[W126 Coupe] Free at last

[Divov]

Hi Richard,

Interesting as I did the opposite.
I removed the 2 resonators and used a straight thro' box at the back. 
I register about 7 to 10 kph more on the race main straight since doing the change.
Surprising that it isn't very noisy either. Could drive with it like this on the street. 
Sounds glorious when you put foot.

Alec D.
'84 500 SEC Euro
----- Original Message ----- 
  From: richard jaffe 
  To: MBCOUPES at MBCOUPES.COM 
  Sent: Saturday, May 19, 2007 9:15 PM
  Subject: [W126 Coupe] Free at last


  Guys,

  Finally got around to having the cats cut off and replaced with two sections of straight 2.25 in. aluminized pipe. So now I only have the two OEM resonators under the rear seat pans doing the muffling since I did not replace the old rusted out rear OEM muffler but ran split duals out the back instead. BIG DIFFERENCE! Acceleration definitely improved - now get that pushed back in the seat feeling as opposed to a leisurely gathering of speed.
  Good sound too. Nice rumbly V8 noise - very muscle carlike - but not too loud.

  Internet research led to a company in California called Spin Tech making mufflers for race car applications but now making street applications as well. They make a split case reverse flow muffler (inlet and outlet on same end) which is the same design as the OEM resonators. (C5 Corvette uses this design as well). The dimensions are 4"h x 9"w x 13"l which approximates the size of the resonators. So I'm thinking the next step will be to replace the resonators with the Spin Tech mufflers. The company claims superior flow rates and sound to competing performance mufflers (Magnaflow, Borla, etc..) so I assume superior flow rate and sound over the OEM resonator.

  Anyway, its nice to experience these cars as the engineers intended - cat free!

  Rich Jaffe
  85 500 SEC Euro 260k
  83 300 SD  195k


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