Anyone happen to know some approximate temps for the exhaust feeding the EGR?

My setup requires the EGR temp switch, but I can't use the EGR valve that has the fitting for it.

I'm using the Corvette external EGR feed pipe, which happens to allow for the EGR switch to thread in there. It's about 8-12" from the exhaust runner (headers) and I'm trying to figure out if this is going to work or not.

I just got done testing the temp switch, I couldn't get water hot enough to trigger the switch, so it's looking for something over 200*.

My thinking is that with the EGR valve closed, exhuast gas won't enter the feed, at least not in enough quantity to trigger the switch...but when the EGR valve opens, I'm hoping that will allow enough hot air past that the switch will work as intended. The feed tubes are thin wall, and have an asbestos(-like?) gasket between them, so I doubt there will be much heat transfer from the tubing.

Stock, the switch is placed on the intake side of the valve, where mine is now on the exhaust side of course. Obviousl the temp will probably be even higher where I'm measuring it, just wondering if anyone else thinks the valve being closed will keep the heat from affecting the switch.

Can't find the switches operating temp in the manual either.

Just curious if anyone has any thoughts on this.