UrS4 2.2T Avant project

[prj]

Great plan - good luck to you!
I have a similar situation, S6 saloon, GTX35R and motronic ...
see what happens :-)

Except you already have big MAF and 440 hp on dyno with GT3071R/K26, and still not happy

http://prj-tuning.com/?p=54

A question about the fuel pressure thingy... Whitch would be better to use if your injectors is big enough, 3bar or 4bar pressure? At 3bar the fuelpump has more flow, at 2bar boost it need to pump 5bar vs. 6bar at 4bar fuel pressure...

Makes almost no difference, because the amount of fuel you will be using will be the same.
It would only be an issue if your injectors were not big enough with 3 bar, but would be big enough with 4 bar.
If you are not using 100% injector with either setup, then do whatever you want.

[Thuppu]

Ok, thanks. Would be safer to use the injectors at 4bar/1000cc.


Some practicing with my tig welder. It's so nice and peacefull to weld with the tig compared to mig with all sparks flying alround.

[europeanme]

A question about the fuel pressure thingy...

technical term Thomas?!?!...

I must say I'm not sure about that fuel rail....:mischeif:

looking good matey....

[prj]

If you have 1000cc injectors, then use 3 bar for better idling capability.
Although EV14 probably will idle fine at 4 bar as well, but at this size injector sizing does start to matter.

Those injectors in the picture look like EV1's to me though.
Are those just a test fit, or are you going to be using EV1's?

If so, DEFINITELY 3 bar fuel pressure, they'll be all over the place.

[Thuppu]

technical term Thomas?!?!...

I must say I'm not sure about that fuel rail....:mischeif:

Yeah, you know my english...

Haha, you are just jealous of my motorsport rail.

looking good matey....

Thanks!

If you have 1000cc injectors, then use 3 bar for better idling capability.
Although EV14 probably will idle fine at 4 bar as well, but at this size injector sizing does start to matter.

Those injectors in the picture look like EV1's to me though.
Are those just a test fit, or are you going to be using EV1's?

If so, DEFINITELY 3 bar fuel pressure, they'll be all over the place.

Noo, those in the pic are my "old" 440cc(3bar) greentop's, have been used at 4bar though. Those are soon fore sale if someone is interested, almost new, used for 6000-7000km. They are NLA nowadays. Good injectors though.

My EV14's waiting for the map day.

[europeanme]

Yeah, you know my english...

Haha, you are just jealous of my motorsport rail.

Thanks!


Noo, those in the pic are my "old" 440cc(3bar) greentop's, have been used at 4bar though. Those are soon fore sale if someone is interested, almost new, used for 6000-7000km. They are NLA nowadays. Good injectors though.

My EV14's waiting for the map day.

lovely motorsport rail....

are you not using adaptors with your ev14's?....

[quattro84]

Nice welds, are these done with that Ebay TIG unit?

[Thuppu]

are you not using adaptors with your ev14's?....

Yes I need to use them.

Nice welds, are these done with that Ebay TIG unit?

Yes they are. I'm sooo waiting to get my hands on the DP- and exhaust build.

[europeanme]

Yes I need to use them.

are you using the fiveo motorsport ones or the finjector versions?....

[Thuppu]

I will use those in the pic, Fiveo ones. Don't see any reason why these would not be good. I remember the thread of the adapters but if the o-ring goes deep enough there should not be issues. There are also no edge on this rail you can lock the clips to.

[Wrath]

Ebay tig weld unit? sounded cheap?

[Thuppu]

You heard right.

Chinese AC/DC puls tig/plasma cutter from ebay.co.uk. 580 euros shipped. Link!

[Wrath]

my god, 5000 SEK for a tig welder that works :O hmm time to buy and learn how to tig

[Thuppu]

my god, 5000 SEK for a tig welder that works :O

Haha, if you are lucky. First what I did, was opening it and tighten the big power leads. All was loos, and one nut had dropped to the bottom of the "chassis". But it seems to work fine... for now.

[quattro84]

Bit of OT, but:
- Did you try the plasmacutter yet?
- Does it use compressed air line as input (don't think it has an internal one)?
- Do you have to make an arc on your product to start it?
- How about the torch & hose package quality?
- Does it use DIN/ISO connectors so you can swap it for a 'decent' one in case it fails?

I'm still in doubt about buying a chinese clone, but damn, this is like 1/12th the price of a A-class AC/DC TIG + Plasma cutter... Too bad it isn't watercooled