[kianf22]

Anyone here have the remus non resonated system on their m240i? I've been thinking about the addition of a catted downpipe (either CG or AA) but am worried about the cold start. Anyone know how much louder a catted downpipe would make my cold start ? Thanks!

[zutal]

i have decat and akrapovic evolution cat-back sounds amazing, the cold start is loud but you can disable with bootmod3 or mhd. No drone

[mike@x-ph.com]

Originally Posted by kianf22

Anyone here have the remus non resonated system on their m240i? I've been thinking about the addition of a catted downpipe (either CG or AA) but am worried about the cold start. Anyone know how much louder a catted downpipe would make my cold start ? Thanks!

catted + non-res REMUS will sound great in my opinion.

Cold start is louder than stock but won't be close to how loud it is with catless.

I added catted DP on my REMUS setup, cold start increase is noticeable but not obnoxious

[kianf22]

Originally Posted by zutal

i have decat and akrapovic evolution cat-back sounds amazing, the cold start is loud but you can disable with bootmod3 or mhd. No drone

Don't plan on flashing anytime soon

[kianf22]

Originally Posted by mike@x-ph.com

catted + non-res REMUS will sound great in my opinion.

Cold start is louder than stock but won't be close to how loud it is with catless.

I added catted DP on my REMUS setup, cold start increase is noticeable but not obnoxious

My Cold start right now is just quiet enough to where I can leave my house late at night without getting any complaints or waking the neighborhood. I love the sound of my remus system cold but once the car warms up the exhaust quiets significantly. (Especially 3-6 gear) Hoping that the catted downpipe would help with that but concerned that I won't be able to leave my house early in the morning or late at night without waking everyone up :

[kriszty]

Originally Posted by kianf22

My Cold start right now is just quiet enough to where I can leave my house late at night without getting any complaints or waking the neighborhood. I love the sound of my remus system cold but once the car warms up the exhaust quiets significantly. (Especially 3-6 gear) Hoping that the catted downpipe would help with that but concerned that I won't be able to leave my house early in the morning or late at night without waking everyone up :

catted downpipe or catless would not help, cold start is always louder with either of them. soundwise i think the downpipe is needed with the B58 cars. if you are worried about the sound, then better no downpipe...

[kianf22]

Originally Posted by kriszty

catted downpipe or catless would not help, cold start is always louder with either of them. soundwise i think the downpipe is needed with the B58 cars. if you are worried about the sound, then better no downpipe...

I know it will be louder, I am trying to gauge if it would be TOO LOUD for my liking though as I already have a non-resonated catback exhaust, but I understand it's hard to convey that over a forum lol.

[dradernh]

Originally Posted by kianf22

I understand it's hard to convey that over a forum lol.

That's exactly right, isn't it. The issue with a lot of modifications is that you have to try them to decide if you like them. And therein lies the rub. Believe me, I know!

Information from other forum members, whether in the form of video/audio or text, is never more than an introduction into the reality of what a mod might mean for you.

My own experience is that it's a combination of doing research on forums (and, much better, if you have access to them – qualified shops) and trying things out (while being willing to accept the expense of failed experiments) that will eventually enable you to become knowledgeable enough to successfully navigate your way through all of the options.

The bottom line is that the people with the most hard-won knowledge are those who have spent the time, money, and energy to learn what works and what doesn't work. Members of forums like this one would be wise to listen to those who have traveled that road before them. Just my 2¢.

[zutal]

just go for it, if its too loud ,always can disable the cold start with bootmod3 or mhd

[kianf22]

Originally Posted by zutal

just go for it, if its too loud ,always can disable the cold start with bootmod3 or mhd

Won't be looking to flash tune any time soon as my car is a 2020 MY with less than 5k miles. It's very hard for me to surrender my warranty all at once to BM3. My dealer is fairly lenient with mods as long as they do not cause a CEL. (That's why I have a catback and intake and am considering a catted downpipe.)They however are not lenient on tuning. Most I could do is push my luck with a jb4 and that won't allow me to turn off the cold start. AA catted and CG precisión downpipes both cost around $800-1000 so I'm trying to make sure of my decision.

[kianf22]

Originally Posted by dradernh

That's exactly right, isn't it. The issue with a lot of modifications is that you have to try them to decide if you like them. And therein lies the rub. Believe me, I know!

Information from other forum members, whether in the form of video/audio or text, is never more than an introduction into the reality of what a mod might mean for you.

My own experience is that it's a combination of doing research on forums (and, much better, if you have access to them – qualified shops) and trying things out (while being willing to accept the expense of failed experiments) that will eventually enable you to become knowledgeable enough to successfully navigate your way through all of the options.

The bottom line is that the people with the most hard-won knowledge are those who have spent the time, money, and energy to learn what works and what doesn't work. Members of forums like this one would be wise to listen to those who have traveled that road before them. Just my 2¢.

Appreciate your reply and a lot of your points make sense. Just started this thread to see how many others have gone with a non resonated catback and catted downpipe. By talking to a few people I may be able to find out if the cold start will be unbearable or not, but I understand that I have to do it for myself to REALLY find out. It would help if some people came on here saying that they had this combo but later took it off because of the cold start, but no one has said anything about that yet. If the cold start is too much, I know I will be forced to take it off, so trying to avoid the headache of purchasing, installing, and reselling for a fraction but I get it, you have to pay to play Just trying to pick some brains here

[MrShowOff]

Originally Posted by kianf22

Appreciate your reply and a lot of your points make sense. Just started this thread to see how many others have gone with a non resonated catback and catted downpipe. By talking to a few people I may be able to find out if the cold start will be unbearable or not, but I understand that I have to do it for myself to REALLY find out. It would help if some people came on here saying that they had this combo but later took it off because of the cold start, but no one has said anything about that yet. If the cold start is too much, I know I will be forced to take it off, so trying to avoid the headache of purchasing, installing, and reselling for a fraction but I get it, you have to pay to play Just trying to pick some brains here

My 2017 M240i Xdrive has the Dinan Stage 1 Tune, Dinan CAI, Dinan High Flow Exhaust and the Dinan Mid Pipe.
I'm really considering adding a Downpipe. Not going catless...don't want the smell or the CEL!
Not gonna go cheap but I'm not gonna spend $1500.
It already sounds great so a little louder is just a plus.
I want more performance, power, Hp and torque!
I'm leaning toward the 200 CEL option. What kind of Hp and torque increase can I expect? What are your thoughts?

[kianf22]

Originally Posted by MrShowOff

My 2017 M240i Xdrive has the Dinan Stage 1 Tune, Dinan CAI, Dinan High Flow Exhaust and the Dinan Mid Pipe.
I'm really considering adding a Downpipe. Not going catless...don't want the smell or the CEL!
Not gonna go cheap but I'm not gonna spend $1500.
It already sounds great so a little louder is just a plus.
I want more performance, power, Hp and torque!
I'm leaning toward the 200 CEL option. What kind of Hp and torque increase can I expect? What are your thoughts?

Not related to this thread and there's many open threads you could post your question at but to be brief you won't see much power increase with your dinan tune to my understanding. JB4 or better, a flash like MHD or BM3 will allow you to take advantage of the power gains. (Will also allow you to turn off cold start. Look into a flash if you want a downpipe, i'm not because my car is new and I would like to keep the warranty for as long as I can.) You may hear a turbo spool noise and the car with be louder overall. Turbo should spool faster too. But again this thread is about how it would affect the loudness of cold start.

[NISFAN]

Can I ask why you think you need a high flow Cat on an otherwise standard tune? What are you expecting to get from it?

[kianf22]

Originally Posted by NISFAN

Can I ask why you think you need a high flow Cat on an otherwise standard tune? What are you expecting to get from it?

Love the sound of my car with the remus system cold, but once it warms up it's much quieter. I'm doing it mainly for the sound at the moment. (Turbo spool noises, louder overall) Looking to improve sound once the car warms up but trying not to make my cold start stupid loud. I also plan on installing a JB4 with it later on for power gains.

[NISFAN]

Originally Posted by kianf22

Love the sound of my car with the remus system cold, but once it warms up it's much quieter. I'm doing it mainly for the sound at the moment. (Turbo spool noises, louder overall) Looking to improve sound once the car warms up but trying not to make my cold start stupid loud. I also plan on installing a JB4 with it later on for power gains.

Remus does sound good. A sports cat will open the sound up without destroying the tone like a decat does. Sadly the sound insulation is too good on these cars, if that's at all possible.

I'm not a fan of JB4 on the latest version of DME, it could fool the older version but this new one is too clever for JB4 to work well. You are much better off with a flash tune, which by the way increases the sound volume quite a bit. Nothing like an extra 60-90 horses to ramp up the volume.

[kianf22]

Originally Posted by NISFAN

Remus does sound good. A sports cat will open the sound up without destroying the tone like a decat does. Sadly the sound insulation is too good on these cars, if that's at all possible.

I'm not a fan of JB4 on the latest version of DME, it could fool the older version but this new one is too clever for JB4 to work well. You are much better off with a flash tune, which by the way increases the sound volume quite a bit. Nothing like an extra 60-90 horses to ramp up the volume.

Yeah hopefully a catted downpipe like CG or AA will open the volume up a little without making my cold start obnoxiously loud. Haha I know I have been lectured many times about flash tuning. Unfortunately because my car is new (2020 MY <5k miles) I will not be flashing until later on in it's life. JB4 seems like the safest bet for me now in terms of warranty. Flash will instantly void it at my dealer. May I ask you to elaborate on what you mean by the new DME being too smart for JB4 to work properly? I was planning on getting one so this will help lots. Thanks for your input!

[zutal]

Originally Posted by kianf22

Love the sound of my car with the remus system cold, but once it warms up it's much quieter. I'm doing it mainly for the sound at the moment. (Turbo spool noises, louder overall) Looking to improve sound once the car warms up but trying not to make my cold start stupid loud. I also plan on installing a JB4 with it later on for power gains.

you have the resonated emmus catback or the race?? the remus non resonated sounds great when warm up , i think if u dont wanna tune the car better stay away from downpipes.

[kianf22]

Originally Posted by zutal

you have the resonated emmus catback or the race?? the remus non resonated sounds great when warm up , i think if u dont wanna tune the car better stay away from downpipes.

I have the non resonated. Sounds great until you push you the car and it warms up, then it is much quieter.

[Kobylash]

I have the full Remus catback with the racing midpipe and will be installing a VRSF catless downpipe today. I'm concerned about the volume level as well but I figured there would be only one way to find out. I'll report back with my thoughts.

[kianf22]

Originally Posted by Kobylash

I have the full Remus catback with the racing midpipe and will be installing a VRSF catless downpipe today. I'm concerned about the volume level as well but I figured there would be only one way to find out. I'll report back with my thoughts.

Interested to hear your thoughts on the combo once you install! I was looking to pair a Catted downpipe to my remus non resonated system, but this will still give an idea

[WolfGTI]

Now I have the AA catted dp with the resonated Remus. It's got good volume and tone without being conspicuous.

I previously had the AWE with the AA dp and it sounded awesome, but was too loud with cold start and in continuous driving, but under WOT and when downshifting it was glorious.