I was curious if anybody knew if stock 3b injectors were low, or high impedance? And if anybody knew as well what b5 s4 injectors were?

Yup. That is all.

They are both high impedance. Don't know? Just test them with a DMM http://www.fuelinjectorclinic.com/injec ... faq.html#3

Okay. Thanks boss. That answered my question. Second question. Any clue what the rate of stock 3b injectors are, and stock b5 s4 injectors? Like Lb/hr??
EDIT: Think I might have found it. Looks like at 3 bar they're both real close in flow rates. somethin like 215 cc/min

I own both of them an can check impedance however I believe yoda is correct and they are both high impedance. Also, the S4 is a 4bar system where the 3B is 3 bar.

That's what I was finding. the s4 injectors look to be something like 320 cc/min at 4 bar. Pretty much the same as the 3b injectors when at 3 bar. Not really an upgrade of any sort. I've got a buddy with a b5 and he just went full stage 3. Was hoping to take some old parts off him as a cheap upgrade to hold me off till big injectors.
Oh well.

3B injectors are 304cc 29 lb @ 3bar

Well then. google lied.

pn# is 0280150737 for more google'n

I often wonder how and where you get your knowledge sir. It is vast and infinite.

Teh interwebz you just gotta search around it, bookmarking helps too.

Stock B5 S4 injectors are 33lbs/hr @ 4bar. In a 3B (@3 bar) they would become 28.58 lbs/hr or 300.36 cc/min which means they are almost identical injectors (flow anyway).