Audio upgrade question

Orlando335i · 08-25-2015, 02:27 PM

I've read multiple threads on here researching this subject. I have the base audio system and It's beyond a let down. I've purchased CDT Audio speakers for the back, rainbow tweeters and speakers up front, and Kicker SS MB8 under seat subs as well as the wiring harness. I'm waiting for my JL XD 600/6 amp to arrive. So I think I've got anything, or am I missing something? I've read about processors do I really need one. Also, I torn between upgrading my head unit. I've read the OEM has to stay in the car in order for BMW to run diagnostic on the car. Is this true, I think I read where some people moved the OEM unit to the trunk? What else am I missing? Or would just having my Base unit reprogramed to the HIFI settings be a better choice?

ctuna · 08-25-2015, 03:50 PM

Dwtk · 08-26-2015, 11:02 AM

It only BMW that require you to have the original unit for diagnostics. Private garage who does software updates says they it didnt matter if I removed it . On the safe side you could see there any updates required before you install your kit. As the E90 are getting on a bit there will be little to no updates available. Diagnostic wise all the usual Ediabas Inpa DIS SSS work fine without it. The only thing you might need it for is the reverse sounds . But my Zenec 3215 head unit has a canbus for this so I didnt need to relocate radio to back .

08-25-2015, 02:27 PM	#1
Orlando335i Private First Class 13 Rep 178 Posts Drives: 2011 335i sedan Join Date: Jul 2015 Location: Orlando, Florida iTrader: (1)	Audio upgrade question I've read multiple threads on here researching this subject. I have the base audio system and It's beyond a let down. I've purchased CDT Audio speakers for the back, rainbow tweeters and speakers up front, and Kicker SS MB8 under seat subs as well as the wiring harness. I'm waiting for my JL XD 600/6 amp to arrive. So I think I've got anything, or am I missing something? I've read about processors do I really need one. Also, I torn between upgrading my head unit. I've read the OEM has to stay in the car in order for BMW to run diagnostic on the car. Is this true, I think I read where some people moved the OEM unit to the trunk? What else am I missing? Or would just having my Base unit reprogramed to the HIFI settings be a better choice?
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08-25-2015, 03:50 PM	#2
ctuna Lieutenant General 2033 Rep 13,347 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	FYI FYI Yep the original head unit must be installed for diagnostics and software updates from BMW. There can also be error indicators from SOS and PDC will be a problem when the OEM head unit is disconnected. You need away to flatten the frequency curve from the stock head unit if its set to stereo . Jl cleansweep , reprogramming to Hi Fi , processors or Technic suggests you set the door crossovers for - value. head unit http://www.e90post.com/forums/showth...ight=head+unit http://www.e90post.com/forums/showthread.php?t=1036190 http://www.e90post.com/forums/showth...hlight=dynavin http://www.janus-design.net/english/ http://www.e90post.com/forums/showthread.php?t=355089 http://www.e90post.com/forums/showth...ight=head+unit http://www.e90post.com/forums/showth...hlight=dynavin http://www.e90post.com/forums/showth...hlight=dynavin http://www.e90post.com/forums/showth...light=retrofit http://www.e90post.com/forums/showthread.php?t=993447 http://www.e90post.com/forums/showthread.php?t=1016187 http://www.e90post.com/forums/showth...hlight=dynavin
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08-26-2015, 11:02 AM	#3
Dwtk Enlisted Member 7 Rep 40 Posts Drives: 118d sport Join Date: May 2012 Location: Surrey iTrader: (0)	It only BMW that require you to have the original unit for diagnostics. Private garage who does software updates says they it didnt matter if I removed it . On the safe side you could see there any updates required before you install your kit. As the E90 are getting on a bit there will be little to no updates available. Diagnostic wise all the usual Ediabas Inpa DIS SSS work fine without it. The only thing you might need it for is the reverse sounds . But my Zenec 3215 head unit has a canbus for this so I didnt need to relocate radio to back .
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