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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications M340 quad exhaust

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      12-17-2023, 08:23 PM   #463
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      12-21-2023, 02:20 PM   #464
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Ali Gloss Black tips with the bolts. Welds are good. Fitment is the same, sticks out a little more than I’d like. Will try to trim the stock pipe when I get some time and when it stops raining. Overall, not bad for $160.
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      12-26-2023, 08:26 PM   #465
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Anyone with the LCI have more photos of their quad exhausts? Would love to see some examples of 3.7” vs the 4” on the LCI.
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      01-25-2024, 05:23 PM   #466
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I just got my IA 3.7 Gloss Black quad tips today but not thrilled how far they stick out from the diffuser.

I have the MPE which would require me to cut about 3/4” off to get my perfect fit.

Not willing to cut the M Performance Exhaust so decided to go back to stock tips. I will let these go for $150 if anyone here interested. Just PM me.
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      01-25-2024, 06:12 PM   #467
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I purchased these from Aliexpress and saved about $100 cutting out the vendor market ups.
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      01-26-2024, 10:09 PM   #468
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Quote:
Originally Posted by Ronan703 View Post
Nice, was thinking that route as well. I like those M style tips a lot.
IAW quad exhaust tips work with AWE exhaust. my friend installed on his. no problem at all.
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      01-27-2024, 04:21 PM   #469
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Hi, who knows how to mount these tips?



Last edited by Davg31; 01-27-2024 at 06:10 PM..
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      01-27-2024, 06:09 PM   #470
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Quote:
Originally Posted by bimmerstar View Post
IAW quad exhaust tips work with AWE exhaust. my friend installed on his. no problem at all.
By no problem, do you mean it fits right over AWE's OE style tips without any modifications? I would think IAW's oval pipes would be too shallow on the ends to fit over a round pipe, but I'd love to be mistaken on this. Any chance you can send some pictures?

If they slip right on then that's huge. I'd most likely go that route myself.
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      01-28-2024, 10:39 AM   #471
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Quote:
Originally Posted by Stag77 View Post
By no problem, do you mean it fits right over AWE's OE style tips without any modifications? I would think IAW's oval pipes would be too shallow on the ends to fit over a round pipe, but I'd love to be mistaken on this. Any chance you can send some pictures?

If they slip right on then that's huge. I'd most likely go that route myself.
yes, they slip on and my friend secured to the outlet with some screws.
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      01-28-2024, 05:54 PM   #472
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Quote:
Originally Posted by CarGuy954 View Post
I purchased these from Aliexpress and saved about $100 cutting out the vendor market ups.
look great!
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      02-16-2024, 03:24 PM   #473
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Just got my IAW black carbon 3.7” quad tips today. They came with a variety of scratches and scuffs. Am I nitpicking here or should I ask them to send me new ones without these types of defects?
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      02-16-2024, 03:44 PM   #474
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AZHusky IAW are accommodating in my experience, so I would ask for sure. They may offer a partial refund if you're okay with keeping; at minimum I'd be asking for that.
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      03-17-2024, 12:09 AM   #475
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Quote:
Originally Posted by AZHusky View Post
Just got my IAW black carbon 3.7” quad tips today. They came with a variety of scratches and scuffs. Am I nitpicking here or should I ask them to send me new ones without these types of defects?
To close loop sent them back and got new ones (took a couple of weeks since they were sending an improved batch with better clamps). New ones were much better and no noticeable marks on them.

Now just struggling to get them on so that they are perfectly level. OCD gonna kill me.
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      03-24-2024, 12:01 PM   #476
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Not sure if others are experiencing this but sharing here as a PSA. I prefer the look of the quad tips tucked in and under a bit more. However noticed after a wash yesterday that there seemed to be some kind of discoloring or damage to the glossy black rear diffuser. Tried cleaning it off with 50/50 IPA but no avail. I’m thinking the exhaust fume heat may have caused some issues with the clear coat.

Pictures show the impacted areas. Not surprising, left has more damage than the right due to the flap open/closing on right side. I decided to go ahead and move them further out so that the ends are past the bumper more. Pictures show before and after.

Anyone else experiencing this? Or could it be something else causing the clear coat issues on the rear diffuser?
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      03-25-2024, 07:46 AM   #477
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Quote:
Originally Posted by AZHusky View Post
Not sure if others are experiencing this but sharing here as a PSA. I prefer the look of the quad tips tucked in and under a bit more. However noticed after a wash yesterday that there seemed to be some kind of discoloring or damage to the glossy black rear diffuser. Tried cleaning it off with 50/50 IPA but no avail. I’m thinking the exhaust fume heat may have caused some issues with the clear coat.

Pictures show the impacted areas. Not surprising, left has more damage than the right due to the flap open/closing on right side. I decided to go ahead and move them further out so that the ends are past the bumper more. Pictures show before and after.

Anyone else experiencing this? Or could it be something else causing the clear coat issues on the rear diffuser?
I highly doubt this was the issue. When I had my stock exhaust on my M340i with those same tips, I had them in about as far as I could get them and I never had any issues like the one you’re showing.
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