10-24-2009, 08:54 PM
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#11 (permalink)
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Senior Member
Join Date: Oct 2001
Location: Aheville North Carolina
Posts: 1,882
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Quote:
Originally Posted by Beast
I have the 4" maganflow with 3.5"downpipe my drone with the chip under load was too much. I just put back on a new OEM system. Quieter but some drone under load with programmer. Weird. Anyway, I don't push it as much anymore due to cost of fuel so backing off a little due to temp is OK with me. I don't think it makes much difference with mpgs. Go with BTM first. Of course I now have two good exhaust systems a 4" Maganaflow with a flex pipe and a new OEM system.
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I have the Magnaflow as well and it was noisy with a bad drone then I added the cat back in it was so that the 4" pipes could be welded in and it solved the noise and greatly reduced the drone to only very high load conditions.
But I have a 6.0 with the cat so it is much different.
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