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CCCLXXZ · 08-04-2009, 10:45 PM

Fair enough, the general consensus would point you to GRD (Genesis Racing Development) for tuning on a COBB for the Chicago area. On the Sentra, there is a built in pre-cat on the header, hence the increase in volume replacing it with an aftermarket solution.

Enjoy

08-04-2009, 10:45 PM	#43 (permalink)
CCCLXXZ Base Member Join Date: May 2009 Location: Chicago Suburbs Posts: 164 Drives: T/S/MB/6 370z Rep Power: 401	Fair enough, the general consensus would point you to GRD (Genesis Racing Development) for tuning on a COBB for the Chicago area. On the Sentra, there is a built in pre-cat on the header, hence the increase in volume replacing it with an aftermarket solution. Enjoy