16 replies to this topic

[cameron]

So my forester currently has an 3inch xforce dump, 3inch xforce midpipe with one resonator, and 3inch xforce mp02 rear muffler.

 

Now is exhaust is stupid loud and drones like a mofo on the highway. Its only a matter for time till highway or epa get me for it.

 

Question is how do i fix it.

 

I know i can add a middle 3inch muffler in place of the resonator but will that fix it?

 

or

 

Do i replace the mp02 with something. (i have no interest in a varex)

 

or

 

both i need to do both of the above?

[Tim.]

I had a very similar setup and it sounded like a motorbike was in my boot.

 

Exhaust shop welded a "reverse trumpet" inside the rear muffler to recirculate the sound back into the muffler. This cut down the noise significantly without impacting on flow.

[Josh.]

Maybe look into a Hi Tech? My old one was pretty quiet and didn't drone at all.

 

I know what you mean about how loud it is, I have the same system but without a resonator..

[cameron]

i have looked at hitech and its a good option but they want $700 for a diffback which is a joke

[Josh.]

fork that! No second hand ones around at the moment?

[cameron]

im on the hunt atm

[Morgan]

The Xforce is a loud muffler and I'd highy recommend the hitech if you can find a second hand one around... I love mine

Is there any more room for another resonator under there? Could be another option?

[cameron]

im going to keep a look out for a hitech from all accounts there great. if not ill get rid of the mp02 and have something made up with a magnaflow muffler

[Josh.]

I forgot to mention that the Hi Tech was good for just a diff back but was a bit raspy with a turbo back. Not sure if there was something wrong with mine or if they are all like that.

[Adam]

I have an mrt oval muffler on mine. (Alex can tell you about it) it's got a good note, but quiet ish on cruise. It's only got one small resonator in the rest of the system.

[cameron]

I have an mrt oval muffler on mine. (Alex can tell you about it) it's got a good note, but quiet ish on cruise. It's only got one small resonator in the rest of the system.

i had that on my old wrx. was the perfect muffler but rare to find for sale

[vicelore]

I think Im in the same boat. . Loud as fork

[U-Shell]

^^ lol just slightly!

[vicelore]

Yup lol

[cameron]

ive sorted my exhaust drone. purchased a stock sti muffler which has had the MSR 3 inch pipe mod done. quite like stock with no restriction and minimal if any power loss.

[vicelore]

Noted thanks for the update mate.

[dja]

Nice work.
My preference is a big 3inch inlet oval muffler from my local.
Forget MRT msr etc, a nice mercury is half the price and does the same job.