Exhaust much quieter after JB3?!

D.yi · 03-01-2010, 12:56 AM

i had my jb3 1.4 gen 3 on for a couple months and took it out because i thought i was selling my car. After taking the tune out the stock 335 e92 exhaust was noticeably louder. I put the jb3 back in and now i know i am not crazy the exhaust is quieter again... thoughts?

OpenFlash · 03-01-2010, 01:00 AM

By running higher wastegate DC at idle/cruise, you channel more of the exhaust through the turbos which chop up the pulses and reduces exhaust volume and changes exhaust tone.

Shiv

Terrance28 · 03-01-2010, 01:04 AM

I noticed this too. I had taken out my jb3 for a week and my muffler deletes were so damn annoying I hated it.

D.yi · 03-01-2010, 02:14 AM

haha yeah i was going to do the muff delete when i was running the jb3 but when i took it out i didn't think i needed it. now that its back in its really quiet. thanks shiv for the explanation! terrance it says in your sig your running magnaflow race not a muffler delete.

ehssan_alkhiyami · 03-01-2010, 07:49 AM

i uses this trick to tell if I'm running stock or tune maps on the procede

...

when my exhaust is load , means i'm on valet mode ... when it's quite : means i'm on maps

03-01-2010, 12:56 AM	#1
D.yi Major 53 Rep 1,216 Posts Drives: SB e92 335i Join Date: Oct 2009 Location: SEATTLE iTrader: (0)	Exhaust much quieter after JB3?! i had my jb3 1.4 gen 3 on for a couple months and took it out because i thought i was selling my car. After taking the tune out the stock 335 e92 exhaust was noticeably louder. I put the jb3 back in and now i know i am not crazy the exhaust is quieter again... thoughts? __________________ 07 BSM/Coral e92 335i 6MT
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03-01-2010, 01:00 AM	#2
OpenFlash 1809 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	By running higher wastegate DC at idle/cruise, you channel more of the exhaust through the turbos which chop up the pulses and reduces exhaust volume and changes exhaust tone. Shiv
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03-01-2010, 01:04 AM	#3
Terrance28 Brigadier General 114 Rep 3,334 Posts Drives: Crimson Red E92 Join Date: Nov 2007 Location: Killeen, TX iTrader: (17)	I noticed this too. I had taken out my jb3 for a week and my muffler deletes were so damn annoying I hated it. __________________ Mods list got too long, lets just say more than enough.
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03-01-2010, 02:14 AM	#4
D.yi Major 53 Rep 1,216 Posts Drives: SB e92 335i Join Date: Oct 2009 Location: SEATTLE iTrader: (0)	haha yeah i was going to do the muff delete when i was running the jb3 but when i took it out i didn't think i needed it. now that its back in its really quiet. thanks shiv for the explanation! terrance it says in your sig your running magnaflow race not a muffler delete. __________________ 07 BSM/Coral e92 335i 6MT
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03-01-2010, 07:49 AM	#5
ehssan_alkhiyami I don't drive fast , i fly very low 11 Rep 358 Posts Drives: E60 M5 , F31 320D Xdrive Join Date: Sep 2008 Location: Baden Württemberg iTrader: (3)	i uses this trick to tell if I'm running stock or tune maps on the procede ... when my exhaust is load , means i'm on valet mode ... when it's quite : means i'm on maps
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