F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > BM3 + High flow cat/catless downpipe & intercooler combinnation/suggestions (N26)?
proTUNING Freaks
Post Reply
 
Thread Tools Search this Thread
      05-17-2018, 07:32 AM   #1
fate_f30
Lieutenant
fate_f30's Avatar
United_States
149
Rep
488
Posts

Drives: 2014 Glacier Silver F30 328i
Join Date: Apr 2017
Location: Attleboro, Massacusetts

iTrader: (0)

BM3 + High flow cat/catless downpipe & intercooler combinnation/suggestions (N26)?

I recently purchased bootmod3 and will be installing Stage 1 this afternoon. I want to eventually upgrade to Stage 2 but realized to get any noticeable gains in Stage 2 I will need to upgrade my downpipe and intercooler. I'm wondering if anyone on the forum is running bm3 (Stage 2) with the upgraded downpipe & intercooler on their N26? What downpipe and intercooler combination are you running? Did you run into any problems?

* I preferably want to run a high flow catted downpipe because emissions are tough to pass in my state.
* All my most recent mods are in my signature and I've already removed my Dinan Sport+ tuner.
* I have the base model front bumper and don't plan on changing it. Not sure if this is going to cause clearance issues with a new intercooler?

Thanks~
__________________
2014 GLACIER SILVER F30 328i * Wheels:18" VMR V801 Titanium Black Shadow * Springs: DINAN 1" Lowering Springs * Tune: BM3 OTS E30/93 OCT * Engine: Evolution Racewerks Catless DP/CP/FMIC * Intake: AWE S-Flo Carbon Fiber Intake * Exhaust: AWE Exhaust Suite + Mid Pipe * Go Fast Bits DV+ Diverter Valve * Plugs: NGK LI Plugs * Lights: Depo Angel Eyes W/ Morimoto HID's * Hood: Seibon Carbon Fiber Hood
Appreciate 0
      05-17-2018, 09:20 AM   #2
madmortar
Captain
168
Rep
753
Posts

Drives: 2013 BMW 328i M-Sport
Join Date: Aug 2016
Location: Savannah, GA

iTrader: (0)

Good luck!
In your your opinion of DINAN sport vs BM3 stage 1.
Appreciate 0
      05-17-2018, 09:27 AM   #3
fate_f30
Lieutenant
fate_f30's Avatar
United_States
149
Rep
488
Posts

Drives: 2014 Glacier Silver F30 328i
Join Date: Apr 2017
Location: Attleboro, Massacusetts

iTrader: (0)

Quote:
Originally Posted by madmortar View Post
Good luck!
In your your opinion of DINAN sport vs BM3 stage 1.
Not sure if I understand?
Appreciate 0
      05-17-2018, 09:49 AM   #4
madmortar
Captain
168
Rep
753
Posts

Drives: 2013 BMW 328i M-Sport
Join Date: Aug 2016
Location: Savannah, GA

iTrader: (0)

Quote:
Originally Posted by bmw_bri_328i View Post
Not sure if I understand?
Sorry, i meant "interested in your opinion of DINAN vs BM3 stage 1"

After you make the switch of course.
Appreciate 0
      05-17-2018, 09:55 AM   #5
fate_f30
Lieutenant
fate_f30's Avatar
United_States
149
Rep
488
Posts

Drives: 2014 Glacier Silver F30 328i
Join Date: Apr 2017
Location: Attleboro, Massacusetts

iTrader: (0)

Quote:
Originally Posted by madmortar View Post
Sorry, i meant "interested in your opinion of DINAN vs BM3 stage 1"

After you make the switch of course.
Iíll let you know.
Appreciate 0
      05-17-2018, 10:04 AM   #6
rjd_F30
Brigadier General
rjd_F30's Avatar
United_States
1798
Rep
3,483
Posts

Drives: 2013 335i 6MT
Join Date: Jun 2017
Location: New Jersey

iTrader: (0)

VRSF DP and VRSF Intercooler is good combo, probably what I will do when I eventually go stage 2 (enjoying stage one for the foreseeable future). I also have emissions testing every 2 years here in NJ, but I plan on going catless and just throwing the stock DP back in every 2 years. It's a PITA, but I think it's worth it to just go catless. However if you do really want HF catted, I've heard good things about Evolution Racewerks' (ER) high flow catted downpipe.

You shouldn't have any fitment issues with the VRSF intercooler on the base model bumper.

As a side note, let us know what you think of BM3 stage 1! I'd love to see your logs if you get a chance as well. I'm still trying to find other stage 1 logs to compare to mine.
__________________
Instagram: rjd_f30 | Current: EBII 2013 335i 6MT RWD | Retired: Jet Black 2013 328i 8AT xDrive |
Appreciate 0
      05-17-2018, 10:18 AM   #7
BunkerJ
Colonel
BunkerJ's Avatar
1026
Rep
2,382
Posts

Drives: 2013 328i
Join Date: Mar 2017
Location: San Diego, CA

iTrader: (0)

For a cat, high flow catted or catless will both fail you more than likely. My suggestion is that if you can't get your hands on a... Let's just say "Pass by the slipping of a bill", then just swap in the stock one each time you go for an emissions test.

I'll let you do your own research on who is the "best" provider for your parts, but ER and Wagner will always get my votes for these two. ER DP and ER/Wagner FMIC are my suggestions. People will go to bat for VRSF day-and-night, but you can't beat the quality of the aforementioned companies. VRSF to me has always seemed like it "works", but the quality of materials and welds have appeared subpar. I also would look up the leak probability of some FMICs as some are leaking from the factory.
__________________

2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit
Appreciate 1
SFV8187.50
      05-17-2018, 10:40 AM   #8
rjd_F30
Brigadier General
rjd_F30's Avatar
United_States
1798
Rep
3,483
Posts

Drives: 2013 335i 6MT
Join Date: Jun 2017
Location: New Jersey

iTrader: (0)

Quote:
Originally Posted by BunkerJ View Post
For a cat, high flow catted or catless will both fail you more than likely. My suggestion is that if you can't get your hands on a... Let's just say "Pass by the slipping of a bill", then just swap in the stock one each time you go for an emissions test.

I'll let you do your own research on who is the "best" provider for your parts, but ER and Wagner will always get my votes for these two. ER DP and ER/Wagner FMIC are my suggestions. People will go to bat for VRSF day-and-night, but you can't beat the quality of the aforementioned companies. VRSF to me has always seemed like it "works", but the quality of materials and welds have appeared subpar. I also would look up the leak probability of some FMICs as some are leaking from the factory.
Fair enough, you have more experience with these products than I. VRSF is definitely the bang-for-your-buck brand, and that shows in the pricing vs. the others, but from what I've heard, their quality is still good*. When it comes to a DP, as far as I'm concerned it's a hollow pipe and if fitment is good, cheaper is better, assuming build and manufacturing is at least a 7/10. VRSF doesn't offer catted so they're out anyway if you really want catted. OP, like the above quoted post mentions, do your own research and measure the quality-price balance that works best for you. As for FMICs, here is a thread I started a while ago trying to get some insight: http://f30.bimmerpost.com/forums/sho...1466059&page=2
On the first page of that thread, you'll see another thread linked that talks all about intercoolers, and there you'll see VRSF recommended plenty of times.
On the second page (of the thread linked in this post), you'll find a log of another member showing the VRSF IC doing it's job very well, just pay attention to the IATs.

*I don't own any VRSF, ER or Wagner products, I'm just reiterating the research I've done and things I've heard.
__________________
Instagram: rjd_f30 | Current: EBII 2013 335i 6MT RWD | Retired: Jet Black 2013 328i 8AT xDrive |
Appreciate 0
      05-17-2018, 10:56 AM   #9
fate_f30
Lieutenant
fate_f30's Avatar
United_States
149
Rep
488
Posts

Drives: 2014 Glacier Silver F30 328i
Join Date: Apr 2017
Location: Attleboro, Massacusetts

iTrader: (0)

Quote:
Originally Posted by rjdnyy224 View Post
Fair enough, you have more experience with these products than I. VRSF is definitely the bang-for-your-buck brand, and that shows in the pricing vs. the others, but from what I've heard, their quality is still good*. When it comes to a DP, as far as I'm concerned it's a hollow pipe and if fitment is good, cheaper is better, assuming build and manufacturing is at least a 7/10. VRSF doesn't offer catted so they're out anyway if you really want catted. OP, like the above quoted post mentions, do your own research and measure the quality-price balance that works best for you. As for FMICs, here is a thread I started a while ago trying to get some insight: http://f30.bimmerpost.com/forums/sho...1466059&page=2
On the first page of that thread, you'll see another thread linked that talks all about intercoolers, and there you'll see VRSF recommended plenty of times.
On the second page (of the thread linked in this post), you'll find a log of another member showing the VRSF IC doing it's job very well, just pay attention to the IATs.

*I don't own any VRSF, ER or Wagner products, I'm just reiterating the research I've done and things I've heard.

I'm really glad that both of you chimed in as I've been looking through a bunch of your threads and you seem to give great perspective and insight on these subjects. I'm starting to wonder if it's all worth it...?
__________________
2014 GLACIER SILVER F30 328i * Wheels:18" VMR V801 Titanium Black Shadow * Springs: DINAN 1" Lowering Springs * Tune: BM3 OTS E30/93 OCT * Engine: Evolution Racewerks Catless DP/CP/FMIC * Intake: AWE S-Flo Carbon Fiber Intake * Exhaust: AWE Exhaust Suite + Mid Pipe * Go Fast Bits DV+ Diverter Valve * Plugs: NGK LI Plugs * Lights: Depo Angel Eyes W/ Morimoto HID's * Hood: Seibon Carbon Fiber Hood
Appreciate 1
rjd_F301797.50
      05-17-2018, 10:59 AM   #10
fate_f30
Lieutenant
fate_f30's Avatar
United_States
149
Rep
488
Posts

Drives: 2014 Glacier Silver F30 328i
Join Date: Apr 2017
Location: Attleboro, Massacusetts

iTrader: (0)

Quote:
Originally Posted by rjdnyy224 View Post
VRSF DP and VRSF Intercooler is good combo, probably what I will do when I eventually go stage 2 (enjoying stage one for the foreseeable future). I also have emissions testing every 2 years here in NJ, but I plan on going catless and just throwing the stock DP back in every 2 years. It's a PITA, but I think it's worth it to just go catless. However if you do really want HF catted, I've heard good things about Evolution Racewerks' (ER) high flow catted downpipe.

You shouldn't have any fitment issues with the VRSF intercooler on the base model bumper.

As a side note, let us know what you think of BM3 stage 1! I'd love to see your logs if you get a chance as well. I'm still trying to find other stage 1 logs to compare to mine.

I'll def let you know about BM3. I'm getting ready to flash it in about an hour. I'm def a newb when it comes to a lot of this stuff so I'm glad a have a forum like this to call out questions that I might need answered. On that note. When I datalog in BM3 I don't have to be hooked up to wifi correct? I just leave in my OB2 in and record the data while I drive? I assume you can do this offline?
__________________
2014 GLACIER SILVER F30 328i * Wheels:18" VMR V801 Titanium Black Shadow * Springs: DINAN 1" Lowering Springs * Tune: BM3 OTS E30/93 OCT * Engine: Evolution Racewerks Catless DP/CP/FMIC * Intake: AWE S-Flo Carbon Fiber Intake * Exhaust: AWE Exhaust Suite + Mid Pipe * Go Fast Bits DV+ Diverter Valve * Plugs: NGK LI Plugs * Lights: Depo Angel Eyes W/ Morimoto HID's * Hood: Seibon Carbon Fiber Hood
Appreciate 0
      05-17-2018, 11:17 AM   #11
rjd_F30
Brigadier General
rjd_F30's Avatar
United_States
1798
Rep
3,483
Posts

Drives: 2013 335i 6MT
Join Date: Jun 2017
Location: New Jersey

iTrader: (0)

Quote:
Originally Posted by bmw_bri_328i View Post
I'll def let you know about BM3. I'm getting ready to flash it in about an hour. I'm def a newb when it comes to a lot of this stuff so I'm glad a have a forum like this to call out questions that I might need answered. On that note. When I datalog in BM3 I don't have to be hooked up to wifi correct? I just leave in my OB2 in and record the data while I drive? I assume you can do this offline?
Yep, that's what the forum's here for .

I'm honestly not sure about offline dataloging with BM3. BM3 is all web based, so it all goes more smoothly with an internet connection. You can flash offline by using the "download now, flash later" function, but I don't know if you can datalog without an internet connection. Whenever I datalog, I connect my laptop to the personal hotspot on my iPhone. So I'm pretty sure you need an internet connection to log, or at least I do. I'm still new to the BM3 platform as well, so I can't really give you a definite answer.
__________________
Instagram: rjd_f30 | Current: EBII 2013 335i 6MT RWD | Retired: Jet Black 2013 328i 8AT xDrive |
Appreciate 0
      05-17-2018, 11:34 AM   #12
fate_f30
Lieutenant
fate_f30's Avatar
United_States
149
Rep
488
Posts

Drives: 2014 Glacier Silver F30 328i
Join Date: Apr 2017
Location: Attleboro, Massacusetts

iTrader: (0)

Quote:
Originally Posted by rjdnyy224 View Post
Yep, that's what the forum's here for .

I'm honestly not sure about offline dataloging with BM3. BM3 is all web based, so it all goes more smoothly with an internet connection. You can flash offline by using the "download now, flash later" function, but I don't know if you can datalog without an internet connection. Whenever I datalog, I connect my laptop to the personal hotspot on my iPhone. So I'm pretty sure you need an internet connection to log, or at least I do. I'm still new to the BM3 platform as well, so I can't really give you a definite answer.
Oh snap! I forgot about iPhone hotspot!
__________________
2014 GLACIER SILVER F30 328i * Wheels:18" VMR V801 Titanium Black Shadow * Springs: DINAN 1" Lowering Springs * Tune: BM3 OTS E30/93 OCT * Engine: Evolution Racewerks Catless DP/CP/FMIC * Intake: AWE S-Flo Carbon Fiber Intake * Exhaust: AWE Exhaust Suite + Mid Pipe * Go Fast Bits DV+ Diverter Valve * Plugs: NGK LI Plugs * Lights: Depo Angel Eyes W/ Morimoto HID's * Hood: Seibon Carbon Fiber Hood
Appreciate 0
      05-18-2018, 09:34 AM   #13
BunkerJ
Colonel
BunkerJ's Avatar
1026
Rep
2,382
Posts

Drives: 2013 328i
Join Date: Mar 2017
Location: San Diego, CA

iTrader: (0)

You can log offline and when you come back online, it'll upload the log.

But back on the parts. For DP, you can definitely go VRSF. My only concern was the welds. I live in California AND I'm lowered on coilovers, so it's not uncommon for my exhaust to take a hit. Flexibility and strong welds are key, because I don't want the DP breaking (That's why it has that mesh BTW. Helps it flex when hit)

For FMIC... Just look up logs and reviews. I don't doubt the capability of the higher end VRSF FMICs, but their cheapest one is pretty questionable.
__________________

2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit
Appreciate 0
      09-27-2018, 10:59 AM   #14
madmortar
Captain
168
Rep
753
Posts

Drives: 2013 BMW 328i M-Sport
Join Date: Aug 2016
Location: Savannah, GA

iTrader: (0)

Sorry if i missed it but did you ever give a review of the upgrade?
Change from DINAN sport to BM3 stage 1 to BM3 stage 2
Appreciate 0
      09-27-2018, 11:19 AM   #15
rcaso26
Lieutenant
rcaso26's Avatar
239
Rep
426
Posts

Drives: 2015 328i xdrive
Join Date: Oct 2017
Location: Long Island, NY

iTrader: (0)

Hey I'm considering a catless or high flow catted downpipe on my N26. Does a catless DP have a strong smell on the N26? I'm thinking it wont be so bad since the N26 has the secondary cat in the midpipe, but I have no idea. I really dont feel like shelling out $1000 for a catted DP if it will fail emissions the same as a catless DP.
Appreciate 0
      09-27-2018, 11:25 AM   #16
s3ri3s1
Second Lieutenant
s3ri3s1's Avatar
168
Rep
224
Posts

Drives: alpine white 328
Join Date: Jul 2018
Location: Nashville

iTrader: (1)

I love my Dinan intercooler, but you have to do a lot of modifications to get it to fit
Appreciate 0
      09-28-2018, 07:53 AM   #17
anotheran
Sedan Driver
Canada
368
Rep
974
Posts

Drives: A nice car
Join Date: May 2016
Location: Canada

iTrader: (0)

Quote:
Originally Posted by rcaso26 View Post
Hey I'm considering a catless or high flow catted downpipe on my N26. Does a catless DP have a strong smell on the N26? I'm thinking it wont be so bad since the N26 has the secondary cat in the midpipe, but I have no idea. I really dont feel like shelling out $1000 for a catted DP if it will fail emissions the same as a catless DP.
Catted may fail emissions tests as it can intermittently throw a CEL. You are going from a 400 to a 200 cell and the sensors can tell a difference
__________________
Slapping on M Performance parts, ZHP, badges, and stickers does not ///M car make

ZCP | ZHP | ZTR | ZE0 | MSport | ZMP | DHP | MStickerPack | THP | MPPSK | MPPK
BMW MSP Lightweight Jacket | DTM Motorsport Team Cap| BMW M Drift Cat 5 | BMW M Thermo Mug
Appreciate 0
      09-30-2018, 06:37 AM   #18
fate_f30
Lieutenant
fate_f30's Avatar
United_States
149
Rep
488
Posts

Drives: 2014 Glacier Silver F30 328i
Join Date: Apr 2017
Location: Attleboro, Massacusetts

iTrader: (0)

Quote:
Originally Posted by rcaso26 View Post
Hey I'm considering a catless or high flow catted downpipe on my N26. Does a catless DP have a strong smell on the N26? I'm thinking it wont be so bad since the N26 has the secondary cat in the midpipe, but I have no idea. I really dont feel like shelling out $1000 for a catted DP if it will fail emissions the same as a catless DP.
I have the ER catless DP and you're going to smell it. After a short amount of time you'll get use to it won't even notice it. If you wanna play you gotta pay. You know?
__________________
2014 GLACIER SILVER F30 328i * Wheels:18" VMR V801 Titanium Black Shadow * Springs: DINAN 1" Lowering Springs * Tune: BM3 OTS E30/93 OCT * Engine: Evolution Racewerks Catless DP/CP/FMIC * Intake: AWE S-Flo Carbon Fiber Intake * Exhaust: AWE Exhaust Suite + Mid Pipe * Go Fast Bits DV+ Diverter Valve * Plugs: NGK LI Plugs * Lights: Depo Angel Eyes W/ Morimoto HID's * Hood: Seibon Carbon Fiber Hood
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:45 AM.




f30post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST