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      05-10-2012, 08:31 AM   #10
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Rich@GTBPerformance's Avatar
Drives: 2011 E92 JZB M3, 2000 750iL
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Originally Posted by DEV M3 View Post
What is the power difference between the street and sport? Is it worth it to get the HFC's? I plan on getting a tune...
You'll get a mild power increase and better throttle response.

The key is that the cats are located further down the exhaust stream allowing the exhaust to hit the catalysts at a higher velocity. The tune will also eliminate the CEL that you get from relocating the primary catalysts.

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