STI subframe - louder exhaust?
26 July 2019, 05:37 PM
#1
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Thread Starter
STI subframe - louder exhaust?
I had the crusty rear subframe on my bug WRX replaced with a lovely fresh powder coated one from an STI, with solid bushes where it mounts to the body.
When I picked the car up, the exhaust note is noticeably gruffer, with a more pronounced burble throughout the rev range. Is that kind of change in NVH typical when going from floppy old WRX bushes to solid ones?
There's an exhaust hanger on the subframe, so I'd imagine more noise is getting transmitted through the body, less vibration being absorbed by the bushes and it results in more noise?
Or am I talking out of my ****? 😁
When I picked the car up, the exhaust note is noticeably gruffer, with a more pronounced burble throughout the rev range. Is that kind of change in NVH typical when going from floppy old WRX bushes to solid ones?
There's an exhaust hanger on the subframe, so I'd imagine more noise is getting transmitted through the body, less vibration being absorbed by the bushes and it results in more noise?
Or am I talking out of my ****? 😁
26 July 2019, 06:34 PM
#3
I had the crusty rear subframe on my bug WRX replaced with a lovely fresh powder coated one from an STI, with solid bushes where it mounts to the body.
When I picked the car up, the exhaust note is noticeably gruffer, with a more pronounced burble throughout the rev range. Is that kind of change in NVH typical when going from floppy old WRX bushes to solid ones?
There's an exhaust hanger on the subframe, so I'd imagine more noise is getting transmitted through the body, less vibration being absorbed by the bushes and it results in more noise?
Or am I talking out of my ****? 😁
When I picked the car up, the exhaust note is noticeably gruffer, with a more pronounced burble throughout the rev range. Is that kind of change in NVH typical when going from floppy old WRX bushes to solid ones?
There's an exhaust hanger on the subframe, so I'd imagine more noise is getting transmitted through the body, less vibration being absorbed by the bushes and it results in more noise?
Or am I talking out of my ****? 😁
26 July 2019, 06:38 PM
#4
Scooby Regular
Thread Starter
About 8 hours all told. Two of the four bolts that attach to the body snapped and needed cutting free, and a couple of lateral arm bushes needed replacing. It could have been a lot more if all four bolts had snapped. Apparently it's always a pig of a job. Final bill was £500, excluding the subframe cost.
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26 July 2019, 06:40 PM
#5
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Thread Starter
I knew I was kidding myself... I've just had the majority of the system replaced, it was fine before. Do you think I have recourse to complain or will it just be 'one of those things'.
26 July 2019, 07:05 PM
#7
About 8 hours all told. Two of the four bolts that attach to the body snapped and needed cutting free, and a couple of lateral arm bushes needed replacing. It could have been a lot more if all four bolts had snapped. Apparently it's always a pig of a job. Final bill was £500, excluding the subframe cost.
thanks
Trev
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