[NNJCarGuy]

Greetings everyone!

Welp, I finally finished some mods on my car.

1. Removed the resonators and installed an x-pipe
2. Removed the stock muffler tips and replaced them with polished stainless steel 4" double walled tips
3. Replaced the rear diffuser with a gloss black M5 style diffuser
4. Stage 1 BM3 tune

The resonator delete was pretty straight forward and allowed the engine note to come through better. With the tune the pops and crackles after the tune are definitely more pronounced.

VIDEO CLIP:

The tip swap was a challenge. Most shops declined the task. I finally found a shop in Red Bank NJ, Bradley's Auto Service. https://bradleysauto.com/services/cu...haust-systems/

These guys nailed it with the install, the final result completely transformed the rear of my car.
The problem was that the expander couldn't be used due to the unique rectangular size of the OEM outlets coming from the muffler. In the end the only way to meet it up with the tips (inlet 2.25") was to leave a gap between the tips and the outlet. Then, they were reluctant to decrease the inlet side of the tips because of the fear of the structural integrity and possibly cracking. I was ok with that considering it would never be seen when on the ground. As I walk away I can't stop looking back at it!

Gary was a pleasure to work with as well. If you're in the tri-state area and would like to do this to your car, I highly recommend giving them a shot.

Rear diffuser. This was pretty straight forward. I'm not so happy with the final fit where it lines up with the bumper but for $190 you get what you pay for. I'm currently looking to find a fix for that.

The tune, yeah... This tune woke up my car to the next level. Nothing can be said that wasn't already said on this forum. In comfort the car is quiet and "normal-ish", in sport plus the beast comes out. My fiancé described the 0-60 with launch control as terrifying! That was the reaction I was searching for!

The final side by side with the new Camaro gives a perspective of the outlet side comparison.

Enjoy the pics and have no problem answering any questions in regards to my mods.

[Zero_Cool]

What did the shop charge you for the exhaust work? It looks and sounds great!

[NNJCarGuy]

Originally Posted by Zero_Cool

What did the shop charge you for the exhaust work? It looks and sounds great!

Thanks, $300, worth every penny IMO,

[Joe-BMW33]

Nice post and nice work. I would love to swap in some double round tips (black for me) but it doesn't appear you can unless you want to change out the exhaust to get them to sit right. I do think if you went with black tips (like the Dinan ones), the space around your tips would be less noticeable. I'm not a fan of the pops or anything that draws unnecessary attention, but to each his own, I am sure it fits right in on The Shore, just kidding!

Your car looks very tastefully done and clean. The diffuser looks pretty good to me, but I am sure wherever it is off is like a magnet to your eyes.

[NNJCarGuy]

Originally Posted by Joe-BMW33

Nice post and nice work. I would love to swap in some double round tips (black for me) but it doesn't appear you can unless you want to change out the exhaust to get them to sit right. I do think if you went with black tips (like the Dinan ones), the space around your tips would be less noticeable. I'm not a fan of the pops or anything that draws unnecessary attention, but to each his own, I am sure it fits right in on The Shore, just kidding!

Your car looks very tastefully done and clean. The diffuser looks pretty good to me, but I am sure wherever it is off is like a magnet to your eyes.

Thanks. Yes, it is a magnet to my eyes - I will figure it out. Yeah, I went with the polished stainless because I figured if I'm going to do it I'd rather it not have it disappear and blend in with the new gloss black rear diffuser. pops and crackles.. I didn't like it at all until I heard a friends X3 M340 and M850 with the pops and crackles. I like the ability to turn it off completely in comfort or individual modes (stealth mode) In sport plus you hear it all!

As far as it lining up, I think it came out on point - see photo attached. I made them crazy making sure it all lined up right. You can't see from the photo here however there is a space between the pipes and the spaces are symmetrical from the left to right side.

[Joe-BMW33]

Originally Posted by NNJCarGuy

Thanks. Yes, it is a magnet to my eyes - I will figure it out. Yeah, I went with the polished stainless because I figured if I'm going to do it I'd rather it not have it disappear and blend in with the new gloss black rear diffuser. pops and crackles.. I didn't like it at all until I heard a friends X3 M340 and M850 with the pops and crackles. I like the ability to turn it off completely in comfort or individual modes (stealth mode) In sport plus you hear it all!

As far as it lining up, I think it came out on point - see photo attached. I made them crazy making sure it all lined up right. You can't see from the photo here however there is a space between the pipes and the spaces are symmetrical from the left to right side.

That looks really tight. I am sure you drove them crazy, I would have done the same. $300 bucks is a deal. I thought you said in your original post that they had to leave an unwanted space at the top, so I thought they were sitting lower than the pics I have seen of the Dinan Free Flow all in one unit.

https://www.dinancars.com/products/e.../D660-0075-BLK

[NNJCarGuy]

Originally Posted by Joe-BMW33

That looks really tight. I am sure you drove them crazy, I would have done the same. $300 bucks is a deal. I thought you said in your original post that they had to leave an unwanted space at the top, so I thought they were sitting lower than the pics I have seen of the Dinan Free Flow all in one unit.

https://www.dinancars.com/products/e.../D660-0075-BLK

You're right, it is pretty tight. I just took a photo of them (see attached) in my garage. Given the restrictions given with the oem pipes coming out from the muffler, along with the smaller opening with the new diffuser this was the best we could do. Funny in person on the road it doesn't look as tight as this photo.

I was going to get the Dinan muffler and mid. I decided to save a LOT of money and do this mod instead. I figured at the end of the day I didn't loose too much in the event it failed and I didn't like the end result.

The unwanted space was between the oem muffler and the 2.25 inlet of the new tips. I have to say that the 4" outlets means business!

[Joe-BMW33]

Originally Posted by NNJCarGuy

You're right, it is pretty tight. I just took a photo of them (see attached) in my garage. Given the restrictions given with the oem pipes coming out from the muffler, along with the smaller opening with the new diffuser this was the best we could do. Funny in person on the road it doesn't look as tight as this photo.

I was going to get the Dinan muffler and mid. I decided to save a LOT of money and do this mod instead. I figured at the end of the day I didn't loose too much in the event it failed and I didn't like the end result.

The unwanted space was between the oem muffler and the 2.25 inlet of the new tips. I have to say that the 4" outlets means business!

I hear you on the Dinan offering. I think the entire system with x-pipe is almost $4,000 not including labor to install.

There just something about me that doesn't want to molest the system unless it's going with a credible replacement and that ain't gonna happen for $5,000 ish installed. It sounds like a resonator delete would be the closest to what I am looking for which is just a bit deeper and no pops and bangs. I think the kids call it "burble".

I just can't bring myself to chopping up my system. I know I'm in the minority and it's not that big of a deal.

What you have done is tasteful. I would swap my tips out for doubles in two seconds if it were a straight forward swap.

[NNJCarGuy]

Originally Posted by Joe-BMW33

I hear you on the Dinan offering. I think the entire system with x-pipe is almost $4,000 not including labor to install.

There just something about me that doesn't want to molest the system unless it's going with a credible replacement and that ain't gonna happen for $5,000 ish installed. It sounds like a resonator delete would be the closest to what I am looking for which is just a bit deeper and no pops and bangs. I think the kids call it "burble".

I just can't bring myself to chopping up my system. I know I'm in the minority and it's not that big of a deal.

What you have done is tasteful. I would swap my tips out for doubles in two seconds if it were a straight forward swap.

Thank you. I hear yua man. One reason I purchased rather than leased was so that I can modify her any way I wanted. It looks like you and I have the same year and car.

It sounds like the res delete is the way to go for you. After that is was a bit deeper and you can hear the burbles a little more pronounced.

[Joe-BMW33]

Originally Posted by NNJCarGuy

Thank you. I hear yua man. One reason I purchased rather than leased was so that I can modify her any way I wanted. It looks like you and I have the same year and car.

It sounds like the res delete is the way to go for you. After that is was a bit deeper and you can hear the burbles a little more pronounced.

For sure and I get to see what my car would look like with double tips and Cerium Gray delete if I want to change it up at some point.

You do any tunes or plan to? I did the Dinan thing.

[NNJCarGuy]

Originally Posted by Joe-BMW33

For sure and I get to see what my car would look like with double tips and Cerium Gray delete if I want to change it up at some point.

You do any tunes or plan to? I did the Dinan thing.

I did the BM3 Stage 1 with 93 octane. That woke her up tremendously. The power delivery is amazing now, not that it was weak before. Now my wife calls it terrifying during launch control - worth every penny for that alone! LOL

[ksoze]

Originally Posted by Joe-BMW33

I hear you on the Dinan offering. I think the entire system with x-pipe is almost $4,000 not including labor to install.

I am going the Dinan route, as I did with the tune 3 years go on my '18. Yes, it's expensive. But in the scheme of things, not really on a $92K list car and my dealer sells and installs and no fit issues.

Only challenge now is the supply chain issues - ship dates continue to be pushed back (now 7/15).

[Joe-BMW33]

Originally Posted by NNJCarGuy

I did the BM3 Stage 1 with 93 octane. That woke her up tremendously. The power delivery is amazing now, not that it was weak before. Now my wife calls it terrifying during launch control - worth every penny for that alone! LOL

Nice! I don't have the balls to try launch control and I didn't have the balls to do BM3 for fear of screwing my my warranty. So given I am not the profile to launch, Dinan S1 was enough for me. What is crazy is that these cars are such beasts stock that I felt compelled to sink another $2,200 into it for the S1 installed.

[Joe-BMW33]

Originally Posted by ksoze

I am going the Dinan route, as I did with the tune 3 years go on my '18. Yes, it's expensive. But in the scheme of things, not really on a $92K list car and my dealer sells and installs and no fit issues.

Only challenge now is the supply chain issues - ship dates continue to be pushed back (now 7/15).

Yeah, I hear you and if I planned on having this car forever I would not hesitate, but history shows with me I won't have it by the end of 2023 or early 2024 when the new 5 series comes out. LCI G30 lifecycle should end with the 2023 MY if not 2022.

Sinking $5,000 into it for a Dinan exhaust ain't going to get me peanuts on the trade up.

But on you rationalization that because it is a $92,000 car that another $5,000 should be a shake of the shoulders, one can make the claim that it is a $92,000 car that needs nothing to most people and in reality, it really does need nothing.

On supply chain - I can't even get my spacers to ship!

[NNJCarGuy]

Ha! Great points. I always have the best of intentions "I plan on keeping this car for a long time" With my track record that may not happen, but it sure would be nice to own something outright eventually. My factory warranty is long gone, I'm at 60k. My personal warranty is good until 100K.

I do have my eyes on the next gen 5. With all honesty my goal car is the M8 Comp - at 50 years young, so many cars, such little time! LOL

[ksoze]

Originally Posted by Joe-BMW33

Sinking $5,000 into it for a Dinan exhaust ain't going to get me peanuts on the trade up.

Sinking funds into most options won't make much a dent in the wholesale price. I normally only keep cars during the lease period, but this one was a keeper, hence the post-sale option adds. I have other recent automotive additions to alleviate the desire to trade up to the next version of the 5 series for now.

As with all of this stuff, it only makes sense to the owner. On paper, spending on these cars is financially suspect anyway, but you only live once.

[Joe-BMW33]

Originally Posted by NNJCarGuy

Ha! Great points. I always have the best of intentions "I plan on keeping this car for a long time" With my track record that may not happen, but it sure would be nice to own something outright eventually. My factory warranty is long gone, I'm at 60k. My personal warranty is good until 100K.

I do have my eyes on the next gen 5. With all honesty my goal car is the M8 Comp - at 50 years young, so many cars, such little time! LOL

We are on the same page again. My dream car is an M5 Comp though. It took me a lot of cars to finally come true to myself. Don't get me wrong, I have to fight the urge to do shit when the car is new. My last one was a mistake and I only had it for a year. I estimate I put $5,000 into it that the next owner will enjoy but was money out the window. Ceramic, extra years of warranty, etc. Trying not to do this with this one. Sometimes I should leave well enough alone. I'll save the money for the M5C! I did do the $2,000 tune though so I guess I'm not off to a great start😂. Spacers next but that peanuts.

[Joe-BMW33]

Originally Posted by ksoze

Sinking funds into most options won't make much a dent in the wholesale price. I normally only keep cars during the lease period, but this one was a keeper, hence the post-sale option adds. I have other recent automotive additions to alleviate the desire to trade up to the next version of the 5 series for now.

As with all of this stuff, it only makes sense to the owner. On paper, spending on these cars is financially suspect anyway, but you only live once.

See my last post. I don't think about a $5,000 exhaust as an option but more a nice to have. It's not about the absolute dollar with me, it's about self control. We will see! I also have a few other cars, but it's always the latest one that gets the attention because it's new. May not be the king of the stable, but it's a new toy.

[choppedliver]

My POV is different. I'll likely keep my 2020 for 7+ years before I may go electric. I don't see the M5C as desirable mainly because the exhaust sounds shit (weird mix of 6/8 cylinder) due to the crossover manifold. I wanted a V8 that sounds like a V8 and the M550i does that in spades.

I've done res-delete (cheap as chips), and will lower, spacers and then stage 2 once out of warranty to get some more performance. I reckon a 2020 could be a low-mid 10 car easily with a stage 2 which should be plenty.

[NNJCarGuy]

Originally Posted by choppedliver

My POV is different. I'll likely keep my 2020 for 7+ years before I may go electric. I don't see the M5C as desirable mainly because the exhaust sounds shit (weird mix of 6/8 cylinder) due to the crossover manifold. I wanted a V8 that sounds like a V8 and the M550i does that in spades.

I've done res-delete (cheap as chips), and will lower, spacers and then stage 2 once out of warranty to get some more performance. I reckon a 2020 could be a low-mid 10 car easily with a stage 2 which should be plenty.

You're right, the M5C doesn't sound as good as ours for sure. Stage 2 with catless downpipes on a 2020 should be pushing what, close to 700hp?

[choppedliver]

Originally Posted by NNJCarGuy

You're right, the M5C doesn't sound as good as ours for sure. Stage 2 with catless downpipes on a 2020 should be pushing what, close to 700hp?

Thanks. Apart from sound an M5C is double the price of an M550i pure in Australia which is Tesla Plaid money.

Rktunes stage 2 with intakes as well did 640whp which has to be over 700hp crank. Add meth injection and I suspect you could get closer to 700hp wheel (unproven). That would make it close to a stage 2 M5. And I’m sure with castles downpipes sounds even better.

[Boosted_8]

I was going to ask about the Aussie markets definition of M550i pure. So far as I can tell it's the M550i X drive still? Just devoid of the big ticket options??