AggregatVier

What's the '02 A4 1.8T Oxygen Sensor voltage? Most cars it's 1.0V but someone said '02's are 5.0.

Mat Indukts Lambos

Terminology will always be my enemy, so I can't name them properly, but I do know how they work(...somewhat). If you monitor it on vag-com, you'll see a value bouncing around zero. Basically, the ECU is always trying to see zero, and will feed the sensor accordingly to do so. The ECU then reads the amperage required, and bases any fueling adjustments on that.

This is also MUCH easier to explain with hands on, face to face instruction. It won't work with an air/fuel gauge, and is not a 5v wideband O2 that could be used for hi performance tuning.

AFAIK

®ob

One of their great ideas this system is better someway?
Sometimes they do stuff that makes no sense whatsoever

xr4tic

It seems like if manufacturers could gain 1 or 2 hp from something, they wouldn't bother, but if they can gain 0.0000001% better emissions, they're all over it

AggregatVier

OK, so is it still a variable resistance?

Mat Indukts Lambos

Try pulling off the brake booster vacuum source on a B5 1.8T (creating a vacuum leak), and then do the same thing on a B6 1.8T or 3.0L. It'll kill the B5, but the B6 will adapt & overcome. Just one of the things I saw/learned on, when they were coming out. ALso watched them via 5051 while doing that, to see how fast they adapted.

mrnitrous422

Just in case anyone was curious... =)