3b to rs2 downpipe

[s2driveruk]

Had a good search but not found the answer so....does anyone know if the 3b downpipe can simpley be exchanged for the RS2 version? I know cat placement is different but not worried about that bit, more the case of placement behind the K24 and subframe clearance?

Cheers
David

[Acidburn]

I'd have thought it would bolt on close enough/fine behind the turbo and go down fine to where it would be behind the engine/next to the gearbox but then you'd need to either have the split section removed or have a section made up to join it back into yours, probably easier to have the split removed and have it go into a flexi join then into your current rear section.

[s2driveruk]

Yeah thats the plan, stick a flexi on and then one sport cat and single pipe run to the rear. Prospeed said they would modify the downpipe free of charge

[Rusty]

We can have a trip to Pro speed together! I'd have hoped that it was just a case of bolting it on and then having it modified, the 6 speed casing should be larger so clearance should work fine, the subframeis pretty much the same shape, it's just the placement of the transmission mounts that differs and from memory they're clear of the exhaust by some way anyhow. JDI!

[s2driveruk]

thats the plan Sir Casey......though £730 for a 3in turbo back was quite tempting

[Greg_S]

AFAIK the RS2 downpipe wont be a straight fit since the Y pipe configuration differs between 3B and ABY/ADU

[newsh]

On a 3B you don't need a cat.

[slow2]

AFAIK the RS2 downpipe wont be a straight fit since the Y pipe configuration differs between 3B and ABY/ADU

[FITZY]

On a 3B you don't need a cat.

I'm pretty sure his car is a few days the wrong side of the cut off date

[s2driveruk]

yep thats right....4 days

[Jamo]

On a 3B you don't need a cat.

True but then the question is is the downpipe a straight swap and the answer is no because of the cat positions

So the cats would have to be also modified.

Personally I'd use the Rs2 downpipe cut of the Y section and get a new centre section with single cat.

[s2driveruk]

@jamo....thats the plan, take advantage of the larger diameter of the d/pipe and then just use a single 100cpi Rossi cat in a single pipe.... Seems to me i then get the benfit of extra gas evacuation capability early on from the turbo, get rid of the restrictive Y and 2 cat arrangement and then keep the extisting setup after the currents cats once they go back to single pipe.

I think then my system would be a 2.75in all the way which with my budget limitaions means that i am ok to probably mid 300 horses so should be efficient at about 300 which is where i am going to max out at the moment.

Other option is to sell the cat back longlife i currently have which is a decent exhaust and then get all new off the bottom of the Rs2 downpipe...

[Rusty]

The sports cat and system should be about £500 so not the end of the world, perhaps they can cut the DP at the base and then weld to that? Best of both worlds then, OE fit DP and high flow cat to keep the ponies galloping