07-05-2007, 10:10 AM
the temperature cools a lot from idling.. in my wrx (the EGT probe is a couple of inches from the #3 cyl).. when i am cruising on the highway it is around 1250F to 1400F.. drive around town for a bit it cools off to 850F and after i let it idle for a while it is down to 650F (like after 10min of idling)
and this is RIGHT by the block.. i bet the temperature at the end of the downpipe is much lower than that. i suspect your cat is after the flex, so it probably just cooled down to the point that it wasn't effective
you should try to arrange it so your car will be tested immediately when you get there.. you could also go back to stock to get the smog test done..
and this is RIGHT by the block.. i bet the temperature at the end of the downpipe is much lower than that. i suspect your cat is after the flex, so it probably just cooled down to the point that it wasn't effective
you should try to arrange it so your car will be tested immediately when you get there.. you could also go back to stock to get the smog test done..