Primary & secondary cat delete smell?

[codinge90]

Is anyone in San Diego running secondary and primary cat delete on their e9x m3? I currently have test pipes and thinking of deleting my secondary cats but I hear the smell gets a lot worse. If anyone is running this setup in San Diego please reply/pm me. If it'd be possible to meet up so I can hear/smell the car to see if it's a good route to go. Thanks in advance!

[codinge90]

Also, anyone feedback is appreciated! I rarely smell anything with test pipes, is it really that much worse without the secondary cats?

[Ervin87]

Originally Posted by codinge90

Also, anyone feedback is appreciated! I rarely smell anything with test pipes, is it really that much worse without the secondary cats?

Yes, huge difference in smell with secondaries removed.

[j2nicee]

Mine smell all the time but its only noticeable when sitting still, also the car will be slightly over the middle temperature hash when driven for long periods.

[skrm3]

I have the akrapovic catless x-pipe and it smells pretty bad. Passengers always complaining, friends never want to drive behind me, and always seeing people move over in my rear-view mirror. I rarely drive with windows down more than half way because I literally cannot breathe at red lights. But with windows all the way up, can't smell a thing. I usually just drive with windows 1/4 way down to hear my exhaust, smell isn't TOO bad, worth it IMO and the power gains is a plus!

[jinuwin]

I deleted the primary first. And for me, I didn't notice much of a smell difference just tiny bit of volume. But I always drive with my windows down so I guess I got used to it lol.

[Dave07997S]

You are basically running now a catless setup and you will smell the exhaust. I smell exhaust now with just testpipes but pretty much only when the car is cold. When the car is fully warmed up and the rear cats are to temp pretty much OEM.

Dave

[opihi5]

Originally Posted by Skurttm3

I have the akrapovic catless x-pipe and it smells pretty bad. Passengers always complaining, friends never want to drive behind me, and always seeing people move over in my rear-view mirror. I rarely drive with windows down more than half way because I literally cannot breathe at red lights. But with windows all the way up, can't smell a thing. I usually just drive with windows 1/4 way down to hear my exhaust, smell isn't TOO bad, worth it IMO and the power gains is a plus!

I think your passengers are over reacting, I drive behind/in catless cars and the smell is good. Not overwhelming at all, I guess they are just more sensitive.

[Edward]

I run an Akra Evo and so I just have a 100 cell secondary. The car smells when cold even stock so I almost can't tell a difference. When the pipes are warmed up it smells less but even still, with windows down, when you come to a stop, the forward inertia of the fumes will enter your cabin and not smell nice at all.

[kerrit]

i'm catless with a blower, so it's even more rich. windows down when stopped more than a few seconds and the smell is pretty bad, I've debated adding secondaries in but I love quad resonators..

[Talk2meg00se]

running akra evo with cold start tune - the smell is pretty powerful.

[loveskiing]

Hey who cares if there's noxious odors and pathogens for you, your passengers, and all the other drivers around you? Your lungs won't notice for many years and by the time they do, you'll think it was something else that caused your demise. I say screw the air quality and screw your health if you can get more power from the car!

[///M Power-Belgium]

[loveskiing]

Originally Posted by ///M Power-Belgium

:

[monterey]

If you like the smell of raw gas go for it.

[becausephilchow]

I run the Macht Schnell Track Pipes on the OEM XPipe/Exhaust.

Installed a few days ago, but so far, I haven't noticed any poor smells or anything though. Maybe only a slight slight hint of it.

There are still secondaries in tact, so I'm pretty sure that helps a lot anyways.

[///M Power-Belgium]

Originally Posted by loveskiing

:

[Solo_M_Tech]

It doesnt bother me at all. Im fully catless and dont smell anything.

[loveskiing]

Originally Posted by Uber///M

It doesnt bother me at all. Im fully catless and dont smell anything.

This phenomenon occurs with technicians who work in nail salons, folks who work in oil and gas refineries, people who work in printing, etc...where others are overcome with the odors but the ones who are exposed to it repeatedly say the same thing...
"I don't smell anything..."

[STR8-6IX]

deleting your primaries would make a much bigger difference with smell vs your secondaries.

a secondary cat delete will give you a deeper exhaust note and a stronger top end pull. maybe 5 hp gain.

[opihi5]

Originally Posted by 6IX-F10-N52

deleting your primaries would make a much bigger difference with smell vs your secondaries.

a secondary cat delete will give you a deeper exhaust note and a stronger top end pull. maybe 5 hp gain.

A secondary delete on top of primary will make it deeper??? I thought it would increase rasp

[STR8-6IX]

Originally Posted by opihi5

A secondary delete on top of primary will make it deeper??? I thought it would increase rasp

maybe a little bit, but not in an offensive way. it will mainly give the exhaust note a nice, deeper tone.

secondary with primary might be a little bit too much though but I would still do it anyway just for the gains and sound