vibration magnaflow catback exhaust

rrk

New member
Jun 21, 2024
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Newcastle, WA
Just installed the magnaflow catback exhaust couple days ago and right away I noticed a big increase in vibration in the footwell when driving in low rpm’s and it’s prominent from 1k rpm to 3k rpm when accelerating normally. I can feel the exhaust in the footwell when driving normally, which I don’t remember if the stock exhaust was like that or not. Honestly don’t remember.
Those who have this exhaust I wanted to ask if you guys are experiencing the same?
I torqued the downpipe spring bolts to 32lbs which is the spec from Lexus. And no part of the exhaust touches the car. Idk if there’s a slight exhaust leak or resonance from the exhaust in general. But the downpipe connection to catback is located right under the footwell that’s why I just wanted to be sure cuz I’m overthinking it.

EDIT: nvm I solved it! The center midpipe muffler clearance at the front is a little tight so I had to bend the heat shield, and that solved the vibration issue.
 

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Can you post a pic of where you bent the heat shield? Is that the second pic metal thing and you bent it towards the body?

I got this exhaust as well and they had to send me a new muffler because the first one had a leak in once of the welds. I can't remember if there was any vibration on acceleration with the stock but I would expect a little in a performance exhaust.
 
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