[suby01]

This is for there 2020 M40i B58.

There is a pretty significant price difference in the 2 in my opinion top brands for catted downpipes. VRSF vs Evolution Racewerks. Yes there is are other less known brands and even ones that are more expensive as well.
But for the sake of simplifying it lets stay on the topic of these two brands.

What are some reasons to get one over the other.
I mean I can get a VRSF catted DP add a chargepipe as well and still have a few dollars left over for a gallon of racefuel for the price of 1 ER catted downpipe.
But is the ER that much better to pay a premium? If yes then I am all for it.
Looking for comments as this is driving me nuts.
Also to add I am looking for the "quietest" option of the two.
So if anyone reading this in the future wants the louder option they will also know which way to go as well. Please share your comments.

[freshxdough]

Originally Posted by suby01

This is for there 2020 M40i B58.

There is a pretty significant price difference in the 2 in my opinion top brands for catted downpipes. VRSF vs Evolution Racewerks. Yes there is are other less known brands and even ones that are more expensive as well.
But for the sake of simplifying it lets stay on the topic of these two brands.

What are some reasons to get one over the other.
I mean I can get a VRSF catted DP add a chargepipe as well and still have a few dollars left over for a gallon of racefuel for the price of 1 ER catted downpipe.
But is the ER that much better to pay a premium? If yes then I am all for it.
Looking for comments as this is driving me nuts.
Also to add I am looking for the "quietest" option of the two.
So if anyone reading this in the future wants the louder option they will also know which way to go as well. Please share your comments.

VRSF is a 200cel and will give you a CEL with no tune. I've done a catted downpipe on my 2020. CEL comes back the next day so if you want quieter I think you'd want whichever has more catalytic material like 300cel or 400cel if possible

Cold starts are stupid loud so be aware. I start up in the morning and immediately put into reverse and stay in reverse or drive to put a small load on the engine to bring the RPM out of the loud area. Also I'll hold the brake with left foot and back out and drive out of my drive with right foot to put more load and change the RPM to keep it quieter.

I have a VRSF catted downpipe for a 340i and the angle of the pipe connecting to the exhaust is slightly off maybe 1* or so. I would assume a pipe meant for a G01 will likely have better fitment but am not sure. The VRSF I got was $400 total which is great because I don't have to worry about blowing it out and being out a lot of money. I could put the factory one back in if I please.

Other than cold start I love the extra sound it produced. In parking garages you can hear the spool when driving through and letting off. Burbles and pops are louder and crisper. Upshift burbles are insanely loud at wide open throttle.

To me at $400 and installing myself I'd say it's worth it for the CEL. I drive my car hard and really enjoy the sound a lot more now too.

[dmicah]

Very interesting. This product detail page WRT the ER downpipe also indicates that it's 200 cell, so I assume it would have the same propensity for a CEL.

https://www.bimmerworld.com/Exhaust/...340i-440i.html

[r33_RGSport]

Evolution Racewerks also uses 200 Cells Cat.
Catted downpipe still may throw CEL.

Quality wise, all I can say you get what you paid for.

I have sold plenty of ER downpipes and installed them here and there. Fitment and quality is very good.
Handmade in the USA.

I know because my shop is not too far from them.

[LimiX4m40]

Originally Posted by freshxdough

VRSF is a 200cel and will give you a CEL with no tune. I've done a catted downpipe on my 2020. CEL comes back the next day so if you want quieter I think you'd want whichever has more catalytic material like 300cel or 400cel if possible

Cold starts are stupid loud so be aware. I start up in the morning and immediately put into reverse and stay in reverse or drive to put a small load on the engine to bring the RPM out of the loud area. Also I'll hold the brake with left foot and back out and drive out of my drive with right foot to put more load and change the RPM to keep it quieter.

I have a VRSF catted downpipe for a 340i and the angle of the pipe connecting to the exhaust is slightly off maybe 1* or so. I would assume a pipe meant for a G01 will likely have better fitment but am not sure. The VRSF I got was $400 total which is great because I don't have to worry about blowing it out and being out a lot of money. I could put the factory one back in if I please.

Other than cold start I love the extra sound it produced. In parking garages you can hear the spool when driving through and letting off. Burbles and pops are louder and crisper. Upshift burbles are insanely loud at wide open throttle.

To me at $400 and installing myself I'd say it's worth it for the CEL. I drive my car hard and really enjoy the sound a lot more now too.

I am wondering why you dont dont decode the startup? I had that on my m3 e93 it was the best thing what i did the startup was so fucking loud on extrem hard mod without something and without valves so everytime open also while driving to loud

[freshxdough]

I am wondering why you dont dont decode the startup? I had that on my m3 e93 it was the best thing what i did the startup was so fucking loud on extrem hard mod without something and without valves so everytime open also while driving to loud

Waiting for BM3 tune but have heard the new programming update relocks the DME. Just dealing with it for now and patiently waiting.

[freshxdough]

I've made a few exhaust videos throughout the short ownership with my 2020 X3 M40i. Im not trying to plug my YouTube but feel free to check them out. VRSF Catted Downpipe Cold start and some Revs included. All of the videos are in sport plus when revving

I don't have a professional camera or recording equipment but if anyone wants to know anything about the 2020 M40i let me know


https://www.youtube.com/user/pshean84

[LimiX4m40]

Originally Posted by freshxdough

Waiting for BM3 tune but have heard the new programming update relocks the DME. Just dealing with it for now and patiently waiting.

Okei :-) so than you still have to wait ;p

1 question does bm3 also resolve the decatet error on the car?

[LimiX4m40]

Originally Posted by freshxdough

I've made a few exhaust videos throughout the short ownership with my 2020 X3 M40i. Im not trying to plug my YouTube but feel free to check them out. VRSF Catted Downpipe Cold start and some Revs included. All of the videos are in sport plus when revving

I don't have a professional camera or recording equipment but if anyone wants to know anything about the 2020 M40i let me know


https://www.youtube.com/user/pshean84

So muuch louder than stock with opf now wee hear what a difference it makes

[freshxdough]

Originally Posted by LimiX4m40

So muuch louder than stock with opf now wee hear what a difference it makes

I'm not sure if I understand but just to clarify I am in USA with no OPF.

[suby01]

Originally Posted by freshxdough

I've made a few exhaust videos throughout the short ownership with my 2020 X3 M40i. Im not trying to plug my YouTube but feel free to check them out. VRSF Catted Downpipe Cold start and some Revs included. All of the videos are in sport plus when revving

I don't have a professional camera or recording equipment but if anyone wants to know anything about the 2020 M40i let me know


https://www.youtube.com/user/pshean84

Great vids. Subscribed.

And so Im definitely going ER catted, just holding off for the B58 tuners to unlock the DME. Once the cold start quiet option is available it will make sense to jump on this and also have the potential to clear the CEL.

[Adam X3M40i]

Originally Posted by freshxdough

I've made a few exhaust videos throughout the short ownership with my 2020 X3 M40i. Im not trying to plug my YouTube but feel free to check them out. VRSF Catted Downpipe Cold start and some Revs included. All of the videos are in sport plus when revving

I don't have a professional camera or recording equipment but if anyone wants to know anything about the 2020 M40i let me know


https://www.youtube.com/user/pshean84

Nice! i recently installed my downpipe as well on my x3. Was expecting a lot more burble but can't get it to burble the way i want even with bootmod3

For the downpipe i went with CTS catless downpipe, had them all in my previous car. Always perfect fitment and no issues.

[freshxdough]

Originally Posted by Adam X3M40i

Nice! i recently installed my downpipe as well on my x3. Was expecting a lot more burble but can't get it to burble the way i want even with bootmod3

I'm really surprised that even with bootmod it can't overwrite the DME settings for burble. It should do it no problem if it's changing the fuel maps and overrun setting some decel.. but I'm not a tuner so I don't know anything about how all of this "actually" works

[Adam X3M40i]

Originally Posted by freshxdough

I'm really surprised that even with bootmod it can't overwrite the DME settings for burble. It should do it no problem if it's changing the fuel maps and overrun setting some decel.. but I'm not a tuner so I don't know anything about how all of this "actually" works

I mean don't get me wrong you can make it loud as hell but it seems to only really burble starting at 4.5+ rpms

All my other bmw in the past would burble honestly at any rpm the higher the louder.

[freshxdough]

Originally Posted by Adam X3M40i

I mean don't get me wrong you can make it loud as hell but it seems to only really burble starting at 4.5+ rpms

All my other bmw in the past would burble honestly at any rpm the higher the louder.

How wild does it get with changing the aggression? I mean I can get some loud burbles and pops and it's definitely more defined and louder with the catted downpipe but the logic from the DME is still the same. Just the noise was affected.

[Adam X3M40i]

Originally Posted by freshxdough

How wild does it get with changing the aggression? I mean I can get some loud burbles and pops and it's definitely more defined and louder with the catted downpipe but the logic from the DME is still the same. Just the noise was affected.

it can get pretty loud, i just wish it will burble more on lower rpm

[jimmyjohn]

Question on the down pipe (hopefully this is the right place) — what value does the Dow pipe bring? How do you know what is a good one vs bad one?

[freshxdough]

Originally Posted by jimmyjohn

Question on the down pipe (hopefully this is the right place) — what value does the Dow pipe bring? How do you know what is a good one vs bad one?

Higher flow and louder. Think of the catalytic converter as a restriction. Minimize the restriction the and you get more flow and you can use this extra flow with tuning for increased numbers.

[freshxdough]

Originally Posted by Adam X3M40i

it can get pretty loud, i just wish it will burble more on lower rpm

That's honestly my main reason for going BM3 is burble customization.

[AcidLotus]

Originally Posted by Adam X3M40i

For the downpipe i went with CTS catless downpipe, had them all in my previous car. Always perfect fitment and no issues.

I was looking at that one as well. Do they have sales during holidays like x-ph.com or some of the other re-sellers do?

[AcidLotus]

Originally Posted by freshxdough

That's honestly my main reason for going BM3 is burble customization.

I'd say BM3 definitely has a more agile/DevOps approach as well - Constantly updating their agent, adding new cars, updating maps on old cars. Just my perception from the various tuners I've seen and used.

[Adam X3M40i]

Originally Posted by AcidLotus

I was looking at that one as well. Do they have sales during holidays like x-ph.com or some of the other re-sellers do?

https://www.bm3tuning.com/g30/x3-x4-540-b58-downpipe

Check it out