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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Analysis Paralysis on Catless Downpipes

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      11-23-2023, 11:02 AM   #23
6speed_M2
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I have a high flow cat and I’ve had catless. I only went with a high flow to avoid the gas smell but I personally liked the spool from the catless downpipe more.

My current set up is the HJS 300 high flow cat, stock resonator for the freeway drone to lower and the MPE.

This video was the Wagner catless with stock MPE (no res)

https://youtube.com/shorts/N4zeTGpP7...xCep29zs-JAIGW

I love the sound now with the high flow cat, with or without the res, but I do miss the spool and aggressiveness of being catless without the res.
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      11-23-2023, 08:27 PM   #24
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Quote:
Originally Posted by ///MPhatic View Post
Not sure how anyone could like the sound of catless over catted, but to each their own. You're not going to get any different sound from any of the cattless versions, they're all going to be bright, raspy and nasty. lol
I’m with you on this. Even the 200 cel Fabspeed is maybe a touch too raspy and smelly for me, kinda wish I went with a higher cel count sport cat like the AA.
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      11-23-2023, 09:48 PM   #25
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Originally Posted by Sundinisagod View Post
I’m with you on this. Even the 200 cel Fabspeed is maybe a touch too raspy and smelly for me, kinda wish I went with a higher cel count sport cat like the AA.
Agree. I got a great deal on my Fabspeed, barely used for $850 shipped, or I would have kept shopping. I'm not sure what cell-count is required for Stage 2/93, but I think it's possible to go a bit higher than 200.
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      03-15-2024, 09:21 AM   #26
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Just an update, I went with the CTS turbo catless since it was one of the few I could find with mounting tabs. The construction is great, but in all honest the fitment was pretty poor. Both sides were a hair small mounting to turbo and lower dp side. Also one of the mounting tabs needed A LOT of convincing to line up.
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      03-15-2024, 03:34 PM   #27
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Catless too metallic raspy sounding for me, that and fumes/bad for you/the environment and minimal power gains Vs sports cat.
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      03-15-2024, 06:57 PM   #28
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Quote:
Originally Posted by k_mann View Post
Just an update, I went with the CTS turbo catless since it was one of the few I could find with mounting tabs. The construction is great, but in all honest the fitment was pretty poor. Both sides were a hair small mounting to turbo and lower dp side. Also one of the mounting tabs needed A LOT of convincing to line up.
im sorry to hear that, but thank you for the feedback
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      03-18-2024, 03:14 PM   #29
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Quote:
Originally Posted by k_mann View Post
Just an update, I went with the CTS turbo catless since it was one of the few I could find with mounting tabs. The construction is great, but in all honest the fitment was pretty poor. Both sides were a hair small mounting to turbo and lower dp side. Also one of the mounting tabs needed A LOT of convincing to line up.
The factory exhaust has a mounting point not to far away from the downpipe so we found that the bracket is not really necessary once you remove the weight of the stock downpipe. Give us a try next time our fitment is on point.
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Last edited by Info@mad-us.com; 03-18-2024 at 03:38 PM..
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      03-20-2024, 11:22 AM   #30
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We don't offer MAD catless, so i can't confirm fitment, but their catted has excellent stock-like fitment.
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