My volcano RS2 Avant

[Avantus]

Out of interest... I see that almost every RS2 project with different turbo has a 3" downpipe. Mine still has stock RS2 DP and it's even a bit dented up on the bottom. So I'm wondering if it would gain in spool (and perhaps top end) with a 3" one to join my already 3" decat exhaust, of if it's isn't a bottleneck at all?

Oh and 5th gear on a cool motorway from our way back home
It underreads a bit we found out, so that's pretty much 2bar.

[A80Avant]

3 inch downpipe will have some good effect on EGTs but i wouldnt expect a huge difference in spool

[Rocco]

i have the same Boost gauge as you mate¡¡ 2.5Bar just in case eh?

[A80Avant]

no, that boost gauge is how it comes like this. Everyone has the 2.5bar.

[prj]

I would not bother with a 3" DP/Exhaust with a K26 #6 hotside.

[Avantus]

Ok thanks for the input. Might do it in the spring, also to have a flexi part at the end of the downpipe then, to spare the turbo/manifold a bit.

100-200 real GPS km/h starting in 4th gear is around 10.3sec. In 3rd/4th down to 9.5sec. With me alone that is.

[A80Avant]

3d/4th is always faster.

sounds like my old 3071R times, although i have to go back and look at the PB runs way in the past to get a proper time.. will look later on

[Avantus]

Nice

Imagine having a DSG gearbox in these things... that would be FAST

[EspenW]

3d/4th is always faster.

Not quite... many turbo cars are faster using 4th only. The 3rd to 4th shift not only takes time in itself, but regaining boost takes a good while too.
I'm 0.3s faster 100-150kmh using 3rd vs 4th (2.68s vs. 2.99s), but 100-200 I'm considerably faster using 4th only as shift time and time off boost wastes much more than 0.3s. It all depends on the power/torque curve. However, peaky turbo or NA cars will often be faster using 3/4th as there is not enough power available at 100km/h in 4th (approx 3500rpm in our cars)

DSG would be fantastic though. A match made in heaven for turbocharged cars.

[Ross]

Some awesome results here, would have loved to have seen how it goes myself - I have a bit of an addiction to midnight mapping sessions now

Obviously 3rd/4th debate is going to depend on where your turbo kicks in and how much torque it produces. I must admit, mine is great in 4th at 3500rpm because by 3800rpm I'm seeing 2.2bar, would be interesting to get some times and compare (i know I keep saying that!) Are you using a K26/7 hybrid similar to mine?

[prj]

but 100-200 I'm considerably faster using 4th only as shift time and time off boost wastes much more than 0.3s.

If you had flatshift in your Motronic, that would not be a problem.

[Avantus]

@Ross: It's one of Richards latest K26/27's, so I suppose it's the same as yours?
No headwork at mine though, so def. no 450-460hp like yours.

Next problem popped up unfortunately. My PAS is perfect when cold,
but when warm it fails to give assistance when parking, with a juddering steering wheel. No noises from the pump, but it's started leaking. Oil is new, so that won't be a cure. At first it was only when turning right, but on warm standstil both directions. Just hope it's the pump and not the rack.

[A80Avant]

Probably pump, but check the belt is tight

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[Avantus]

yes tension on the belt is perfect. The pump has had it's periods of groaning and making a slight metallic knocking with your ear next to it on idle. Was better the last half year, but probably for the bin now

[A80Avant]

Don't throw it away. A shop here in the UK can rebuild it with guaranty

sent using Android

here is a link:

http://www.steering-racks.co.uk/

had a rack rebuilt and a pump checked, and Lloyd had his pump rebuild in record time.