usually just leave it open all the time unless it's a cold start, I will close it because its loud. And its much louder than stock exhaust with the valves open but quieter than stock with the valves closed.

[xnick101]

Originally Posted by GOLDPHO3NIX

Send clips of the sound!

Originally Posted by CarGuy954

i was unable to view the link and Bandwith's reaction is enticing. Any chance you have another link.

Put it on youtube for you guys.

https://youtube.com/shorts/g6TpxYMYO...eOl2XRfjQAwk3s

[aci4]

Originally Posted by xnick101

Put it on youtube for you guys.

https://youtube.com/shorts/g6TpxYMYO...eOl2XRfjQAwk3s

I was looking at their posting on alibaba for that exhaust and in the product description they mention an option for a larger pipe diameter of 76 mm instead of 70 mm. Did you get to choose which size diameter you wanted?

Here is how it’s worded on their product description:

“We can use a larger 76mm pipe diameter (instead of 70mm pipe diameter) to allow the flow of the entire system to be freer, especially when the two external pipe valves are open, the flow and sound are deeper and more fleshy, which is great. However, in contrast to the aggression produced by opening the valve, when the valve is closed, all the gas is forced into the muffler for muffling and discharged from the two internal tips, so there is no overly noisy buzzing.”

[xnick101]

Originally Posted by aci4

I was looking at their posting on alibaba for that exhaust and in the product description they mention an option for a larger pipe diameter of 76 mm instead of 70 mm. Did you get to choose which size diameter you wanted?

Here is how it’s worded on their product description:

“We can use a larger 76mm pipe diameter (instead of 70mm pipe diameter) to allow the flow of the entire system to be freer, especially when the two external pipe valves are open, the flow and sound are deeper and more fleshy, which is great. However, in contrast to the aggression produced by opening the valve, when the valve is closed, all the gas is forced into the muffler for muffling and discharged from the two internal tips, so there is no overly noisy buzzing.”

I did custom. I did 3.5" on the pipe coming out of the downpipe and then 3" on everything behind that. (I think this is pretty much the reason why I couldn't get the stock brace back on, they need to weld it up higher since the diameter is larger) But you want a minimum of 76mm so it's 3" and allows for better flow.