After having to deal with the dreaded droning that the straight pipe produce i decided to place back my old muffler w/o the kidney things. PEACE and quiet, there was less lagg on acceleration and the turbo spools a little slower but once is running at 2500 RPM just a little tap on the acclerator pedel and it spools up faster than when it was straight pipe and i lost 1 psi of boost. for those of you guys who has a 300SD and planning to do a straight pipe, i would suggest to just remove the resonator instead unless you like a bass like drone at 1500 RPM and a sweet turbo sound at idle than straight pipe it. Though I am starting to miss that sound

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi