RS2 Spec 3b Center Section Question ?

[ian4455]

My 3b RS2 spec to run 380 bhp, 3" downpipe fitted. I now need to mate this to the centre section of my exhaust, this is already stainless and has the two cat bypass pipes fitted.

I want to do this right and what is best for performance, Is it worth removing the 2 into 1 pipe section and replace this with a single straight pipe 3" to then tapper to the middle box which is 2.75". I hear that the 2 pipes are a restriction, is this correct ?

thinking the same as picture below..

[campbellWS]

4inch side exit out front wing haha
sorry not to help

[Error404]

probably easiest to use a single 3" pipe all the way through. The very best way to do it is using an oval section centre pipe which Hamish has done on his SQ as you do not loose any ground clearance, however its very difficult to make the transitions

[Dingo]

This is something I did on mine, I'm not convinced its that restrictive but every little helps and yes most of the gains are to be had from the front part of the exhaust as this is where the gasses are hottest, but apart from all that its just a better job as its neater / tider and lighter,
I ran a 3" into milltek center and rear (with no cat) it does sound nice, not loud or boomy at all and does spool up a bit quicker.