I finally got my split air pipe hooked up a month or so ago, but since my ECU thinks the split air solenoid is fubar, I just made it so it constantly pushes air into the cat.

Does anyone know whether this is bad for the cat or not?

 

Still curious... don't want to burn up my cats if it's bad.

 

That's exactly what's going tohappen.
The additonal air injection causes the temps to get hotter.
This is why the ECU switches it off after 2500RPM(?).


-Ted

 

Ah... good thing I have an spare ACV...

 

I did the same thing....... Now my catalytic converter is R.I.P. After a couple weeks of high RPM driving, I noticed that familiar rotten egg smell. Took it off, rattle rattle.... Yours might last longer, because I think my cats were already dying... but, still.. a great way to hollow your cats out.

 

[QUOTE=Valkyrie]I finally got my split air pipe hooked up a month or so ago, but since my ECU thinks the split air solenoid is fubar, I just made it so it constantly pushes air into the cat

The Split Air Solenoid only opens when your in fifth gear. See your local FSM for the car. Fuel Section.

 

I have an S5 split air solenoid if you want to buy it.

 

I've got a spare already...

But I kind of doubt mine is really bad since it holds a current and the resistances seemed normal (that is how the ECU detects problems anyway). Didn't check it with a battery to see if it actuates though...

If you've got a working S5 dashpot (throttle damper thingy) for sale, I'd love to buy it, though...

 

If you've got a working S5 dashpot (throttle damper thingy) for sale, I'd love to buy it, though...

I'll give you one of those, hows 5 bucks.

I did the same thing with a gslse I previously had. I could be mistaken, but I think even when the split air soleniod is sending air to the cat its still metering it in some what. I had the airpump directly connected to the cats on a gslse and they where glowing red hot at idle. When the car was on the dyno for a smog check it lit a peice of carpet under the car on fire.