Hey guys I was wondering if anyone has experienced a feeling of loss in power in the upper rpms just above 4k. It pulls right up until then pretty hard, then it stops and starts making this rushing sound like someone out of breathe. It becomes just as loud as the engine. I have had the procal on it for the last 7 thousand miles with no problem until now. If anyone has any info or any help for me I'd appreciate it immensely. Thanks.
Sent from my SCH-I535 using Mustang Evolution mobile app
Check the rest of the pipes and connection up to the throttle body, including all hoses.
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