Exhaust suddenly became raspy - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

godbiggy · 07-20-2020, 08:05 PM

Hey all I am currently running Tomei UEL headers and MXP comp RS everything else is stock, with a pop tune.

It's been about 6-7 months driving and everything is great, I parked my car like usual in garage and all of a sudden the next day my car sounded as if I had a catless frontpipe which sounded so raspy and loud. I also noticed my cars exhaust was dripping so much water from the tips and backfiring much louder than normal.

After driving for maybe 20-30mins the sound became more normal to my standard sound.. however, it still had a tiny rasp.

My question is... could it be an exhaust leak? or do exhaust leaks sound different... it just confuses me how it goes back to normal once heated up

**It shouldn't sound like this**

https://streamable.com/ag27ww

*This is the normal sound**
https://streamable.com/6wxmpr

Gloonge · 07-20-2020, 08:08 PM

Definitely an exhaust leak. It goes mostly away when everything heats up.

JohnH · 07-30-2020, 04:36 PM

if you have a "pops and backfires" type tune, you are putting raw fuel in your exhaust and its burning there instead of in the engine. It can damage exhaust components, especially cats

07-20-2020, 08:05 PM	#1
godbiggy Member Join Date: Jul 2019 Drives: 2015 Subaru BRZ Location: Canada, Ontario Posts: 12 Thanks: 2 Thanked 2 Times in 2 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Exhaust suddenly became raspy Hey all I am currently running Tomei UEL headers and MXP comp RS everything else is stock, with a pop tune. It's been about 6-7 months driving and everything is great, I parked my car like usual in garage and all of a sudden the next day my car sounded as if I had a catless frontpipe which sounded so raspy and loud. I also noticed my cars exhaust was dripping so much water from the tips and backfiring much louder than normal. After driving for maybe 20-30mins the sound became more normal to my standard sound.. however, it still had a tiny rasp. My question is... could it be an exhaust leak? or do exhaust leaks sound different... it just confuses me how it goes back to normal once heated up It shouldn't sound like this https://streamable.com/ag27ww This is the normal sound* https://streamable.com/6wxmpr

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07-20-2020, 08:08 PM	#2
Gloonge Senior Member Join Date: May 2016 Drives: 2013 frs raven Location: W.P.B - Florida Posts: 224 Thanks: 5 Thanked 54 Times in 40 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Definitely an exhaust leak. It goes mostly away when everything heats up.

07-30-2020, 04:36 PM	#3
JohnH Professional wrench Join Date: Jun 2020 Drives: 2020 BRZ ST RS Location: BC Canada Posts: 117 Thanks: 58 Thanked 39 Times in 29 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	if you have a "pops and backfires" type tune, you are putting raw fuel in your exhaust and its burning there instead of in the engine. It can damage exhaust components, especially cats

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