07-27-2024, 01:05 PM | #1 |
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Custom X5M Titanium Cat-back Exhaust (from China)
So, I have been speaking with a gentleman in China for the last few months about building a custom titanium exhaust system, and finally pulled the trigger as the price is just too good to be true.
I ordered a cat-back system with an x-pipe, carbon tips and setup to use the OEM valves. They use 3" TC4 titanium and should weigh in at 50lbs. (48lbs as delivered) There are lots of reviews with pictures on Alibaba for this manufacturer, with a handful from supercar owners. They seem to do great work. https://www.alibaba.com/product-deta...707006261.html $2138 shipped to the US via air. 30% deposit, the rest due upon completion / QC. Production starts Monday, will post pics as they roll in... I contacted Allen at +86 183 4416 7400 via What's App to order.
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07-27-2024, 02:58 PM | #2 |
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Titanium is awesome, helps with the sound and weighs less but honestly my butt dyno can’t really feel the difference in speed that is saved by it weighing less. That exhaust looks very well made, I can’t wait to hear your sound results!
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07-27-2024, 04:37 PM | #4 |
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That's about right for titanium. Please make sure you specify the following;
thick wall titanium if it's an option Welds must be purged on both sides Make sure pipe diameter is consistent, also make sure it's the right size Specify extra packing in the muffler so closed operation is actually quiet ING is pretty decent. I run Chinese exhausts on a few cars because the vendors that resell them here have crack-pipe pricing. In for videos when you get it.
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07-28-2024, 03:12 AM | #7 | |
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Also be sure to get your name and a timestamp in front of your exhaust before you send the rest of the funds. Ensure you are very thorough in your order and be prepared for small upcharges to get exactly what you're looking for. You also for sure want to specify US-Spec -the exhaust I got for the m2 has all the OPF bungs that I had to block off.
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07-28-2024, 03:35 AM | #8 | |
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If anybody else has experience please share! Super curious to hear what others say as I’m alway weary of reviews on the Aliexpress/alibaba sites lol always feels like they sneak a couple of their cousins and friends reviews I there 😂
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07-28-2024, 12:13 PM | #9 |
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I have been told about 100lbs, I will weigh it when I get it off the truck.
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07-28-2024, 12:34 PM | #10 |
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I have confirmed they are using a 1.5mm thick TC4 Titanium stock at 3in diameter throughout and they said they use a TIG (Argon) welding process.
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07-29-2024, 05:00 PM | #11 |
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Make sure it's purged on both sides so the beads don't look like shit and fall apart on the inside. Grade 2 and 5 titanium can be a pain. I also can't state enough to make sure you do us spec not euro spec so you don't get all the OPF bungs.
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07-30-2024, 10:17 AM | #12 |
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Great advice, thanks!
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07-30-2024, 05:59 PM | #13 |
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One thing for sure, that exhaust looks sexy as hell.
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08-07-2024, 10:53 AM | #15 |
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Not sure what they are saying, but I like it!
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08-11-2024, 01:30 PM | #16 |
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my X5M is on downpipes primary and secondary them all other side of exhaust gpower sound was very good as someone desribed here as muscle car, but in lower rpm it gives too much drone inside.
Then I removed gpower exhaust and installed stock exhaust now there is not much drone but I dont like the noise in lower rpm its very bad for a V8. I am considering to install again GPower but only catback end side and keeping stock exhaust resonator there so perhaps I will have again good sound but not much drone. What do you think guys should it work this way? Now I want to install |
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08-12-2024, 05:20 AM | #17 |
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Exhaust should be shipping tomorrow. Pictures not the best quality, but looks to be as advertised:
Edit: Piping is all 3" as advertised.
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08-20-2024, 07:30 PM | #20 |
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Exhaust arrived today, will be installing tomorrow.
It is so light weight, like unbelievably light. I can't wait to weigh the stock system and see the difference.
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08-21-2024, 08:43 PM | #22 |
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Exhaust turned out better than I could have imagined and it sounds incredible!
Damn near perfect fit and finish. No drone, no rasp, super clean sound under full load. Akrapovic style carbon exhaust tips are high quailty. We did have to flare the pipe a bit to get it over the stock downpipes, but that was the only modification that had to be made. It is actually quieter than stock with the valves closed and purrs in S+ and under a heavy foot. Nice pops between gear shifts and low rpm deceleration. Piping is 3" throughout. I was a bit suprised at how light the stock exhaust was, I expected a bit more to it. Gained a 24 lb weight savings with the titanium exhaust (it weighed in a 48lbs), with the stock exhaust coming at 72lbs. Overall, super happy with my purchase! My GoPro was dead when I grabbed it, but on the charger now, will post some videos soon...
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96 SC E36 ///M3 Racecar - Alexander Calder BMW Art Car Homage Wrap 14 Porsche GT3 - PTS Arena Red Metallic Last edited by azm3; 08-23-2024 at 02:45 PM.. |
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