05-07-2018, 03:24 AM | #1 |
Registered
4
Rep 1
Posts |
Straight pipe vs Exhaust N20
I have a 2014 328i and am wondering if it would be better to get straight pipe or and exhaust. Opinions on what would be better?
|
05-07-2018, 07:03 AM | #2 |
Brigadier General
1997
Rep 3,674
Posts |
Definitely get a proper exhaust. MPE, Remus, AWE, all good systems. It's of course up to your personal preference, but I don't really like the way the N20 sounds with a straight pipe or muffler delete.
__________________
Instagram: rjd_f30 | Current: EBII 2013 335i 6MT RWD & Sprint Blue 2008 Audi RS4 | Retired: 2013 328i, 2000 XTerra, 2022 Civic Si |
|
Appreciate
0
|
05-07-2018, 09:01 AM | #3 |
Colonel
1032
Rep 2,382
Posts |
Depends on the route. I went with a muffler delete and then when it came time to go catless, I went with an AWE Midpipe/Quad Muffler. Even with just the muffler gone, it droned like a MFer at low RPM and I had to drive in sport (Which I already do anyways lol). Don't know how the guys who have a muffler delete AND catless do it tbh. If you plan to go catless, you can actually do that first and leave the stock muffler on. Quiet at idle and normal driving, but sounds pretty nice on WOT. That would hold you over till you had the time/budget for a proper exhaust, whether it be AWE/Remus/MPE
__________________
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
|
05-07-2018, 11:03 AM | #4 |
Major General
2460
Rep 5,451
Posts
Drives: F30
Join Date: Oct 2017
Location: Stevenson, WA
|
Taking notes... as Im in the same boat...
Dont want to deal any lights on the dash with a catless dp. Is there a 100% fix for that? What about the HFC route? Guaranteed no SES message or not? Trying to do my homework before buying anything... How about midpipe change, any exhaust note difference? |
Appreciate
0
|
05-07-2018, 11:10 AM | #5 | |
Colonel
1032
Rep 2,382
Posts |
Quote:
Changing the midpipe depends. Most people do it to get a different resonator and get rid of the stock cat, but I've heard of people deleting the second cat and keep the stock midpipe.
__________________
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
|
05-07-2018, 02:15 PM | #6 |
First Lieutenant
80
Rep 307
Posts |
I have a Remus muffler and I deleted the second cat. Car sounds great. I wouldn’t get rid of the resonator because I like a smooth non raspy tone.
You need to be careful because it’s a 4 cylinder and it’s easy to ruin the tone. Straight pipes are for v8s. |
Appreciate
2
BunkerJ1032.00 CandyRedRC46242.00 |
05-07-2018, 04:37 PM | #7 | |
Major General
2460
Rep 5,451
Posts
Drives: F30
Join Date: Oct 2017
Location: Stevenson, WA
|
Quote:
Do you have an N20 or N26? I have the N26 which I believe has a slightly different (more restrictive) exhaust. Would love to open that up a bit but dont want to have to deal with CEL or failed emissions tests. |
|
Appreciate
0
|
05-07-2018, 05:23 PM | #8 |
Colonel
1032
Rep 2,382
Posts |
You can kill off the 2nd cat and should be okay. But the biggest restrictor is the main cat. :/
__________________
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
|
05-07-2018, 05:41 PM | #9 | |
Major General
2460
Rep 5,451
Posts
Drives: F30
Join Date: Oct 2017
Location: Stevenson, WA
|
Quote:
Seems like that would be an easy/cheap thing to try to remove and see what happens... Any N26's out there with a stock exhaust - that have removed second cat? Any emissions issues? Any sound improvement? |
|
Appreciate
0
|
05-07-2018, 05:50 PM | #10 |
#gotboost
515
Rep 861
Posts |
I am catless with a muffler delete. Sounds pretty nice outside. Slowly getting used to the drone inside
__________________
2018 F87 M2 (09/2020 - )
Dinan Cold Air Intake |Dinan Axle Back | VRSF 6.5" Intercooler | VRSF Catless Downpipe | VRSF Charge Pipes | BM3 | MST Inlet v2 | Turbosmart VR11 2013 F30 328i (12/2015 - 09/2020) SOLD! |
Appreciate
0
|
05-07-2018, 05:56 PM | #11 |
Instagram @F82_Al
33
Rep 143
Posts |
Haven't removed my second cat yet (hopefully soon) but there is no o2 sensor on secondary so no cel but for emissions in CA im unsure
|
Appreciate
0
|
05-07-2018, 09:15 PM | #13 |
First Lieutenant
80
Rep 307
Posts |
I did the Remus muffler first, and the sound difference was very minimal. Deleting the second cat was night and day difference.
|
Appreciate
0
|
05-08-2018, 12:21 AM | #14 | |
Nemo banks
65
Rep 253
Posts |
Quote:
__________________
FBO N20, G-Plus Oil Cooler , Injen Cold Air Intake, MST turbo inlet, AFE Charge Pipe, BMS Oil Catch Can, Forged Motorsport Blow of Vavle, Wanger FMIC, Circuit Werkes Catless Downpipe, Full Straight 3inch exhuast. Stage 2 Active Auto Werke.
|
|
Appreciate
0
|
05-08-2018, 08:56 AM | #15 |
Colonel
1032
Rep 2,382
Posts |
Yeah, that's what I'm saying. Drones pretty bad in Eco/Comfort where you're higher gear and lower RPM, slow acceleration. That's what forced me to drive in Sport originally, so I wouldn't get drone. Granted that's what I do now anyway, I wanted something with a good tone. Just felt like the delete was lacking a voice. It was loud as hell, but lacking that satisfying tone. Comes with time I suppose lol.
__________________
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
|
05-08-2018, 09:12 AM | #16 | |
Brigadier General
1997
Rep 3,674
Posts |
Quote:
__________________
Instagram: rjd_f30 | Current: EBII 2013 335i 6MT RWD & Sprint Blue 2008 Audi RS4 | Retired: 2013 328i, 2000 XTerra, 2022 Civic Si |
|
|
Appreciate
0
|
05-08-2018, 09:17 AM | #17 | |
Colonel
1032
Rep 2,382
Posts |
Quote:
__________________
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
rjd_F301997.00 |
05-08-2018, 10:19 AM | #18 |
Major General
2460
Rep 5,451
Posts
Drives: F30
Join Date: Oct 2017
Location: Stevenson, WA
|
Cant speak for this platform specifically but I originally went with a muffler delete on my last vehicle which was a V6. Hated it and went back to the shop within 48hrs to have Magnaflow resonated x-pipe and dual mufflers installed. Basically a custom made made catback exhaust utilizing stock tips. Because of this experience, I will likely never do a muffler delete again. Definitely more science going on within a properly set up exhaust system than some might think. Not unheard of to actually reduce performance with poorly chosen exhaust modifications. Thats why Im trying to do some homework before deciding. Obviously the safest route would be to buy a complete catback exhaust set up from a reputable brand but that is also the most $$$.
May start with removing my secondary cat. And then if that doesnt do it, buy a quality axel back... |
Appreciate
0
|
05-08-2018, 10:43 AM | #19 | |
Colonel
1032
Rep 2,382
Posts |
Quote:
__________________
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
|
10-16-2018, 04:41 PM | #20 |
Banned
3
Rep 70
Posts
Drives: F30 3 seriesN20
Join Date: Aug 2018
Location: Lawrence
|
Quick question n20 do not have secondaries cats just to be clear, so instead of a sec cat delete I would do a straight pipe directly into my muffler? Would I get some type of burbles? Would it be res delete straight to muffler or cat delete then res then muffler?
|
Appreciate
0
|
10-16-2018, 05:28 PM | #21 |
Colonel
1032
Rep 2,382
Posts |
You have to delete the cat to get the most burbles. You will have some from a muffler delete though.
__________________
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
|
10-16-2018, 05:31 PM | #22 | |
Banned
3
Rep 70
Posts
Drives: F30 3 seriesN20
Join Date: Aug 2018
Location: Lawrence
|
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|