Greddy Evo3 - Rattle at 2k RPM under load
07-22-14, 09:00 AM
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Greddy Evo3 - Rattle at 2k RPM under load
Hi all,
I have a 2013 IS250 F sport and had a Greddy Evo 3 axleback exhaust put on this weekend. I noticed that I'm getting a rattling sound from somewhere behind me in the car whenever I'm around 2k RPM and the engine is under load (going up a hill, for example). The sound disappears when above or below 2000 RPM.
I tried free revving it in neutral and the sound cannot be reproduced. At first I thought it was interior plastics rattling from resonance/drone but I had my girlfriend sit in the back and she says it sounds like it's from underneath the car.
So later, I went back and wiggled/moved the exhaust around and there isn't any contact that Ican hear. Where else should I check?
I did reuse the OEM gasket between the mid pipe/axleback since greddy only provided 1 gasket (used it for between the left and right mufflers). Could it be the OEM gasket?
I have a 2013 IS250 F sport and had a Greddy Evo 3 axleback exhaust put on this weekend. I noticed that I'm getting a rattling sound from somewhere behind me in the car whenever I'm around 2k RPM and the engine is under load (going up a hill, for example). The sound disappears when above or below 2000 RPM.
I tried free revving it in neutral and the sound cannot be reproduced. At first I thought it was interior plastics rattling from resonance/drone but I had my girlfriend sit in the back and she says it sounds like it's from underneath the car.
So later, I went back and wiggled/moved the exhaust around and there isn't any contact that Ican hear. Where else should I check?
I did reuse the OEM gasket between the mid pipe/axleback since greddy only provided 1 gasket (used it for between the left and right mufflers). Could it be the OEM gasket?
Last edited by cdo221; 07-22-14 at 09:23 AM.
07-25-14, 11:40 PM
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same problem here lol. At first I thought that's normal after you just installed it but its been more than a month now so I'm planning to get a midpipe hoping that loud resonance will go away or at least quiet down but if not, I'm gonna sell my exhaust and get a Greddy sp elite or F sport.
07-26-14, 07:11 AM
#3
i had it for a few months, but never had the rattle problem
unsure if improper install or defective product?
i miss my evo3, my favourte sound out of all the 2IS axlebacks...but the drone was unbearable...lately been thinking of getting it again and doing a custom midpipe to reduce the drone (awd)...
unsure if improper install or defective product?
i miss my evo3, my favourte sound out of all the 2IS axlebacks...but the drone was unbearable...lately been thinking of getting it again and doing a custom midpipe to reduce the drone (awd)...
07-27-14, 08:25 PM
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i had it for a few months, but never had the rattle problem
unsure if improper install or defective product?
i miss my evo3, my favourte sound out of all the 2IS axlebacks...but the drone was unbearable...lately been thinking of getting it again and doing a custom midpipe to reduce the drone (awd)...
unsure if improper install or defective product?
i miss my evo3, my favourte sound out of all the 2IS axlebacks...but the drone was unbearable...lately been thinking of getting it again and doing a custom midpipe to reduce the drone (awd)...
07-31-14, 09:38 AM
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UPDATE: Solved the rattling. Had my coworker sit in the car driving up and down hills for 15 minutes. Turns out it was the rear ash tray/storage slot (just below the vents for the rear seats).
That compartment isn't complete solid when it's closed. When it's closed, there is still a bit of give and it can be wiggled back and forth a bit. I think what happen is the resonance is greater/louder at 2k RPM under load and it's just enough to cause the rattling sound. If I put my hand on the compartment and press on it, it goes away. I haven't noticed it since figuring it out - I guess that when I pressed it down it closed the compartment maybe that extra 0.1 mm that was causing the rattle.
That compartment isn't complete solid when it's closed. When it's closed, there is still a bit of give and it can be wiggled back and forth a bit. I think what happen is the resonance is greater/louder at 2k RPM under load and it's just enough to cause the rattling sound. If I put my hand on the compartment and press on it, it goes away. I haven't noticed it since figuring it out - I guess that when I pressed it down it closed the compartment maybe that extra 0.1 mm that was causing the rattle.
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