Deciding on RS2 Custom Exhaust Shape - Need Underside Photos of RS2 Exhaust!

[UUUdirs2newcastle]

I am trying to see how AAS exhausts are going to route my exhaust to the downpipe. I need it to go as far forward as possible, even past the cats, and have a new cat made up. I do not want to mess around with the downpipe until my new Exhaust Manifold is fitted, but still want the Custom System made as complete as possible.

Is there a downfall of running the car with NO CATS, once the car is remapped to suit my setup?

Has anyone got a photo of the standard exhaust setup from underneath?

[david]

is this any good

[GazzaG60]

heres how it goes and the woes

You can have the back toward the front made to the cats where its a y. under the car you can see the bracket that holds the y up. have it made to here. the cat section have it made with 2 flanges and a bypass pipe made. then the downpipe with aflexi at the bottom.

this way you caqn refit the cat (sports cat) for mot. bear in mind a 3" cat can onyl support around 400hp.

make sense?

[Jamo]

heres how it goes and the woes

You can have the back toward the front made to the cats where its a y. under the car you can see the bracket that holds the y up. have it made to here. the cat section have it made with 2 flanges and a bypass pipe made. then the downpipe with aflexi at the bottom.

this way you caqn refit the cat (sports cat) for mot. bear in mind a 3" cat can onyl support around 400hp.

make sense?

3" cat can support way more than 400 bhp at 100 cell

[A80Avant]

i thought usually cats are way more than 3''. Mine are 200cell but are something like 4''

[Jamo]

i thought usually cats are way more than 3''. Mine are 200cell but are something like 4''

We're referring to the inlet and outlet pipe size

[A80Avant]

aaaah,
i see.
i think then the option of 2 cats is better! 60mm each and no problems. A bit more expensive, but less restriction than having one cat

[madpugger]

heres how it goes and the woes

You can have the back toward the front made to the cats where its a y. under the car you can see the bracket that holds the y up. have it made to here. the cat section have it made with 2 flanges and a bypass pipe made. then the downpipe with aflexi at the bottom.

this way you caqn refit the cat (sports cat) for mot. bear in mind a 3" cat can onyl support around 400hp.

make sense?

Exactly my plan, I am fed up changing the downpipe!

[GazzaG60]

my cat advice on supported HP was from 2 cat manufacturers. i went with 200 cell. no point it not passing. or having to wing it.

[Rusty]

100 cell passes OK, just needs to get hot.

Wouldn't do to much to the RS2 DP and cats as you'll be able to sell them on to an ABY owner for a reasonable sum.

If you're not worried about this then get the bottom of the RS2 DP sleeved to 3" and then a sports cat, I think mine's 5" bore, and then a straight through 3" pipe to the rear box with the option of a centre box, I just have 1 box and it's not too loud with a 2.5" drop on the rear axle (coupe only).