First 3" SS custom downpipe ready !!

[Pisobiker]

...and the other side:

[Mark Halligan]

Marco, excellent work, you've had a busy day .

I wish that i could do that .

Cheers,

Mark.

[Pisobiker]

Thanks Mark

And all this whitout getting injured, this time !!

[Beetie]

Can we do a group purchase on these!!!!

[desmo888]

Damn Marco! Nice job!

I am interested in one as well. I will not need it for a few months so go spend a few minutes with the family.

Did you make a jig for the connections and such?

[The Spanish]

Thank you a lot Marco

[Pisobiker]

I can make some other ones, no problem, as long as I can manage to make one in 10-15 days. It actually takes a couple of days of work, but of course I cannot work on them full time.

I actually have flanges for other 6 downpipes. Then I'll need to have other 10 laser cut (10 each for the turbine outlet and WG duct) because the company will not work for less than that (well actually it will even for only one piece, but then costs would be way too high).

Rafael asked me about sport cat converters as well, so I'll make a search around italian manufacturers to see if it's possible to have a good deal without going through dealers. I bought my one from a local tuner so I don't think this route would be economically better then other solutions. If anyone already has a clue please let us know.



Marco

[Sweeper]

I can provide him with one. I actually have 2 :-]. One for sale.

[S2central.net]

Marco - This looks great... I am up for one at 220 Euros. I'm not in a massive rush because I want to discuss options with 70mm systems and sports CATs with you and the chaps...

I plan to do a before and after dyno run with the revised setup on the home brewed chips - that must get closer to ~300bhp on the standard turbo. Question is how close ?



Paul

[Pisobiker]

Paul,

the less restrictive higher flow exhaust system gives two main advantages for high rpm output:

1) reduces backpressure on the turbine outlet, thus increasing its efficiency and power delivery to drive cold side (turbine efficiency is proportional to difference in pressure between inlet and outlet of it);

2) reduced backpressure on turbine outlet makes turbine more permeable to exhaust flow therefore reducing backpressure on the exhaust valves as well. This acts in the direction of increasing scavenging thus volumetric efficiency, producing higher Hp at same boost level, or, alternatively, same Hp with lower boost.

With the use of a good flow exhaust system and sport metallic cat, you should be able to maximize turbocharger flow delivery, being able to run higher hp output at lower boost. Max hp will still be a matter of peak flow capability of turbocharger, thoug.
I think main advantage will be having the highest possible output with that turbocharger setup with the minimum termal loads in the exhaust side of the engine.


When I fitted my custom made 76mm exhaust system (about one and a half year ago), on my OEM RS2 setup (before chipping to ~360 hp), without any other modification, I measured ~20 hp at the wheels increase @ 7000 rpm.
I'm not saying the downpipe does it, but it certainly contributes to it.


If you want a 70mm one no problem, I'll put your ordr on the list (have only one left to do so far).



Marco

[Stick Insect]

It all falls into place now, wasn't there a film about an Italian plumber in New York...

Yes it's all coming back

Super Marco Brothers?

David

[The Spanish]

Sweeper,
can you post here some pics of the CAT and/or describe the specs.
PM me with prices.
Thank you,
Rafael.

[Pisobiker]

Originally posted by Stick Insect
It all falls into place now, wasn't there a film about an Italian plumber in New York...

Yes it's all coming back

Super Marco Brothers?

David

Yeah, I'm both of the brothers all in one

[Stick Insect]

Does that explain the waist line?

D.

[Pisobiker]

Originally posted by Stick Insect
Does that explain the waist line?

D.

I meant "one over the other" not "one biside the other" !!


Marco