[Derek80]

Hi guys, I just had my friend installed the AWE midpipe and exhaust into my 2017 440ix gc.
Before my friend install the AWEs for me, my car had:

• JB4
• BMS Intake
• Er catless downpipe

With the Er catless and stock exhaust, I can hardly hear any crackle pop sounds, so I was planning to swap the Er catless to CG precision DS-1, but there was a fitment issue on DS-1 (one of the o2 sensors cant be screwed in). So, we just install the AWE midpipe and exhaust on with Er catless.

After the install, the crackle, pop sound is amazing, but the cold start is way too loud. I feel like my neighbors are going to kill me someday lol , and I would like to lower the volume down a bit, but still keep the crackle/pop sound.
Any recommendations to lower the volume?
I don't know if a catted downpipe is going to help lowering it? Or I just change the downpipe to stock (kinda dont want to loss those powers)?
It's a leased car, so I want to keep the OEM exhaust in one piece.
Thanks guys.

[G.Newt]

Install resonators.

I just got my first noise complaint today, and it was at fucking 1PM in the afternoon. I might have to go this route to quiet it down as well.

[Antec800]

Install a dynomax bullet resonator from summit I’ve tried many different setups since I installed my catless Downpipe, you deff need a resonator in place unless you want to sound like a Honda

[jalkster]

Our cold starts are very brutal... but doing anything to quiet it down will also have an effect on the back fires.

I used to run AWE axelback/ER catless DP/stock midpipe and it sounded really good. Compared to the setup I have now which is Meisterschaft (essentially straight pipe when open valve) the full-throttle-let-off explosions were quite similar. The main difference is the lower rpms crackles in Sport mode.

I still got the lower rpm gargles with my AWE setup they just werent quite as snappy as my open Meisterschaft if that makes sense. That set up was just over all less brutal, but still sounded amazing imo.

So to quiet it down id either throw the stock midpipe back on, or weld on a resonator to keep that wide diameter throughout. I can get you a video of my AWE set up if youd like.

EDIT... I just realized you said AWE midpipe not catback... lol. hope this still helps

[Derek80]

Originally Posted by G.Newt

Install resonators.

I just got my first noise complaint today, and it was at fucking 1PM in the afternoon. I might have to go this route to quiet it down as well.

That probably is the only way

[Derek80]

Originally Posted by Antec800

Install a dynomax bullet resonator from summit I’ve tried many different setups since I installed my catless Downpipe, you deff need a resonator in place unless you want to sound like a Honda

At the moment, my car does sound like a Honda lol. Is the resonator you installed lower the volume of backfire sound as well?

[Derek80]

Originally Posted by jalkster

Our cold starts are very brutal... but doing anything to quiet it down will also have an effect on the back fires.

I used to run AWE axelback/ER catless DP/stock midpipe and it sounded really good. Compared to the setup I have now which is Meisterschaft (essentially straight pipe when open valve) the full-throttle-let-off explosions were quite similar. The main difference is the lower rpms crackles in Sport mode.

I still got the lower rpm gargles with my AWE setup they just werent quite as snappy as my open Meisterschaft if that makes sense. That set up was just over all less brutal, but still sounded amazing imo.

So to quiet it down id either throw the stock midpipe back on, or weld on a resonator to keep that wide diameter throughout. I can get you a video of my AWE set up if youd like.

EDIT... I just realized you said AWE midpipe not catback... lol. hope this still helps

Hmm can I have the link for your awe setup? If I want to use AWE exhaust, I’m gonna have to cut my stock mid pipe ：（ Btw, is install a catted downpipe gonna help lowering the volume? Thanks.

[jalkster]

Originally Posted by Derek80

Hmm can I have the link for your awe setup? If I want to use AWE exhaust, I’m gonna have to cut my stock mid pipe ：（ Btw, is install a catted downpipe gonna help lowering the volume? Thanks.

A catted DP will lower volume a little but over all the tone will be more refined. I have it on my instagram @f30canon

[Derek80]

Originally Posted by jalkster

A catted DP will lower volume a little but over all the tone will be more refined. I have it on my instagram @f30canon

Ah, I’ll check it once I got home. Do you think with my setup switch to a catted DP, the volume will be lower into acceptable range? I’m thinking an ER catted. Thanks

[jalkster]

Originally Posted by Derek80

Ah, I’ll check it once I got home. Do you think with my setup switch to a catted DP, the volume will be lower into acceptable range? I’m thinking an ER catted. Thanks

From the people ive talked to the DS1 catted is the way to go. It sounds great and guarantees no CEL unlike the ER, even though that doesnt seem to be a concern since youre catless now. and I dont want to give you invalid information, Im really not sure how much quieter the high flow cat would make it, all cars and exhaust setups are different. It would be noticeable though, for your neighbors im not too sure haha

[Derek80]

Originally Posted by jalkster

From the people ive talked to the DS1 catted is the way to go. It sounds great and guarantees no CEL unlike the ER, even though that doesnt seem to be a concern since youre catless now. and I dont want to give you invalid information, Im really not sure how much quieter the high flow cat would make it, all cars and exhaust setups are different. It would be noticeable though, for your neighbors im not too sure haha

Haha, thanks, my neighbors probably think me from more annoying to annoying. I had the DS1, but one of my o2 sensor just won’t screw in. Getting bad first impression of them. Anyway, I really like the backfire sounds, and hope to keep it that way, I’m contacting ECS atm, see what they say about my DP.

[G.Newt]

I can chime in on the CG DS-1. It's loud AF. My cold starts, as Jalkster mentioned, are really brutal. Once I reach 3k RPM, it gets kinda raspy, but I don't think it sounds like a Honda. Has a slightly deep tone, nice gargles, LOUD/fast pops and bangs. My non-car friend said it sounds like a race car. My car friends all think it sounds good, just too loud.

Side note: I also have AWE full catback. The midpipe made a big difference, and the muffler is so small I think the only thing it does is cancel out drone. It pretty much sounds straight-piped.

Odd that you didn't get proper o2 fitment, I think you're the first person on here that has had that issue. My muffler shop/tech didn't even need the $20 gasket some people have needed.

[Antec800]

A aftermarket bullet style resonator will get rid of the higher pitched noises(rasp) while keeping most of the pops and cracks the oem one on the Car gets rid of most of pops I’m guessing there is more sound deadening material then the dynomax resonator I currently have

[Derek80]

Originally Posted by G.Newt

I can chime in on the CG DS-1. It's loud AF. My cold starts, as Jalkster mentioned, are really brutal. Once I reach 3k RPM, it gets kinda raspy, but I don't think it sounds like a Honda. Has a slightly deep tone, nice gargles, LOUD/fast pops and bangs. My non-car friend said it sounds like a race car. My car friends all think it sounds good, just too loud.

Side note: I also have AWE full catback. The midpipe made a big difference, and the muffler is so small I think the only thing it does is cancel out drone. It pretty much sounds straight-piped.

Odd that you didn't get proper o2 fitment, I think you're the first person on here that has had that issue. My muffler shop/tech didn't even need the $20 gasket some people have needed.

Yep, I never heard anyone with this issue

[Derek80]

Originally Posted by Antec800

A aftermarket bullet style resonator will get rid of the higher pitched noises(rasp) while keeping most of the pops and cracks the oem one on the Car gets rid of most of pops I’m guessing there is more sound deadening material then the dynomax resonator I currently have

Sounds nice, do you have video of it?

[Antec800]

No I do not but any aftermarket resonator/bullet muffler will sound close to the same and make the car sound good and get rid of rasp which is the main problem

[Derek80]

Originally Posted by Antec800

No I do not but any aftermarket resonator/bullet muffler will sound close to the same and make the car sound good and get rid of rasp which is the main problem

will definitely look into that, also I'm planning to switch to a catted downpipe.

[Mike@N54Tuning.com]

Originally Posted by Derek80

will definitely look into that, also I'm planning to switch to a catted downpipe.

The catted will definitely help with what you are after

Mike

[Derek80]

Originally Posted by Mike@N54Tuning.com

The catted will definitely help with what you are after

Mike

Can't wait to get that

[bmw22915]

Originally Posted by jalkster

From the people ive talked to the DS1 catted is the way to go. It sounds great and guarantees no CEL unlike the ER, even though that doesnt seem to be a concern since youre catless now. and I dont want to give you invalid information, Im really not sure how much quieter the high flow cat would make it, all cars and exhaust setups are different. It would be noticeable though, for your neighbors im not too sure haha

+1 to DS1

[DEmrulai]

Originally Posted by jalkster

Our cold starts are very brutal... but doing anything to quiet it down will also have an effect on the back fires.

I used to run AWE axelback/ER catless DP/stock midpipe and it sounded really good. Compared to the setup I have now which is Meisterschaft (essentially straight pipe when open valve) the full-throttle-let-off explosions were quite similar. The main difference is the lower rpms crackles in Sport mode.

I still got the lower rpm gargles with my AWE setup they just werent quite as snappy as my open Meisterschaft if that makes sense. That set up was just over all less brutal, but still sounded amazing imo.

So to quiet it down id either throw the stock midpipe back on, or weld on a resonator to keep that wide diameter throughout. I can get you a video of my AWE set up if youd like.

EDIT... I just realized you said AWE midpipe not catback... lol. hope this still helps

Do you have a video how it sounded

[jalkster]

Originally Posted by DEmrulai

Do you have a video how it sounded

yes... just for recap this is ER DP, stock midpipe with resonators, and AWE axelback