85 replies to this topic

[Zac]

HI ppls...

I have MY03 Subaru Liberty B4, (auto) and it has a 3" TBE from when I bought it...

I think the previous owner for it done at MRT in Sydney...

Anyway, over the weekend, I was cruising at about 110km/h on the motorway and there was quite bit of noise in the car, like drone..

I was wondering if this is normal since it is a TBE, or is there something up with it.


Would getting a new muffler put on there help with this? Since I don't mind a little noise at take off and idle, but not the constant drone while cruising...

Anyone know anything about this?

[nickknack]

Yes new muffler will make all the difference, or you may just need to add in a hotdog. Also in response to your post in the GT, there is no way a tune will alter the mechanical diff ratio. You're stuck with 2.5k rpms @ 100km/h or whatever the auto has

[Adam]

Min sits at 3200rpm on 110

with a 3" tbe, one hot dog, and an mrt muffler. Quiet as fark on the cruise

[Dimeb4g]

My auto b4 sits at 2700rpm at 110... No tbe but diff back and no drone at all...

[Dimeb4g]

My auto b4 sits at 2700rpm at 110... No tbe but diff back and no drone at all...

[Josh.]

It all depends on the muffler. My 3" TBE has no resonators and with a cannon it drones like crazy but with a Hi Tech oval muffler it is very quiet at 110.

[Zac]

Thanks guys... looks like a new muffler it is for me... thats fine... I was going to change the tip anyway on my car, since it was looking a little burnt out, so I will just change the whole muffler... hope it doesn't cost too much...

Any suggestion? I still like the boxer rumble on idle and take off, but not when cruising....

I don't mind the 2700rpm when 110km/h.... I expected that, better than my 1.8 Lancer.. LOL!

[Samwise]

Thanks guys... looks like a new muffler it is for me... thats fine... I was going to change the tip anyway on my car, since it was looking a little burnt out, so I will just change the whole muffler... hope it doesn't cost too much...

Any suggestion? I still like the boxer rumble on idle and take off, but not when cruising....

I don't mind the 2700rpm when 110km/h.... I expected that, better than my 1.8 Lancer.. LOL!

What kind of muffler do you have?

[Cam.]

The auto will always drone. Get a custom diff-back made up that's 3" into 2.5" with a generic muffler and a sti tip or tip of your choice.

Will look nice, Rumble under load and be quiet-ish off load.

[Zac]

The auto will always drone. Get a custom diff-back made up that's 3" into 2.5" with a generic muffler and a sti tip or tip of your choice.

Will look nice, Rumble under load and be quiet-ish off load.

Thanks Cam....

I have no idea what muffler I have on there now... all I know is the previous owner said its a 3" TBE, and the place he had his work does was MRT... so must have been one of theirs..

Auto will always drone hey? Damn that sux... well if I can reduce the drone to a decent level, I'll be happy with that.

Wouldn't a custom set up cost a fair bit? Not looking to spend too much, so was thinking a simpler muffler would work too... hoping more like it...

[Samwise]

Thanks Cam....

I have no idea what muffler I have on there now... all I know is the previous owner said its a 3" TBE, and the place he had his work does was MRT... so must have been one of theirs..

Auto will always drone hey? Damn that sux... well if I can reduce the drone to a decent level, I'll be happy with that.

Wouldn't a custom set up cost a fair bit? Not looking to spend too much, so was thinking a simpler muffler would work too... hoping more like it...

See if you can find a standard muffler.

I haven't heard a single good thing about MRT exhaust's. About 80% of people I know, who've had MRT power enhancement done, have said the car sounds crap afterwards.

[Cam.]

I think MRT mufflers are fantastic.(About the only thing i like from them, lol)

Post pics and we will be able to figure it out.

As others have said, It may even be fixed with a resonator.

[Samwise]

I think MRT mufflers are fantastic.(About the only thing i like from them, lol)

Post pics and we will be able to figure it out.

As others have said, It may even be fixed with a resonator.

Each to their own I guess. It's probably because most of them are my Dad's mates who have retired and have gone and bought Gen 5 GT's and Forester XT's. Must be the old ears

[Zac]

Here is the only pic I have now of the back of the car, but if I can tomorrow morning, I will try to take a better pic before I go to work... Can't tell from this pic... lol

[Samwise]

Looks like the standard one from this angle..

[Zac]

Looks like the standard one from this angle..

Hmmm might be... I don't know... will try to take a better pic of it tomorrow... Also might take it down to the local exhaust shop down the road and see what he can do for me...

[Dimeb4g]

My auto doesn't drone... All of my liberty's have been auto, all have full systems bar this one... And no drone...ever... The last 2 exhaust I had were xforce... I had a generic thing on my na heritage with uel... And it sounded tough on idle, roared on take off and superb on the highway... And I did lots of k's in it...

I now have an mpo2 on referral from some of the guys on here... Highly recommended!

[Zac]

Thanks for the reassurance... Just not a fan of too much noise at cruising speed...

Here are some images of the exhaust I got on my car...






Hope that helps someone identify my muffler... looks stock-ish to me...

[aekOne]

that a pretty skinny cannon. no wonder it's so loud

[Zac]

Ahhh ok then... so do you think new muffler would be good? Any recommendations?