S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

has it ever been confirmed or debunked that the stock grey injectors flow more than the pinks?

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Old 10-25-2006, 02:34 PM
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Default has it ever been confirmed or debunked that the stock grey injectors flow more than the pinks?

I have always been told that they do. Also has any one ever verified the flow ratings at 3 or 4 bar? I have had people say everything from 346cc to 390cc.

We base alot of our home brew tuning of this possibly wrong info that exists in this very forums archives. it would be nice to know its truely accurate.

I think about this because technicaly if you increased your maf and injector size 45% and changed nothing else you should see the same AFRs as before. That 45% is being calculated off the stock sizes. we all know the stock maf tapers, so thats going to be hard to lock down. but this injector thijng bugs me.
Old 10-25-2006, 03:40 PM
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Default Check with APR on which color injectors they used when they flow tested.

<ul><li><a href="https://forums.audiworld.com/s4/msgs/924243.phtml">Click</a></li></ul>
Old 10-25-2006, 06:46 PM
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Default Lol, that thread is a flashback to "not any better days" hahahaah. Anyhoo, betting the APR

tested injectors are the grey/early ones as their B5S4 was an early A box. Not exactly sure when the newer/revised ones(orange) came out but I'm betting it was with the mani change and other updates on the 09/00-10/00 M cars. Mine is a 03/01 M and it had the orange injectors. Its running the lame/slow 400chp max RS4 injectors now.
Old 10-25-2006, 07:05 PM
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Default

Piggie flowed some (not sure what color) at ~350cc/min@4bar and ~390cc/min@5bar IIRC.
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