Catless dp smell?

[X5Brian]

Hey guys, I have a stage 1 tune and looking to do a catless dp and FMIC upgrade… how is the smell?? Is it bad or strong ? Want to do a stage 2 tune but these are suggested …
2017 x5 n55

[sukhk527]

It's not bad but you can tell. but really only an issue at idle.

[topspeed55]

I had catless for two weeks and switched it out to a high flow catted dp. There are lots of people on here saying it's not bad, can only smell it at stop light, in parkade or garage etc but that's enough reason to not go catless imo. The smell is foul and it can burn your eyes and nostrils plus it got way too loud (HIGH PITCH), not really an X5 thing if you ask me, maybe cool if you were a kid rolling around in a 320. Just my 2 cents.

The catted dp is way more tolerable, not nearly as restrictive as stock, it's still a bit smelly when COLD but once the cat is toasty it gets rid of pretty much all the bad smell. Quiet down the high pitched turbo whistle by about 50%. Trade off is you do pay over twice the price, only half the performance of catless. You gain better smelling exhaust that's less annoying sounding.

[Jars914]

Originally Posted by topspeed55

I had catless for two weeks and switched it out to a high flow catted dp. There are lots of people on here saying it's not bad, can only smell it at stop light, in parkade or garage etc but that's enough reason to not go catless imo. The smell is foul and it can burn your eyes and nostrils plus it got way too loud (HIGH PITCH), not really an X5 thing if you ask me, maybe cool if you were a kid rolling around in a 320. Just my 2 cents.

The catted dp is way more tolerable, not nearly as restrictive as stock, it's still a bit smelly when COLD but once the cat is toasty it gets rid of pretty much all the bad smell. Quiet down the high pitched turbo whistle by about 50%. Trade off is you do pay over twice the price, only half the performance of catless. You gain better smelling exhaust that's less annoying sounding.

Catted def the way to go, and with no mpe. Sounds Purrrr-fect

[X5Brian]

So I take it that it's too loud with vibrant or mpk muffler ?
What catted dp did you go with ??

[M302_imola]

Originally Posted by X5Brian

So I take it that it's too loud with vibrant or mpk muffler ?
What catted dp did you go with ??

I don't think it's to loud plus if you keep your OEM valve, comfort mode will only exit one pipe and turns the volume down quite a bit. But don't let others say that catless doesn't smell. It fuking reeks. That being said it's worth it for what stage 2 offers. Just don't sit at idle for long with the car running. My E46 M3 was catless and the X5 smells worse.

My exhaust video w/ catless and vibrant muffler

[X5Brian]

Starting to lean towards catted high flow now even with a stage 2 ….. wife and kids might not like horrible smell

[M302_imola]

Originally Posted by X5Brian

Starting to lean towards catted high flow now even with a stage 2 ….. wife and kids might not like horrible smell

My wife doesn't know I have a catless dp (I used some stored away cash for the purchase) and she always comments "your car smells". She can even smell me after I've ridden in it and walk into the house sometimes. I just say, "yeah I'm not sure why it smells" lol

[X5Brian]

Lmfao, now that's bad !!! I can't walk into executive meetings smelling like fuel or sulfur!!!
Thank you everyone for the info!!!
Does anyone think it will hurt turbo if I stage 2 with stock dp?
Will upgrade FMIC reguardless

[M302_imola]

Originally Posted by X5Brian

Lmfao, now that's bad !!! I can't walk into executive meetings smelling like fuel or sulfur!!!
Thank you everyone for the info!!!
Does anyone think it will hurt turbo if I stage 2 with stock dp?
Will upgrade FMIC reguardless

Not sure about that. I will say that going from BM3 stage 1 to stage 2 didn't feel like it was as huge of a gain going from stock to stage 1. I measured max boost and here's what I got:
stock: 10 psi
stage 1: 18 psi
stage 2: 19 psi

Now I didn't dyno, but butt dyno didn't show much from stage 1 to 2. Butt dyno def felt a difference from stock to stage 1.

[X5Brian]

Def agree with that!!! I did stage 1 MHD and stage 2 XHP tranny and it's amazing

[LanceB22]

Ive heard smells bad and its not bad lol. I believe its only bad when its at idle

[M302_imola]

Originally Posted by LanceB22

Ive heard smells bad and its not bad lol. I believe its only bad when its at idle

But it will be at idle at least 2 times every drive. Start and stop. Which is long enough, especially in a garage for the smell to cling to your clothes. Ask me how I know...

[beats]

You will notice it with the windows down in the summer too. I don't mind it, reminds me of the track