Alpinweiss exhaust v.3

[Rusty]

I'm plotting...

[re2500]

You're mad

[SteveH]

I agree, your mad

[Rusty]

It's just finishing off what I started to neaten it up visually and aurally and make it more MOT and trackday friendly.

To cut the bumper or not? I think not...

[Rusty]

Right, to illustrate my thoughts, here are a few designs. The aim is to improve over the current system by making the design more useable on track days and less of a potential headache at MOT time. I also want to get rid of the noise like a leak under the car and make the loud version a bit softer and less intrusive in the cabin, as the current design reverberates really badly under the car. There is also the fact that I don't like the exhaust exiting under the car and in front of the rear tyre, as it just seems like there are better options.

[Rusty]

System E is my favourite...

[Jamo]

Of those choices it has to be system E

[Rusty]

Aye, that's what I feel. Twin exhausts would be nice on a car that already had them... but the S2 doesn't.

[Pirvu Eugen]

I will choose D.... I think E...even with that silencer...will be loud. Just my thought...
with E...i dont think you will go much lower db than at ADI... lol...

[s2driveruk]

system E all day long, simple...the flow is not impeded and I really like the ability to open the valve on a single pipe but keep a dual exit (oem) look


Make it....

[Rusty]

I've emailed Prospeed so see what they say...

Was only 94dB with the valve closed and 98dB with it open... just measured from the are end Just don't want it to sound like a tractor at idle and give so much vibration in the cabin.

[Ian Simmonds]

To be honest I'm a bit confused and can't really grasp what you are trying to achieve.

The Rallyrep's running an AAN, with a single rear box, on a complete 3" Scorpion Ur system, with no cats and it's under 98db, the normal trackday restriction.... Its fine for longer runs too. Are you just after more noise for the street rather than a Motorsport advantage?

[Rusty]

Redesign of my current system to give quiet cruising and loud on power.

[Sleeper_Avant]

System A for me,

building loads of big power jap cars with exhaust butterflys previously i know what this setup is capable of.

dont cut the bumper, just point it to the floor before the bumper, thus better on sound reduction also

[Ian Simmonds]

Redesign of my current system to give quiet cruising and loud on power.

Okay doakes, cool... I was degenerating into the Motorsport world of weight viruses performance gain there.... Sorry....