GR Yaris Tegiwa Exhaust test

Very nice of them to go trough the effort. Back-to-back comparisons using the same equipment are really useful.

However, I’m now quite sure I don’t want to change the exhaust.
 
Good video that.

I was set on getting a mongoose as the millteks are too raspy and loud for me. But leaning towards a fujitsubo and gpf delete after watching that.
 
I have the Legamax and that represents the sound nicely, but it’s definitely got louder now that it’s been on the car for 1000 miles or so. It’s enough that I run without the fake noise inside the car now. Ridiculously easy to fit on the driveway with the two bolt flanges and no slip joints. I imagine the Fujitsubo would be similar.

Would love to know what mine would sound like with the GPF delete too, but the MOT and insurance/legal implications make it a no go for me.
 
Legamax would have been my pick as well. But it’s a lot of money for an exhaust that has an ever so slightly fruitier noise with nice tips, but is also heavier.

I have to say the stock system has also definitely picked up some decibels now that it has a few thousand miles in.
 
I watched the entire thing despite having ordered an exhaust you weren't testing.

I am a JDM fanboy so I was never really interested in non JDM exhausts. In addition I think slip on systems are cheap and lazy and I wouldn't buy one.

Based on what I watched and heard, I would probably pick the HKS Super Turbo out of those. What the video did make me think about more was the OPF/GPF delete. Someone mentioned legal implications, are we saying that fitting this voids your insurance and wouldn't pass an MOT?

Incidently I have ordered the HKS Hi-Power Spec L system from Tegiwa. I don't think I will get it until April. I guess it's a more light weight version of the Super Turbo system they tested.

If I had to pick a slip on system it would probably actually be the Remus, at least, maybe 10 years ago I would of. I think the noise it makes could be quite entertaining but I might be getting a bit old for that!
 
nails84 said:
I watched the entire thing despite having ordered an exhaust you weren't testing.

I am a JDM fanboy so I was never really interested in non JDM exhausts. In addition I think slip on systems are cheap and lazy and I wouldn't buy one.

Based on what I watched and heard, I would probably pick the HKS Super Turbo out of those. What the video did make me think about more was the OPF/GPF delete. Someone mentioned legal implications, are we saying that fitting this voids your insurance and wouldn't pass an MOT?

Incidently I have ordered the HKS Hi-Power Spec L system from Tegiwa. I don't think I will get it until April. I guess it's a more light weight version of the Super Turbo system they tested.

If I had to pick a slip on system it would probably actually be the Remus, at least, maybe 10 years ago I would of. I think the noise it makes could be quite entertaining but I might be getting a bit old for that!
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It *should* in theory fail, yes, as it’s an emissions controlling device that’s been removed from a car that had it as standard. Obviously lots of people seem to do it, so I’m assuming it can be got around. I guess you don’t have to MOT it for the first three years, but personally I’d be too paranoid from an insurance point of view.
 
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MrJ said:
It *should* fail, yes, as it’s an emissions controlling device that’s been removed from a car that had it as standard. Obviously lots of people seem to do it, so I’m assuming it can be got around. I guess you don’t have to MOT it for the first three years, but personally I’d be too paranoid from an insurance point of view.
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Fit with a 'sports cat' and it would pass.
 
Bronson said:
Fit with a 'sports cat' and it would pass.
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Why? It’s lacking an OPF and the emission devices have still been manipulated.

It can pass a sloppy MOT with a straight pipe for all we know, but isn’t that beyond point? You really shouldn’t remove the GPF except for a track car. The GPF is there for a reason and it helps protect road users and pedestrians from harmful particles. These devices enable gasoline powered cars to be sold in the first place and soon we’re going to have a total ICE ban, if everyone keeps tinkering with them.
 
Philevo6 said:
Good video that.

I was set on getting a mongoose as the millteks are too raspy and loud for me. But leaning towards a fujitsubo and gpf delete after watching that.
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The Mongoose exhaust is a fantastic piece of kit. Very well made, sounds really nice with absolutely no drone & isn't asbo loud / won't pee off your neighbours. I'd listened to Cobra, C-TEC, Milltek, RS Fabrications and others before deciding on the Mongoose & IMO, it is still one of the best sounding if you want more noise than OEM, without it actually sounding like a rally car.

I appreciate that not everyone is on Facebook or a member of this group, but there is a good video clip in the attached link:


Unfortunately for me, my wife is making more noise about my exhaust, than the exhaust itself 😂 So, I have given in & have bought a quieter exhuast.

I will be selling mine in the next few weeks & will put up full details in a for sale post. Briefly, has been on my car for approx 2,500 miles & is like new.

If anyone is interested then please let me know.
 
Philevo6 said:
Good video that.

I was set on getting a mongoose as the millteks are too raspy and loud for me. But leaning towards a fujitsubo and gpf delete after watching that.
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That's the exact set-up I have. It pulls harder and sounds great under load. You barely notice it when cruising but when you floor it there is a noticeable grumble, suits the car perfectly without looking like you've just come from the parole office...
 
m00nigan said:
Do you have any more info/images of this system? H&S are legends in the old Subaru scene. In fact my STi has an H&S system.
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Sure. I'm really happy with it. I get lots of positive comments from other owners at track days. I just wanted the performance without too much noise.

To keep on topic it's most like the HKS I guess with the twin rear box. I do have a video but this site doesn't accept the format.

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Glad you like it guys. I kept the Fujitsubo with GPF delete on the car and I'm very happy with it. The Milltek resonated would probably have been my choice if I wasn't deleting the GPF, or maybe the HKS Super Turbo if I could stretch to it.

There might be an airbox test coming in the not-too-distant future which will include power figures, but we are still thinking about how best to do it fairly. Probably leave the car on the rollers and fit the airboxes one after the other, then do a sound test after. Would make for a f***ing long test but would be a good one :D
 
Legamax really is what the car should've sounded like from factory.
 
Sam said:
Legamax really is what the car should've sounded like from factory.
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I’m a bit biased because I have a Legamax fitted, but I agree. OEM+, fruity and with a nice deep burble at idle. Then again, I’ve seen people say it should sound like the Miltek Non-Res from factory, so what do I know 😆
 
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