MP3Night
MS3,Mazda3,MSP
they'll be fine...the powerband just didn't stop...unlike having your power die off around 4K rpms, you can keep your foot in the gas all the way to redline. all of my cars have been DD's...i've never had a problem. if there is a loss down low, it isn't much at all.
Did you install them your self or a shop do it? if you did was it fairly easy but took a day to do? And does it add a different tone to your engine and exhaust?
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