Improving Standard Silencer exhaust boxes

[maverick]

Hello Stag folks

Im always looking for subtle non visible improvements for my cars,performance and otherwise.

After watching a Youtube video of a guy modifying M3 silencer boxes
(the internals),he cut out a window from above so not visible from below,for obvious reasons,worked his magic and then welded up the flap.
The idea was to try and improve the lacklustre sound of the BMW V8,it was a greatb improvement
I thought Has anyone else had the Stag silencer apart ,whats inside ? and got any ideas for improving gas flow and maybe tweaking the sound.
Although a load boomy sound is definately not what Im after.
I heard straight through boxes and think is too load for me,although would be nice to hear from anyone with a straight through system if there was any perfomance gains,

Thanks in anticipation
Mark

[new to this]

Mark

Tony Hart has already made straight through exhaust boxes,I made my own boxes for the Sprint,and will do the same for my Stag

Dave

[maverick]

Mark

Tony Hart has already made straight through exhaust boxes,I made my own boxes for the Sprint,and will do the same for my Stag

Dave

Hi Dave
What sort of internals /filling do you use?

[new to this]

I used acoustic loft insulation

[maverick]

I used acoustic loft insulation

Thats interesting Dave,
I was thinking wirewool,

Do you just pad this around the pipe that runs through the box?

Do you get a power increase with your unit over standard?

Cheers

[jbuckl]

Tony’s are just right imho. But I’m a bit deaf.

[stag8manod]

I used S/Steel scrubbing pads, the round donut type and threaded them over the internal pipes before fixing the end caps on. Spitfire 1500,twin rear mufflers. I haven't needed to touch the Stag.
Cheers Ian A

[Phil S]

I have a left and right system no link pipe with straight through boxes. Pipe work is 2 inch exits via 4 tailpipes. Stainless headers ceramic coated, feels like its improved performance, yes it loud especially on kick down (jag 4 speed), system built by vortex in grays.
not to everyones liking, but it is to mine.

[new to this]

Thats interesting Dave,
I was thinking wirewool,

Do you just pad this around the pipe that runs through the box?

Do you get a power increase with your unit over standard?

Cheers

Hi mines not a standard system,i went 2 inch bore all the way ,i keep my insulator tightly wrapped as i didnt want it too loud

Dave

[maverick]

Tony’s are just right imho. But I’m a bit deaf.

[maverick]

Hi mines not a standard system,i went 2 inch bore all the way ,i keep my insulator tightly wrapped as i didnt want it too loud

Dave

Hi Dave,
Any desernable imrovement in performance

[dasadrew]

I have a left and right system no link pipe with straight through boxes. .....yes it loud especially on kick down ....not to everyones liking, but it is to mine.

Whilst I can full identify with this (only reason I bought the Aston was to hear the exhaust!) it unfortunately probably generates more Snowflakes who want us off the road for good

[sujitroy]

I met a guy who had a nice Ford Mustang Cobra here in US. It sounded very mean. He pressed a switch and it sounded meaner. He added some part in the exhaust system which basically opened a valve to let the gases to escape at a different part of the system. Have you thought about that?
Sujit

[maverick]

I met a guy who had a nice Ford Mustang Cobra here in US. It sounded very mean. He pressed a switch and it sounded meaner. He added some part in the exhaust system which basically opened a valve to let the gases to escape at a different part of the system. Have you thought about that?
Sujit

Hi Suj,
I know of manufactures that do this inc Ferrari and I think Lamborgini,I am far lacking the skills to impliment this ,but thank you