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      10-07-2008, 10:19 AM   #16
Omar@ActiveAutowerke
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Drives: E92 M3
Join Date: Feb 2007
Location: Miami

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Quote:
Originally Posted by Sticky View Post
When going catless is there a drop off in low end torque by not running primary cats off the header?
No there was no drop off in torque. We tested a design with larger piping which resulted in a slight drop off in low end torque. We opted for this final design to increase peak HP and to maintain low end torque.