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Old 12-28-2018, 10:04 AM
78w72 78w72 is offline
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Join Date: Nov 2007
Location: iowa
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Quote:
Originally Posted by Formulajones View Post
Yep, and I've never found that to be the case with any car I've used them on. If you want a quieter Pypes muffer, go with the street pros.
every car must be different, some say racepros/ultraflo's have drone, some don't.

the one set of street pros ive heard were on a 2.5" pypes X system with small hedman headers & ~425hp, they were noticeably louder at idle & lower rpms than my race pros with 3" pypes X system & big hooker super comp headers. the street pros had that flowmaster chambered sound.