Cochezz

Just finished installing a Bursh header and Cat bypass pipe. The car is very raspy sounding now.

Looking for ideas on replacing the rear muffler with something different. Anyone have sugestions based on experience. Looking for a deeper sound.

Also is the Porsche OEM muffler straight thru? anyone ever cut one of these apart? is there any performance gain in using something else or just sound.

Thanks

F40LM

Suggest you try the SLP Mustang resonator addition. It makes a world of difference. I can find the PN if you need it. I added it along with a generic 'turbo' muffler and it sounds nothing like a Honda or a ricer. My set up is deep but loud however. Some have said it sounds like a mean '80s 911 6 cylinder. I am considering going back with a stock style muffler with a electric activated bi-pass valve for those days I feel like a bad boy.

michael

Reimu

Just put on a glasspack

A lot of people here swear by borla (xr-1)?

AlphaOmegaPower

Can you film the sound?

V2Rocket

resonator.

odurandina

this; ^

you need a resonator and a large glasspack muffler....


despite that, in the overall scheme of things, the 968 variocam engine is still little more than basically an underpowered moneypit, to those who've heard this exhaust in the flesh, and while the video below, can't really hold a candle to the actual sound — the truth is out there..... and to learn how to make your engine sound bigger and cleaner, start @ post #42....

https://rennlist.com/forums/924-931-...-heaven-3.html


(mine)...




and a couple of 2.5 owners who ran this setup....




conclusions;


1. 2.5 litres is still a bit on the small side. in the end, it's hard to make it sound like 3 or 4 litres, but with the correct combination can be made to sound pretty good....

2. with the correct combination, 3.0 litres with variocam engaged can be made to sound like a 4 cylinder engine unplugged.


3. all that being said, overall, in the thrill/$$$$/mile, these four cylinder engines are what they are—
money pits offering mediocre sound and performance.


.

Fara

Ask about exhaust sound, get diatribe about how you shouldn't bother with the engine.

<3 Odurandina

odurandina

if you have a discussion about the sound without talking about the engine, then the discussion is incomplete.
you have a decent design with some serious flaws.... then you try to get a nice exhaust note from it....



VR Alexander's GT (a RL'er before his passing)....

ZR8ED

I had a bursh header and cat delete with a stock catback, and I was embarrassed to drive it due to the honduhhh sound. I put a cat back on the car to mellow the sound, until I install my turbo catback with a magnaflow resonator.

Meine44

IMO replacing the stock exhaust manifold with a header is where you ruined the sound. You can't just slap bigger pipes at the front and at the back of the exhaust system. This will cause a difference in pressure throughout the system. For better performance (and sound) you need to have relatively unchanged pressure from when the gases get from the engine to the end of the exhaust pipe.

You need to increase the diameter of the whole system. Try upgrading to a 2.5" or 3" exhaust system.

Meine44

And I forgot to mention, increasing the diameter of the whole system will eliminate the need for a resonator or glasspack.

No matter what you do, both of those things will sound like rice burning.

V2Rocket

Best improvement to the engine sound is by adding cylinders to the engine

5-cylinders sound sweet....

Fara

3.5 Cylinders sounds terrible.
Just FYI.

odurandina

8, 10, 12 cylinders just turns the damn car exotic....

now, obviously, guys run the most hideously obnoxious exhausts with their hot rod corvette engines.

but, it doesn't have to be that way.....


and the ideal sized pipe for a 944 is 2.25".... 2.5" pipe (absolute max) is already very big.

dmcampbell

Magnaflow on my '88 TS with a Lindsey 4 inch exhaust, no cat, no center muffler, sounds great.