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american racing headers and gmmg

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Old 01-11-2009, 06:42 PM
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Default american racing headers and gmmg
I have a gmmg exhaust currently on my ws6 and am looking to buy a set of american racing headers and y pipe. Any suggestions as to soundwise if I should run cats or not. thanks
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Old 01-11-2009, 08:47 PM
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I run cats on my ARH set up. I think they sound better. Im not a big fan of raspy/crackling sounding exhaust.
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Old 01-12-2009, 12:18 AM
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yeah i hear that no cats with headers and gmmg dont mix
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Old 01-12-2009, 07:56 AM
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I have the catted Y with my ARH/GMMG setup. There's still a bit of rasp with my setup between 2000-2600RPM if you're on it a bit.

On the dyno
http://www.youtube.com/watch?v=_vvO7V1CHz0

Drive-by and idle.
http://www.youtube.com/watch?v=UpUYd9CaUZA
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Old 01-12-2009, 08:59 AM
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I have GMMG with QTP LTs, Custom Kooks O/R Y, Flowmaster Merge

Yes i too have rasp betwwen 2K and 2500 RPMs. I will be installing a PowerPack in the I pipe come spring time



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Old 01-12-2009, 07:27 PM
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I run cats with my gmmg. I like it and get a lot of compliments on it.

There still is some rasp around 2k as stated above
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Old 01-13-2009, 05:44 PM
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Both cars sound great...Already have the GMMG, looking to add LT's hopefully in the near future.
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