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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Exhaust burrbles/gurggles on our platform compared to N55 w/ PPK



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      06-17-2016, 09:28 AM   #529
Supra2k6
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Quote:
Originally Posted by FIFTW View Post
Okay, I'll play...this is right after uploading the same tune but with the exhaust options "Medium" and "3 seconds" chosen.


sounds great. any mods to the stock exhaust? besides dps? e90 or e92? as i understand the e92 has a factory x pipe
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      06-17-2016, 09:56 AM   #530
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I tried it last night and couldn't hear any difference on medium or aggressive. Drove hard, let off gas, and nothing. Wagner DP's with stock exhaust.
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      06-17-2016, 10:27 AM   #531
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Quote:
Originally Posted by Captain Canuck View Post
I tried it last night and couldn't hear any difference on medium or aggressive. Drove hard, let off gas, and nothing. Wagner DP's with stock exhaust.
What is this drove hard, let off glass nonsense? Anything over 2500 rpm and I can clearly hear it. I still have one set of cats and only a very conservative axelback (bastuck)

I can pretty much hear this in the cabin with the windows closed.

Watergates closed at idle too (lagfix 100)
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      06-17-2016, 10:50 AM   #532
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Quote:
Originally Posted by tofu? View Post
What is this drove hard, let off glass nonsense? Anything over 2500 rpm and I can clearly hear it. I still have one set of cats and only a very conservative axelback (bastuck)

I can pretty much hear this in the cabin with the windows closed.

Watergates closed at idle too (lagfix 100)
I don't know what to tell you. I couldn't hear any difference with the windows down.
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      06-17-2016, 10:55 AM   #533
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Quote:
Originally Posted by tofu? View Post
What is this drove hard, let off glass nonsense? Anything over 2500 rpm and I can clearly hear it. I still have one set of cats and only a very conservative axelback (bastuck)

I can pretty much hear this in the cabin with the windows closed.

Watergates closed at idle too (lagfix 100)
I don't know what to tell you. I couldn't hear any difference with the windows down in 20 minutes of driving around.
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      06-17-2016, 11:01 AM   #534
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Quote:
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I don't know what to tell you. I couldn't hear any difference with the windows down in 20 minutes of driving around.
same. I have a 35is model though so maybe mine already came stock with this...
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      06-17-2016, 11:31 AM   #535
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Quote:
Originally Posted by Captain Canuck View Post
I don't know what to tell you. I couldn't hear any difference with the windows down in 20 minutes of driving around.
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Originally Posted by 2011z435is View Post
same. I have a 35is model though so maybe mine already came stock with this...
Try sport mode and report back.
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      06-17-2016, 11:34 AM   #536
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Mine is a manual so no sport mode.
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      06-17-2016, 11:41 AM   #537
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Quote:
Originally Posted by Captain Canuck View Post
Mine is a manual so no sport mode.
You don't even have to drive hard just get going 30-40 and downshift to second and let off. Essentially it works under engine braking. The higher your rpms on decel (engine braking) the more pops and bangs.
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      06-17-2016, 12:02 PM   #538
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Mine is a manual so no sport mode.
JB4?
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      06-17-2016, 12:40 PM   #539
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It be really cool if we can do it neutral
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      06-17-2016, 12:42 PM   #540
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Quote:
Originally Posted by jyamona View Post
Try sport mode and report back.
Yeah I was in sport+. I can try the highest setting next, I checked Medium before. But I thought this also had some noise during shift changes at WOT. Guess its just the stock IS programming for whenever you let off the throttle.


Either way, its pretty cool that you guys implemented this for the non-is guys here!
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      06-17-2016, 01:10 PM   #541
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JB4?
Nope, just MHD. No options checked except limit boost by gear and exhaust burble.
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      06-17-2016, 02:07 PM   #542
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3 secs, medium + AT + JB4 + stock exhaust (no DPs) + flap always open on DS mode.

I can definitely hear it, but it has to be 2300rpm-2500rpm and up when letting off. If I downshift and RPMs hit close to 4k I'll more often than not hear a loud pop, almost backfire-ish.

3 secs is too long for me, re-flashing with 2 secs today.

Good work to all those involved! THANK YOU!
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      06-17-2016, 02:37 PM   #543
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Quote:
Originally Posted by Supra2k6 View Post
sounds great. any mods to the stock exhaust? besides dps? e90 or e92? as i understand the e92 has a factory x pipe
Stock Exhaust other than the Downpipes. It's an e92 as well so factory X pipe. It's not as loud from a distance but you can hear the popping now from a short distance. I plan on doing the PE mod when I get my cyba 3.8" tips in
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      06-17-2016, 02:55 PM   #544
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For those running the Alpina - it's more challenging to get the burbles specifically in D mode.
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      06-17-2016, 03:33 PM   #545
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Not sure why you stock exhaust guys are not having any luck at all. I have stock exhaust, stock dp's and this thing is loud. My exhaust always made good gurgle around 2500rpm in 2nd and 3rd when I let off the gas but this is another level. I'll film a video shortly and show what it's like with stock exhaust, only exhaust flap mod.
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      06-17-2016, 03:44 PM   #546
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I hear it. Bone stock exhaust all the way. E92 with golf tee. 1s and softest setting.

Might turn it up to medium and see if it gets annoying or not.

Hear it the most in manual mode with decel over 3k.
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      06-17-2016, 04:24 PM   #547
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Ive jb4 with mhd pump backend flash. If i want to flash just this option, does it takes 30 min to flash, like the first flash? If so, i know i need to buy a chargee
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      06-17-2016, 05:26 PM   #548
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Quote:
Originally Posted by squixs
Ive jb4 with mhd pump backend flash. If i want to flash just this option, does it takes 30 min to flash, like the first flash? If so, i know i need to buy a chargee
No
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      06-17-2016, 05:27 PM   #549
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Seems like the extra resonator on the pre-lci e90 really muffles all the noises.
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      06-17-2016, 06:30 PM   #550
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Quote:
Originally Posted by siphor1989 View Post
Seems like the extra resonator on the pre-lci e90 really muffles all the noises.
just cut out the resonator and replace it with an x-pipe. i did it for like ~$100 and it sounds great!
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