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2003 Sequoia Limited 4x4. Installed Magnaflow cat back exhaust system and Aem cold air intake. Since install engine rattles under load (passing, going uphill). Any ideas why this is happenning?
 

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Engine rattles? I'm sure you've checked for loose connections on your intake and or exhaust? Can you be more specific on the rattle sound? Does it sound like a manifold leak?
 

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It sounds like its spark knocking. If you know what I mean. It only does it when I get on the gas. It didn't do it with just the exhaust, it only started after I put the intake on.
 

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Are you sure it isn't normal engine noise that's more noticeable with the new intake? The factory intake tube acts as muffler for intake noise. Since installing my Volant CAI, the engine noise is much louder. It is most noticeable under load @ 3k rpm and above.
 
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