Mid-pipe? A must when going DP + Tune or its not a huge power gainer?

MikeeM3 · 04-20-2018, 09:19 PM

I have just ordered my catless DP + drop in filters + BM3 and i was gonna order the mid-pipe but i changed my mind for now and wait a little later to do so.

I was just wondering if most of you guys kept the OEM mid-pipe or you went aftermarket??

5soko · 04-20-2018, 09:47 PM

wont be a gain you will notice

schnell325 · 04-20-2018, 10:11 PM

But the sound difference with a proper mid pipe is worth the entry fee

F80Moe · 04-21-2018, 02:38 AM

Little extra power since most mid pipes delete the secondary cats

Louder sound off course

dpgfunk · 04-21-2018, 11:01 AM

The AA midpipe offers some gains, however I'm not sure anyone has independently tested those claims.

iuhutch · 04-21-2018, 08:30 PM

Quote:

Originally Posted by MikeeM3

I have just ordered my catless DP + drop in filters + BM3 and i was gonna order the mid-pipe but i changed my mind for now and wait a little later to do so.

I was just wondering if most of you guys kept the OEM mid-pipe or you went aftermarket??

Straight pipe / non-resonated mid pipes add the most power when leave stock 400 cell Downpipes on. If getting noncatted DP then it actually is a risk for back pressure on the turbos and becomes SO loud it's obnoxious

SanchoDivine · 04-21-2018, 10:09 PM

Quote:

Originally Posted by iuhutch

Quote:

Originally Posted by MikeeM3

I have just ordered my catless DP + drop in filters + BM3 and i was gonna order the mid-pipe but i changed my mind for now and wait a little later to do so.

I was just wondering if most of you guys kept the OEM mid-pipe or you went aftermarket??

Straight pipe / non-resonated mid pipes add the most power when leave stock 400 cell Downpipes on. If getting noncatted DP then it actually is a risk for back pressure on the turbos and becomes SO loud it's obnoxious

Explain please because this claim doesn't make any sense

mike@x-ph.com · 04-23-2018, 05:34 PM

Active Autowerke Midpipe will add ~ 15whp
and exhaust will sound a lot better

tom @ eas · 04-23-2018, 06:40 PM

Midpipes offer zero gains, just sound and marketing. Stock exhaust is very efficient.

MikeeM3 · 04-23-2018, 06:58 PM

Quote:

Originally Posted by tom @ eas

Midpipes offer zero gains, just sound and marketing. Stock exhaust is very efficient.

Thanks Tom

whoop_ass · 04-24-2018, 12:56 AM

I think on stock on stock tune or even a stage 1 there are no gain with a midpipe
once the Wick is turned up with lots of boost there will be a few ponies in it with the restiction of the secondary cats removed.
as for cat back, as tom says the stock exhaust with the Valves open is a very efficient design and almost a straight pipe.

SflBimmer8484 · 04-24-2018, 08:39 AM

Quote:

Originally Posted by tom @ eas

Midpipes offer zero gains, just sound and marketing. Stock exhaust is very efficient.

Where do you get your info? You are so wrong. Just because you do not sell a mid pipe that makes power does NOT mean they don't make any power.

Quote:

Originally Posted by whoop_ass

I think on stock on stock tune or even a stage 1 there are no gain with a midpipe
once the Wick is turned up with lots of boost there will be a few ponies in it with the restiction of the secondary cats removed.
as for cat back, as tom says the stock exhaust with the Valves open is a very efficient design and almost a straight pipe.

It is true the rear section flows extremely well with the valves open but, please don't regurgitate tom's false narrative.

jstnstr · 04-24-2018, 08:57 AM

Ah, thank you definitive and official expert on all things F8X exhaust related.

tom @ eas · 04-24-2018, 11:45 AM

Quote:

Originally Posted by Andrew@ActiveAutowerke

Where do you get your info? You are so wrong. Just because you do not sell a mid pipe that makes power does NOT mean they don't make any power.

We don't offer midpipes because they don't make power. Just sound.

We've never seen a AA midpipe that's made gains on the dyno, sorry. Plenty of +600whp cars on the road without magic midpipes performing just fine.

SflBimmer8484 · 04-24-2018, 12:00 PM

Quote:

Originally Posted by tom @ eas

We don't offer midpipes because they don't make power. Just sound.

We've never seen a AA midpipe that's made gains on the dyno, sorry. Plenty of +600whp cars on the road without magic midpipes performing just fine.

Have you ever tested our mid pipe before and after?

No reply for your last comment.

tom @ eas · 04-24-2018, 12:06 PM

Quote:

Originally Posted by Andrew@ActiveAutowerke

Have you ever tested our mid pipe before and after?

No reply for your last comment.

We have, but haven't seen any gains outside of your own dynos. Same goes with any other midpipe, including Akrapovic, Remus and others on the marketplace. BMW did a fantastic job on the stock system.

No reason to argue or get defensive, just not interested.

SflBimmer8484 · 04-24-2018, 12:10 PM

Quote:

Originally Posted by tom @ eas

Quote:

Originally Posted by Andrew@ActiveAutowerke

Where do you get your info? You are so wrong. Just because you do not sell a mid pipe that makes power does NOT mean they don't make any power.

We don't offer midpipes because they don't make power. Just sound.

We've never seen a AA midpipe that's made gains on the dyno, sorry. Plenty of +600whp cars on the road without magic midpipes performing just fine.

Quote:

Originally Posted by tom @ eas

Quote:

Originally Posted by Andrew@ActiveAutowerke

Have you ever tested our mid pipe before and after?

No reply for your last comment.

We have, but haven't seen any gains outside of your own dynos. Same goes with any other midpipe, including Akrapovic, Remus and others on the marketplace. BMW did a fantastic job on the stock system.

No reason to argue or get defensive, just not interested.

Ok so you can't back up your claims and you keep comparing us to dual stock style pipes. I agree let's move on.

SanchoDivine · 04-24-2018, 12:47 PM

Quote:

Originally Posted by tom @ eas

Quote:

Originally Posted by Andrew@ActiveAutowerke

Have you ever tested our mid pipe before and after?

No reply for your last comment.

We have, but haven't seen any gains outside of your own dynos. Same goes with any other midpipe, including Akrapovic, Remus and others on the marketplace. BMW did a fantastic job on the stock system.

No reason to argue or get defensive, just not interested.

So the secondary cats don't add any restrictions compared to no secondary cats at all?

It would have seemed an easy assumption that removing such restrictions, especially on a turbo vehicle that there would be at least some improvement even if it is negligible.

tom @ eas · 04-24-2018, 01:02 PM

Quote:

Originally Posted by SanchoDivine

So the secondary cats don't add any restrictions compared to no secondary cats at all?

It would have seemed an easy assumption that removing such restrictions, especially on a turbo vehicle that there would be at least some improvement even if it is negligible.

Minimal if any at all, not enough to show on the dyno. Secondary cats aren't really that restrictive until pushing higher boost levels (ie: Stage 2 turbos).

SflBimmer8484 · 04-24-2018, 01:24 PM

Quote:

Originally Posted by SanchoDivine

So the secondary cats don't add any restrictions compared to no secondary cats at all?

It would have seemed an easy assumption that removing such restrictions, especially on a turbo vehicle that there would be at least some improvement even if it is negligible.

Please see the link below.

https://f80.bimmerpost.com/forums/sh....php?t=1217568

dpgfunk · 04-24-2018, 01:42 PM

While we're on this topic....getting my AA midpipe installed as we speak at AutoTalent

FriedPiston · 04-24-2018, 01:49 PM

There's gotta be someone out there willing to take a partially discounted AA midpipe, then have EAS do a baseline, install and dyno again to help settle this dispute.

It'll be a win, win and win scenario for all parties involved

04-20-2018, 09:19 PM	#1
MikeeM3 Lieutenant Colonel 222 Rep 1,632 Posts Drives: 600whp M4 Join Date: Feb 2015 Location: Ottawa iTrader: (0)	Mid-pipe? A must when going DP + Tune or its not a huge power gainer? I have just ordered my catless DP + drop in filters + BM3 and i was gonna order the mid-pipe but i changed my mind for now and wait a little later to do so. I was just wondering if most of you guys kept the OEM mid-pipe or you went aftermarket??
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04-20-2018, 09:47 PM	#2
5soko Brigadier General 333 Rep 4,632 Posts Drives: M5 Join Date: Aug 2007 Location: Brooklyn, NY iTrader: (4)	wont be a gain you will notice __________________ Current: E63S AMG 4matic RENNtech \|\| M5 Evolve..Eventuri \|\| F10 LCI 535i MHD
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04-20-2018, 10:11 PM	#3
schnell325 Bored at work.... 890 Rep 5,391 Posts Drives: 2016 F82 M4 GTS//2022 M235iGC Join Date: Aug 2007 Location: Comox Valley iTrader: (8)	But the sound difference with a proper mid pipe is worth the entry fee __________________ Grey Matter:2008 E92 M3:608/425. SG/PS SOLD! Dark Matter:2015 F80 M3:495/505. SOLD! Anti Matter :2016 F82 M4 GTS What next?!? A 2022 M235i GC- I must be getting old
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04-21-2018, 02:38 AM	#4
F80Moe Lieutenant 279 Rep 435 Posts Drives: 2016 F80 M3 6spd Join Date: Dec 2016 Location: Kuwait iTrader: (0)	Little extra power since most mid pipes delete the secondary cats Louder sound off course
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04-21-2018, 11:01 AM	#5
dpgfunk Captain 333 Rep 651 Posts Drives: F82 M4 Join Date: Nov 2013 Location: Los Angeles iTrader: (4)	The AA midpipe offers some gains, however I'm not sure anyone has independently tested those claims.
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04-23-2018, 05:34 PM	#8
mike@x-ph.com BimmerPost Supporting Vendor 24179 Rep 190,776 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Active Autowerke Midpipe will add ~ 15whp and exhaust will sound a lot better __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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04-23-2018, 06:40 PM	#9
tom @ eas BimmerPost Supporting Vendor 8116 Rep 18,814 Posts Drives: BMW Join Date: Nov 2005 Location: Anaheim, CA iTrader: (19) Garage List 2018 BMW i3s [0.00] 2010 BMW M3 [6.50] 2015 BMW M4 [5.25]	Midpipes offer zero gains, just sound and marketing. Stock exhaust is very efficient. __________________ Tom G. \| european auto source (eas) email: tom@europeanautosource.com · web: https://europeanautosource.com· tel 866.669.0705 · ca: 714.369.8524 x22 GET DAILY UPDATES ON OUR BLOG · FACEBOOK · YOUTUBE · FLICKR · INSTAGRAM
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04-24-2018, 12:56 AM	#11
whoop_ass Captain 355 Rep 719 Posts Drives: non Join Date: Apr 2013 Location: On Earth iTrader: (0)	I think on stock on stock tune or even a stage 1 there are no gain with a midpipe once the Wick is turned up with lots of boost there will be a few ponies in it with the restiction of the secondary cats removed. as for cat back, as tom says the stock exhaust with the Valves open is a very efficient design and almost a straight pipe.
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04-24-2018, 08:57 AM	#13
jstnstr Lieutenant Colonel 928 Rep 1,496 Posts Drives: G20 M340xi Join Date: Apr 2012 Location: SWFL iTrader: (2)	Ah, thank you definitive and official expert on all things F8X exhaust related. __________________ \| M-Performance Exhaust \| JB4 Map 4 on E35 \| BMC Red Panel Filter \| \| Previous: 18 M3 ZCP \| 17 M3 6MT \| 15 M235i \|
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04-24-2018, 01:42 PM	#21
dpgfunk Captain 333 Rep 651 Posts Drives: F82 M4 Join Date: Nov 2013 Location: Los Angeles iTrader: (4)	While we're on this topic....getting my AA midpipe installed as we speak at AutoTalent Attached Images
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04-24-2018, 01:49 PM	#22
FriedPiston Colonel 1973 Rep 2,711 Posts Drives: Scraper Join Date: Oct 2013 Location: East Oakland, CA iTrader: (26)	There's gotta be someone out there willing to take a partially discounted AA midpipe, then have EAS do a baseline, install and dyno again to help settle this dispute. It'll be a win, win and win scenario for all parties involved
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