Re: <E28> Exhaust Resonator removal.. any issues?

["Ron J" <ron@xxxxxxxxxxxxxxx>]

Hi Georg, et all

Thanks for the info, however I am a bit restricted regarding the resonator,
and the choice of muffler I plan to use will cut down the backfiring and such,
and if its really bad, I can get a stainless resonator from the local
performance shop and put it in the tunnel between the tirewell, and the gas
tank.   But I think I wont need it.  I like throaty, I just dont like the
Kazoo sound that the kids are putting on the cars lately.

Cheers
Ron Jordan
85 535i
73 911s

  ----- Original Message -----
  From: Georg and Claire Taht
  To: ron@domain.elided
  Sent: Thursday, September 12, 2002 8:26 PM
  Subject: <E28> Exhaust Resonator removal.. any issues?


  Hi Ron,

  I installed a BB Tri-Flo cat-back system on my 87 535is.
  The sound is great and there is an increase in power above
  5500rpm.  Down-sides:  The exhaust will boom a bit between
  2000-2700 rpm.  Otherwise great.  Don't be disappointed with
  the factor BMW exhaust.  It is actually quite good.  I would
  not take out the resonator.  It actually does perform a
  function.  It will keep the popping sounds to a minimum when
  decelerating.

  Hope this helps.

  Georg
  87 535is AKA MOCK5
  85 318i w/2.2L Metric Mechanic Motor

  Date: Thu, 12 Sep 2002 16:11:20 -0400
  From: "Ron J" <ron@domain.elided>
  Subject: <E28> Exhaust Resonator removal.. any issues?

  Hi All,

  Another question, this time regarding exhaust.  My muffler
  is starting to come
  apart and get a but noisy.  Again I have been thinking about
  an upgrade, but
  the E28 535i, is very limiting on the exhaust choices you
  can make since the
  muffler runs between the tank and the spare tire well, and
  therefore not much
  out there that is aftermarket will fit, except specifically
  designed BMW
  parts.

  So I am thinking custom job, and I noticed that if the
  resonator was removed
  in the location just after the catalytic,  it would allow a
  standard 2 in 2
  out muffler to fit, and then all I would have to do is get
  some exhaust pipe
  bent to run to the back of the car and terminate in the
  standard spot in the
  centre of the bumper.  All of this would be far less
  expensive than trying to
  find an aftermarket muffler that works in the stock location
  for the E28 535i,
  since the ones I have seen are very pricey, and most likely
  less expensive
  than putting in a stock replacement.  I want a slightly
  throaty sound as well.
  There are a lot of generic style performance mufflers out
  there that have the
  2 in 2 out configuration that would make use of the dual
  exhaust system that
  my 85 535i has, so finding a muffler that would work would
  be easy.  My
  concern is about the resonator, and if the removal of it
  would cause any
  problems, I.E Back pressure change, and if that would have
  any adverse effects
  on the performance of the car,

  Anyone have any input?  Thanks in advance

  Cheers

  Ron Jordan
  85 535i
  73 911s 2.7

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