SECONDARY CAT DELETE + MUFFLER DELETE REVIEW/ SOUND COMPARISON BMW e90 330i/328i

Sound comparison between just muffler delete and muffler delete with a secondary cat delete

[@luisdiaz2384]

I have an '06 330i and this video inspired me to get the muffler/secondary cat delete that same week. It's been about a year since I've done it and couldnt be happier. It's not too loud, but has just enough noise to make it sporty 👍 and the fact that it pops without a tune is just the cherry on top 🔥

[@keving1072]

No trouble with police?

[@viniciusrochafaria6936]

Did u guys delete resonator too?

[@Versility]

@@viniciusrochafaria6936 no

[@noemireles3211]

so is it just a resonator only ?

[@oa4604]

Looks like I found my answer, I have a 06 330 and I’ve been looking for exhaust mods to

[@cameronbrule7912]

Now that's how you properly do a comparison vid! Nice job!

[@BIMMERBOII]

Thanks!

[@datkiddjophat4290]

That’s how I want 2011 328i x drive bmw to sound aggressive to soft. Thank you inspired me to modify my car.

[@2Fast4Youuu]

Amazing comparison brother!

[@Breesh2x]

My 328i sounds just like that with the muffler delete. You making me want to delete my cat too😂😂

[@keegancaspers8428]

u just have a muffler delete?

[@khashi8099]

Dude those backfires 😍😍😍 I’ve seen a couple guys with muffler and secondary cat deletes and it sounds no where near as good as yours!!! Did the muffler shop do anything special because those pops are just so crazy

[@BIMMERBOII]

Thanks man! Nothing special at all. When you tap on the throttle while slowing down it makes those little pops

[@yokev_5611]

You kept the resonator?

[@jaimealexandermartorellsan719]

Hi, i have a 525i 2005 with resonator delete only and still have the cats, what should i do to get burbles or pops?? :( I keep searching a good answer cause a lot of people said that you need a repro o something and others say a dif thing, pls help, i want my car to pop insanely

[@sean_finch]

Hey, love the video. The car sounds amazing! I have a 2006 BMW 325i. If I get a muffler delete should it backfire as much as yours?

[@BIMMERBOII]

Rogers Finch not that much with just a muffler delete. You would need a primary or secondary cat delete to have alot of pops

[@sean_finch]

slerp645 which would give me more pops, primary or secondary cats?

[@BIMMERBOII]

Rogers Finch primaries. But the are inside of the headers so you would need new headers. Removing secondary cats is faster and cheaper. But if you remove both then it's and insane amount of backfire

[@sean_finch]

slerp645 thanks man! Will just a muffler delete have a good amount of backfires?

[@BIMMERBOII]

Rogers Finch not a whole lot tbh

[@seanh.1940]

Looking to get this done..i have the muffler and resonator off so hopefully this will make it a lot louder

[@vladmoldovan7510]

It will make the pops and crackles louder, not much to the sound. also can you upload a clip of the exhaust when you get it done?

[@seanh.1940]

@@vladmoldovan7510 yea

[@SecondCitySanctioned]

@Gavin Pawluk I currently have a muffler delete and I’m abt to go and get my secondary’s removed. From what ive heard most ppl go w muffler and secondary or just straight pipe it from the primary cats back. I’d say go to a shop and remove the secondary’s and if it isn’t loud or aggressive enough then remove the resonator

[@alexandrebalon370]

Can anyone tell me why i dont have any pops with muffler+resonator delete ? Im on 201 330xi e90...

[@thatstocksubie6738]

For the cat delete did you take out the stock cats and put cat less down pipes or you gutted the cats

[@dee_2330]

Now this is Content 👍🏾🔥

[@SirPhillip10]

Hey man love the way the car looks just wondering if you’ve done anything to the body?

[@justinbp6198]

Bro how long has the pipe been worn when u took the vid? I just deleted my muffler and it pops but urs a lil more louder and longer but maybe is because u alr worn the pipes a bit

[@raismerican]

Dudeee, i cut the secondary pipe, mid pipe and catback pipe. Sounds super terrible and i need to put on the resonator back ASAP 💆🏼‍♂️But honestly after i cut the secondary pipe, more burbles 😍 nice video btw 👍🏼

[@ithinkweregoingtoneedabigg8525]

You should have just bought a civic if you were going to destroy your car like that

[@raismerican]

Deven i straight piped my car for one day. It was bad. So I Decided to change the full exhaust pipe w Remus. And im good rn 😉

[@mohamedmalki396]

Does O2 sensor code comes out ( check engine light)? After taking the secondary cats off?

[@nathanwright8205]

Love the vid! I have a 2011 bmw 328 with a muffler delete and I like the tone.. if I do secondary cat delete will it make it any louder? I don’t want it to be loud I just want more pops... thanks!

[@BIMMERBOII]

Nathan Wright yes! I really recommend it becuase it hardly makes it louder if at all. But more pops for sure

[@TheAukai]

Nathan Wright did you do it?

[@fatalb34st71]

Did you do it Nathan

[@programerrobotics2763]

Best comparison video 🔥

[@sean_finch]

How noticeable is the drone on the highway with just the muffler delete? Can you still hear your music clearly?

[@BIMMERBOII]

Rogers Finch the drone is present for sure but definitely not that loud. You can have a normal conversation and listen to music just fine

[@mb24777]

perfect video. you're the man.

[@BIMMERBOII]

Thank you. Appreciate it!

[@mb24777]

BIMMER BOII question do you see any difference in HP?

[@bestvids7073]

That sounds so sick dude! Would just a secondary cat delete sound good or would you advise pairing it with the muffler delete? I don't want my car to be too loud.

[@pikachupowers]

delete your secondary cats and install a borla or magnaflow muffler in place of your stock one. check out your video if you want to hear what that sounds like.

[@BIMMERBOII]

Honestly if you want a subtle performance sound just replace the stock muffler with a magnaflow

[@Steven.gillroy]

Best Vids what did you end up doing?

[@shaunrosenquist4830]

What did u use for the lining strips on on your car? Thinks about doing something like it.

[@BIMMERBOII]

Pinstripe

[@Smok0z]

Hope all is well bro god bless you ❤️🙏

[@alekspetkov9624]

Dose it drone on the Hwy a lot?? I have a m performance muffler, res delete and am thing about secondary cats but don’t want any droning

[@tommymercier7021]

Im interested in knowing if it drones on the highway too 🤔!

[@Jesus-bmw]

It actually dosnt it’d pretty quite and sounds nice a little late but I did it to my car it sounds great no droning at all

[@elis.3203]

Jesus0119 Did you keep the stock resonator?

[@rastaco.1871]

We need to link up when I move to Florida

[@claudioagmfilho]

How everybody, I was wondering how much of a downpipe would the muffler delete + the resonator delete, maybe 20% of a downpipe of freeing power? Or what would you say that would that is the equivalent to a downpipe?, I already know that the muffler is restrictive and also is the downpipe, and to a certain lesser degree the resonator, you see I don’t want to take out my downpipe and put a catless downpipe in, like everyone else does out there, my option to a downpipe would be a resonator plus muffler delete, the porcentagem to a downpipe in freeing power of the exhaust system, that sound is even better with a muffler and a resonator delete on a bmw 330i or 320i, because it’s less raspy to me.

[@Max-op6dq]

So I have a muffler delete and put over 1k miles so it’s broken in and sounds good. How much louder would the secondary cat delete make it. Thanks

[@Beastmode23564]

Max hella loud

[@diegopayromaniac6800]

hello I have a 330xi e90 2006 until now I have it with muffler delete if I remove the cat does it become annoying for the day to day? I wonder why I am on the road a lot also thanks and greetings good video!

[@Roctv]

Do you recommend putting this on an automatic? And would I still hear the crackles

[@BIMMERBOII]

Roc2drippy - yes sir. Mine is an auto and this is how it sounds so I say go for it

[@dvn1329]

good video but why tf is it 3 minutes of idling..

[@iamnormalandcanbetrusted]

i think taking the muffler off has too much of a hole in the exhaust pontiac sunfire / civic sound ... might just do second cat delete

[@KILLINGSNOWMEN]

Getting just a muffler delete on e90 328i, with that being said does having a 330i sound any different compared to the 328i with a muffler delete? Or are they about the same?

[@BIMMERBOII]

It's gonna be the same. The engine is exactly the same it's just the 330i has a bit more power becuase it's its 3SIM

[@Los8732Ebe]

I see it’s been a few months since the post. Has it gotten annoying ? And how bad is the drone in the car ?

[@BIMMERBOII]

Los8732Ebe the drone is the same as it was with the muffler delete with is really noticeable and low rpms cruising like at 60, 70 I dont mind it.

[@Wonder_1503]

how would it sound on a manual 330i I'm thinking about doing that on my car ..would i be able to do the smoke check though?

[@rfo77]

Did you get any errors after removing the secondary cats?

[@ragalyisp]

I'm thinking catless headers, high flow cats on the front pipe section, custom piping for the midpipes with resonators, and stock muffler. Idk this car well, I gather I'd get the sound I want(medium loud/deep tone) I dont like cheater extenders on the o2 tho. Will need to do more research. Do the shark injector reflash have a fix for it?

[@BIMMERBOII]

Sounds like you'd have a really nice sounding setup. Just loud enough 👌🏼

[@lordofloneliness2069]

So you got rid of the secondary cat and the muffler. But left the stock resonator?

[@user-iv2df5ed4y]

yeah

[@Coderedpirate]

How long did it take for your set up to break in? I recently got my secondaries done recently (still have my resonator) and to be honest the noise sounds about the same apart from the deeper exhaust note. I also thought my car would pop and burble a lot more but again, feels kinda the same when I just had a muffler delete

[@frankielatargia3491]

if its pops and burbles you're looking for, res delete is the way to go

[@Coderedpirate]

@@frankielatargia3491 yeah, I figured. My car does pop and burble, but pretty much exclusively on the down shifts. I don't really wanna take my resonator out because I have the strong feeling that I'll want to put it back on shortly after. Definitely satisfied with what I have now.

[@BattTube]

Not true, the pops are caused by unburned fuel exploding. The cats are what are supposed to burn off those fuels, hence without cats you get pop. Maintaining the res will actually keep the tone deeper. Take out the res and your straight rice

[@n4p4lmssecretalt]

You can just get a aftermarket resonator that’s less restrictive

[@Vapid_Idiot]

How is your piping set up? I want to do this to my 06 330i. Do you neck down to 1 pipe after the manifolds, back to 2 for the resonator, then back down to one the rest of the way, or 2 pipes up to the resonator off each manifold? So I know how to explain it to the muffler shop. Thanks!

[@BIMMERBOII]

So for the cats, literally just cut out the two cats and put in two pipes to fill in that gap. And for the muffler, again, just cut it off and welded one pipe out the bumper and welded tips to the end of it

[@Vapid_Idiot]

BIMMER BOII wow, I way over-thought it haha. That's pretty simple. Thanks!

[@capeofstormz5974]

@@BIMMERBOII What about the O2 sensors?

[@diegopayromaniac6800]

In low rpm it sounds much more than just with muffler delete? or is it almost the same?

[@swagbot26]

Why is your service engine light on because of the cat delete?

[@mihsst803]

Do u not have a light and did the mechanic take out ur cat for you and was it the secondary cat

[@jailynhicks3997]

The primary cats have the sensor, so he doesn’t have a light on the dash because he only took out the secondary

[@mihsst803]

@@jailynhicks3997 yeah in the 3 years since I asked that I got the answer thanks lmao

[@wrathofdiablo]

Hi, nice sound you have there. I have a 330i as well and would like to do a muffler delete. My concern is about the low end rpm which I'm in mostly due to city drives. Do you lose any power or pace? Thanks!

[@vvtheonevv4007]

BeemerE90 hell yeah

[@SixSpeedSeven]

You will not lose any noticeable amount of power or torque with a muffler delete.

[@diegopayromaniac6800]

What about 2 cat delete + muffler delete? too much to use daily?

[@papiiandre]

Sick ass headlights bro, where you get em? I can’t find any nice ones for my 2009 328i

[@moshakra02]

Ik this is an old comment but they’re just red tint cutouts for the reverse lights you can buy on amazon, those are stock pre lci tails

[@proudeagle2554]

bro is it safe ? any error or engine fault did you get after cat delete ? and is it safe on high rev pushing ? i mean such problems like fire or overheating ?? plz answer to me

[@Psychicrevan]

PROUD EAGLE25 it should only give you codes when you delete the primary cats.

[@BIMMERBOII]

Cat delete is 100% safe for the car. It doesnt control anything other than filtering the gasses so no risk of over heating or fire

[@connorfalcon7080]

BIMMER BOII very helpful advice i was worried about that

[@keegancaspers8428]

the car is stock other than the muffler delete an secondary car delete?

[@kevinazcona9212]

Would it sound the same if I did a muffler delete and cat delete on a 328xi? (Assuming it’s on sport mode)

[@wass.s3001]

Did the secondary cat delete cause you that check engine light? Because mine did lol

[@junsujeong]

secondary cat + muffler delete makes more pops than just muffler delete, right? I only did muffler and thinking of doing the cat delete.

[@georgesfeghaly1165]

Sir, any decrease in low end torque when you did that muffler and sec cat delete? Bcz i deleted the muffler only and i lost a little bit of power

[@ithinkweregoingtoneedabigg8525]

Yes there is a list in low end torque, it smells bad and will sound horrible with a resonator delete. That being said you will need a tune to tie in the deletes

[@Justin-ty6mu]

@@ithinkweregoingtoneedabigg8525 what type of tune?

[@ithinkweregoingtoneedabigg8525]

@@Justin-ty6mu turner or ECS sells tunes for all that

[@joshua.johnson]

So just to be clear, this car still has the resonator?

[@JDe-wk5pc]

Yo did you feel any power gain

[@quirozemmanuel]

Where’d you get those rear diffusers? Got the link?

[@c5_speed_freak866]

@bimmerboii did have any droning noise from either setup at cruising speed?

[@AImighty]

You're in FL too? Just moved here and need some new peeps, let's meet up and cruise sometime man.

[@BIMMERBOII]

Where in Fl are you?

[@AImighty]

Tampa, you?

[@lllmaurlll]

Do you still have the resonator installed or is that deleted too?

[@a.b.ripper9908]

How did you get those pops? I did the same thing but no pops

[@davoroxi]

Same ):

[@tgsn_]

Would you say it got louder after the secondary cat delete? I notice it crackles/pops a lot more but the note sounds almost the same on camera. Getting a Muffler delete done sometime this week, curious if I should just remove both.

[@BIMMERBOII]

TGSN _ so when it's in park the revs sound pretty much the exact same as just the muffler delete. But when it's under load and your driving it does sound different. A bit louder and deeper rumble and tone. Honestly would recommend getting it done if your going to get the muffler delete anyway. It's a good compliment to the sound.

[@tgsn_]

Appreciate the quick reply! Looking forward to some more videos

[@BIMMERBOII]

TGSN _ of course. And thank you very much. Working on some soon

[@n54gasm.e92]

Is the gurgle louder and longer ? I have muffler delete and it gurgles about 3 to 4 times . Not very loud

[@BIMMERBOII]

SuperKeko15 yea it gets a bit louder and longer for sure

[@tbp9183]

My 328i has bad cats and I don’t wanna replace em for $8k What’s the worst that’s gonn happen to my car?

[@tbp9183]

Once I get em cut out 👆🏽

[@nathanielnieves1008]

Is the popping from cat delete or muffler Deere or both

[@jarrod_hickman]

First things first just wanted to say the thing sounds awesome man xD. Secondly what did the muffler shop do? (what size pipes, what tips, etc) I have a 2010 328i and would love for it to sound like yours :)

[@BIMMERBOII]

Jarrod Hickman so they welded 2.5inch pipes to replace the muffler and secondary cats, the tips I got for like JEG's or something for like $60 and they welded them on for me.

[@jarrod_hickman]

Sorry but how much did u pay for this all? xD

[@titobenito5321]

Can this work on a 08 n52 e90 328xi?

[@BIMMERBOII]

Yes it definitely should

[@fernate1234]

So you're running header & a muffler delete ?

[@henryhagemann8586]

So it will burble with a muffler delete?

[@Inline6Photo]

Did this give a check engine light? My boy said it would

[@ronaldtruong6351]

the secondary cats dont have any sensors so I don't see why it would.

[@abraham9852]

i want my 325i to sound nice and loud but as a daily driver but i don’t know anything about that. what do i do to my car? what is the best thing i can do to it? can u help?

[@BIMMERBOII]

I'd suggest muffler delete. Loud enough to hear, but easily daily driver worthy

[@alexwalsh31]

Did you tube in the burbles or all narural?

[@Tdd1661]

I currently have muffler delete on my e92, and I can definitely feel there are loss of torque without the muffler. I'm thinking about doing second cat delete next. Do you know if second cat delete makes the car lose more torque?

[@rdrgtastuntman]

Removing a muffler and/or cats actually increases hp and torque because you’re letting the exhaust flow better, which is also better for the engine. You could gain probably up to 20-30 hp and 20-30 ft-lbs of torque by doing the car delete

[@Justin-ty6mu]

@@rdrgtastuntman is this true?

[@SixSpeedSeven]

@@Justin-ty6mu no. not at all. Like not even close. But you don’t lose power either.

[@curtisjohnson8814]

I have a 2011 bmw 328i e90 automatic and I currently have a muffler/resonator delete if I remove the cats as well will it make the same amount of pops and crackles as in the video?

[@zuliic9493]

does it crackle and pop? i have same model

[@animfix2840]

would you recommend the muffler + cat delete or muffler + resonator delete

[@patron6666]

Deleting resonator and muffler will be loud but if you really want pops, the cats are what prevent it so removing the cats would give you the most pops and remove all three for most pops and volume

[@iTonyC]

How much was the muffler delete for you?

[@JayJay-bd5rf]

To get this done on my car I just ask for a muffler delete and cat delete?

[@BIMMERBOII]

Jay Jay yup

[@angelomaselli5191]

You have burple tune or is it from straight pipe ?

[@Frenchii9YT]

I have a 325i 06 what do i need to do to get this sound man someone said muffler and reso u said muff and secondary cat plz help i go monday 😞

[@alexanderantunez5789]

what did you end up doing

[@cookiesareincenteroftheuni6971]

So the whole city is empty?

[@ek1767]

Did it give u the check engine light?

[@lifethroughnick]

If I want the muffler and cat delete do I just say that at the shop or is it secondary cat?

[@92low74]

Say secondary

[@gear7]

hey man i did a muffler delete on my 2007 328i and i want to take the secondary cats off, do any light come on if you take them off??

[@BIMMERBOII]

No lights for the secondaries.

[@kvlogz1529]

Because i want the pops on mine😭😭

[@pibe8761]

I'll pop it for you haha jk 😂

[@TheNinjaMonkey43]

Is this a full cat delete? Or just secondary cats?

[@locothoughtz6521]

I know this is a bit of a late reply but I just read the video description and it says secondary cat delete :)

[@Max_G43]

Cabin drone ???

[@skan1crucial370]

So check engine light came on because the cat delete ?

[@ShadeTreeBuilt09]

No, this from the secondary cats. You have two sets. So no cel unless you delete the primary ones.

[@thebeastdragon2578]

Hey I know I’m late to the video but I was wondering how many codes it throws. These cars have lots of sensors. I’m looking at doing this so does it throw codes Bc you did this etc?

[@BIMMERBOII]

It didn't throw any codes from the muffler delete or the cat delete. When you start messing with the cats and O2 sensors is when it starts throwing codes and errors

[@thebeastdragon2578]

Lemme tell you I did this today and it’s niceeee

[@thebeastdragon2578]

Thank you for the video

[@BIMMERBOII]

@@thebeastdragon2578 haha I'm glad you found my video helpful! Enjoy that beautiful sound

[@thebeastdragon2578]

The pops man. Ridiculous

[@crzylvnjay]

does ur csr have a 3.0 in-line 6?

[@MN_003]

So you deleted the muffler and secondary cat but left the resonator?

[@user-iv2df5ed4y]

ya

[@cobrafied]

mid muffler delete too?

[@BIMMERBOII]

The Crazy Fisherman no resenator is still in

[@viniciusrochafaria6936]

Did u delete resonator too?

[@dominik6799]

What size tips are those

[@savethedsms2449]

if i do this setup to my 330I and delete the resonator will it be louder without the resonator?

[@BIMMERBOII]

It will be more raspy. That's the purpose of the resonator. Maybe a bit louder.

[@m0hawkm0nk3y]

@@BIMMERBOII would you say that’s a good thing? Or no😂 I have. 2017 330i and I’ve tooken off the muffler and resonator but I think I wanna do cats next I love how it popped a lot more in the video

[@eike599]

hey brother, i got the exact same bmw as you and I just got my secondary cats taken off like 3 hours ago but it doesn't pop or burble anywhere near as much as yours does and i was in sport mode. any ideas as to why??

[@BIMMERBOII]

Hey dude! Hmm im not sure to be honest. To make mine pop the way it does there's like a few tricks I guess you can call them to make it sound that way. The sweet spot is around like 3.5k on the RPM range and I kinda tap. Maybe I'll make a Video on it if you'd like.

[@joelopez7589]

Same i got the same thing done to mines, my second day now but its been really cold outside where i live so idk if that has anything to do with it? Or does it have sorta of a break in period if that makes any sense idk lol

[@BIMMERBOII]

@@joelopez7589 I hear ya. I'm not sure tbh I'm in Florida so it's cold like 2 weeks out of the year so idk how that would affect it. But seeing as alot of peoples don't pop as much as mine so I'll make a Video of what I do to make it pop soon. 👍🏻

[@eike599]

update on mine, it will start to pop, give it some time bro :)

[@joelopez7589]

@@eike599 thanks man i figured it out it was the fact i didnt have my car in sport mode when i did and drove it that way it pops when decelerating 👍😊

[@reelokated212]

Your SES light is on, how do you pass inspection with this setup?

[@BIMMERBOII]

No inspections in Florida :)

[@reelokated212]

BIMMER BOII oh man you guys are lucky! Im only going to do a muffler delete for the inspection reasons. Otherwise id fail inspection in nyc

[@BIMMERBOII]

You can get the lighted tuned out with a proper tune. But yes. Very fortunate.

[@davidpineda645]

so resonator is on?

[@joelopez7589]

Did you do anything else besides the cat and muffler delete or is just straight up that?

[@BIMMERBOII]

Joe Lopez just that

[@joelopez7589]

BIMMER BOII also did any codes appear when you only did the muffler delete ?

[@Esburito]

I didnt get any when i cut mine off to my 2007 328i, youll be fine

[@joelopez7589]

@@Esburito thanks

[@fernate1234]

with both mods together, does it only pop excessively in sport? or its like that normal Drive too?

[@BIMMERBOII]

fernate1234 doesnt really happen at all in regular drive mode.

[@joelopez7589]

@@BIMMERBOII so it has to be in sport mode then?? Cause ive been trying to figure out why mine doesnt pop much it does but not like yours and i have a muffler and secodary cat delete as well but havent really tried to drive my car much in sport mode

[@prod.worries]

@@joelopez7589sport mode and tap the pedal at 3/5k rpm

[@jimmyyang8261]

Any drone?

[@engelous]

any downsides to getting a cat delete??

[@justinbp6198]

Emissions test

[@Niggawin_z33]

will it pass smog if i do a muffler,resonator, and secondary cat delete?

[@BIMMERBOII]

Brandon Nguyen i honestly dont know. I dont have any emissions testing in FL

[@jameswood2996]

u cant pass smog with a secondary cat delete

[@Esburito]

Do you get droning on the hwy?

[@BIMMERBOII]

Yea a bit.