Car bogs and runs rough on 2003 Ford Focus SVT

Well, the intake makes a rattleing sound I bought a new one it sounds like a WRX but still has trottle problems. It bogs down and as soon as it hits 3000RPMs it rattles still I need help its giving me a damn headache. and Chiltons manuals all exclude the SVT.

by in Wahiawa, HI on March 13, 2010
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1 answer
ANSWER by , July 22, 2011
i have a 2003 ford focus svt and i have the same exact problem...just started doing it one day. still trying to figure out the problem