does anyone know the following?

what is the cc of std vRS injectors?

what is the cc are TT225 injectors?

1.8T 150HP AGU

06A906031

0 280 150 464

289ccm@3bar

334ccm@4bar

1.8T 150,180HP

06A906031BA

0 280 156 061

321ccm@3bar

371ccm@4bar

1.8T 210,225HP

06A906031BC

0 280 155 892

395ccm@3bar

456ccm@4bar

Audi RS2 316HP

034906031F

0 280 150 984

386ccm@3bar

446ccm@4bar

Audi S6 230HP

034906031B

0 280 150 951

301ccm@3bar

348ccm@4bar

Also here there is a lot of info:

http://clam.rutgers.edu/~dreadsct/resell/1.8T_injectors.htm

thanks that perfect!

anyone know where to get tt 225 injectors cheap?

From under the bonnet of a 225TT while the owner isn't looking?

From under the bonnet of a 225TT while the owner isn't looking?

Indeed.

Tools required - screwdriver, 5mm allen key, crowbar or rock (optional)

Time required - 3 minutes (may be longer if crowbar used)

Procedure:

If bonnet closed, try driver's door. If unlocked, open and pop bonnet. If locked, lob rock through window first

Open bonnet, prop open.

Remove engine cover (4 plastic turnbuttons)

Remove two allen screws holding down fuel rail.

If feeling prissy, disconnect 3 multiplugs connecting injector wiring to engine.

Disconnect connectors from injectors.

Lift out fuel rail complete with injectors.

Remove injectors from fuel rail by detaching spring clips and pulling.

Make a sharp exit, stage left...

Indeed.

Tools required - screwdriver' date=' 5mm allen key, crowbar or rock (optional)

Time required - 3 minutes (may be longer if crowbar used)

Procedure:

If bonnet closed, try driver's door. If unlocked, open and pop bonnet. If locked, lob rock through window first

Open bonnet, prop open.

Remove engine cover (4 plastic turnbuttons)

Remove two allen screws holding down fuel rail.

If feeling prissy, disconnect 3 multiplugs connecting injector wiring to engine.

Disconnect connectors from injectors.

Lift out fuel rail complete with injectors.

Remove injectors from fuel rail by detaching spring clips and pulling.

Make a sharp exit, stage left...[/quote']

i know how to remove the injectors.. might just go the whole hog and get cossie green ones...

but will they fit?

Get greys

Or some Bosch 150351.

560 @2.7 bar through to 680 @4 bar.

they are std bosch injectors... so green or grey will fit...

im just unsure as to how well the ecu will cope with the change? assume combo of lambda and knock sensors should compensate for extra flow?

Listening attentively - go on, chaps ....

Listening attentively - go on, chaps ....

only asking cos im curious?

cheers for the pm jon.....

Paul you have a PM

Lets see if I can remember this right:

Fuel flow requirement:

bhp x 5.6 (its a turbo)

----------------------

4 (no of cylinders)

so thats (350 x 5.6)/4 => 1960/4 = 490cc

Assume you don't want to run more than 80% of the max flow of the injectors, so;

(490x100)/(1x80) => 4900/80 = 612.5cc

Hmm, look, my original injector suggestion looks about right

Oh and don't forget your fuel pump. Not sure what the flow capacity on the standard one is, I'm sure someone will.

To calc capacity required:

HP x 7.3 (it's a turbo, if N/A multiplier is 6)

Lets say 350 hp, so need to flow 2.555 litres per minute

increase figure by 10-15% if running 3 bar FPR

increase figure by 10-15% if going from 3 to 4 bar.

Enjoy!

only asking cos im curious?

cheers for the pm jon.....

Only listening cos I'm thinking of something similar after all the problems I've had with my injectors. I did hear from another poster that he had tried larger capacity injectors and removed them because they didn't give the required results ...

If you want to revise your FPR, you can do that and it'll give different figures for the injectors:

Revised flow of injectors = static flow (thats the one above ie 612) x square root of revised pressure/original pressure eg going from 3 bar to 4

RF = 612.5 x square root (4/3) => 612.5 x 1.154 = 706.8cc

Fuel flow requirement:

bhp x 5.6 (its a turbo)

----------------------

4 (no of cylinders)

so thats (400 x 5.6)/4 => 2240/4 = 560cc

Assume you don't want to run more than 80% of the max flow of the injectors, so;

(560x100)/(1x80) => 56000/80 = 700cc

Hmm, look, your original injector suggestion looks abit gay :gay:

700cc injectors.. or go for a RS 500 coswoth style 8 injector setup?

Paul you have a PM

Lets see if I can remember this right:

Fuel flow requirement:

bhp x 5.6 (its a turbo)

----------------------

4 (no of cylinders)

so thats (350 x 5.6)/4 => 1960/4 = 490cc

Assume you don't want to run more than 80% of the max flow of the injectors' date=' so;

(490x100)/(1x80) => 4900/80 = 612.5cc

Hmm, look, my original injector suggestion looks about right

Oh and don't forget your fuel pump. Not sure what the flow capacity on the standard one is, I'm sure someone will.

To calc capacity required:

HP x 7.3 (it's a turbo, if N/A multiplier is 6)

Lets say 350 hp, so need to flow 2.555 litres per minute

increase figure by 10-15% if running 3 bar FPR

increase figure by 10-15% if going from 3 to 4 bar.

Enjoy![/quote']

So in one formula it's 5.6 and then suddenly it's 7.3 - is that the 80% coming into effect?

Surely the standard FPR is 3 bar anyway?

Surely the standard FPR is 3 bar anyway?

yes its 3bar as standard... and a common mod is to swap for a 4bar... so does this mean the ecu can cope with an injector swap? as the flow rate would be altered by this?

Me has wondered this too Should ask Jabba I suppose ... I know SkodiRS was thinking about this too .... Adrian ???

its all hypothetical of course......

Nick, the first is for injector sizing, the second is for fuel pump sizing.

For injectors there are 2 multipliers, 5.6 for turbos, can't remember for n/a

For fuel pumps, again there are 2 multipliers; 6 for n/a and 7.3 for turbo engines

Standard FPR is indeed 3, but with software it can be taken to 4. Above 4 you need to change the FPR itself. You shouldn't run more than a 5 bar (although you can get them) as it doesn't give as good controll of fuel flow through the injectors, the lower pressure ones give better granularity of flow control.

Paul, the ones I suggested on a 4 bar FPr will flow 682 at 4 bar, close enough me thinks :P

Me has wondered this too Should ask Jabba I suppose ... I know SkodiRS was thinking about this too .... Adrian ???

I seem to remember Adrian had concerns that the standard pump was not coping even with a "normal" remap.

Nick, the first is for injector sizing, the second is for fuel pump sizing.

D'oh! Sorry

I seem to remember Adrian had concerns that the standard pump was not coping even with a "normal" remap.

an RS4 fuel pump may be the answer... i got detonation on a low tank the other night.. kept full since and no detting....

Yup, and IIRC a RS4 fuel pump fits straight in

Yup, and IIRC a RS4 fuel pump fits straight in

so where is the pump?