GR Yaris (Gen 2) Tom's Gen 2 Manual

Tom6R4

New member
Jan 7, 2025
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Hi,

Ex Gen 1 owner and now have a Gen 2 - safe to say I've caught the GR bug and owned a GT86 before my Gen 1. My Gen 2 was delivered in December 2024 and I have been really happy with it.

Glad to see Toyota are still making improvements to the car with latest updates but for me there's only been one thing missing and that's engine/exhaust sound. In my Gen 1 I actually liked the ESE and found it added to the driving experience. I would have preferred for the sound to be "real" but I wasn't too bothered. My Gen 2 is a manual (UK spec) and I was surprised that there was very little ESE present and I found it difficult at times to know where I was on the rev range. I spend most of the time driving in sport and find the rally tach display great.

On my last service I asked Toyota to investigate settings to see if something could be turned up but I was told it was a no go - see "option sheet" below that stated no ASC. Not sure how much effort they really put into investigation. After trying Carista and not being able to see the options, I've gone down a more expensive route and have recently fitted a HKS Super Turbo Muffler (GPF back) system. I've noticed that the Gen 2 version of the exhaust lacks the silent resonance chamber that was on the original system. I'm really happy with the design and sound of the exhaust from the outside of the car but a little underwhelmed by the sound on the inside which was my main reason for purchase.

From 2,000rpm I notice a deeper note but I wouldn't say it's that pleasant. Below 2,000rpm it sounds pretty standard inside the car - I've only put ~50miles on new exhaust and hope that with time I'll start to hear richer/higher frequencies in the cabin. Right now I am unsure whether the absence of the silent chamber, new exhaust or presence of ESE/ASC type system is the culprit. It may also be that I was expecting too much from the exhaust. Interested to hear if anyone else has had similar experiences or found a way to confirm/tweak ESE/ASC settings on a Gen 2 UK spec manual.

Cheers,

Tom
 

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Hello fellow gen2 owner :)

I fitted the same exhaust on mine, manual too, only difference is the urban matte finish which I preferred. The sound opened up quite a bit after a couple hundred km's, and overall the sound is very dependent on temperature, get some proper heat going through it and it'll sound very different from cold.

But HKS is a rather conservative choice compared to other brands like Miltek, it's clearly an OEM+ upgrade rather than a rally-esque wake up alarm for the whole neighborhood :p
 
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Hi and thanks for your advice. After ~500miles I am much happier with exhaust. It certainly does sound better with the mileage and some heat in the system.

I was concerned with getting a louder exhaust as the starter button is pressed reasonably early Monday to Fridays 😂. That said there’s still a good volume on cold start 🙂