If I were to buy a test pipe for my 04. Have it installed and the o2 sensor threaded back into it. Could I go ahead and have the shop drill a hole for the egt probe and a/f ratio probe before it gets installed? right behind the stock o2 sensor or are there better spots for these to go?

thanks

 

put the egt on the header where all 4 tubes collect at the bottom
my a/f probe is located in my downpipe. make sure its mounted either at 10 oclock or 2 oclock. from what ive hurd

 

Not sure how it is on the Lancers, but on my turbo manifold for my Civic I tapped the #3 cyl exhaust runner 3" from the head. Supposedly the #3 cyl runs the hottest, so that's the recommended one to tap. Yes, the probes can with stand the extreme temps; so you find out which cyl tends to run the hottest, tap that runner about 3"-4" from the head to get the most accurate reading.

BTW, are you going turbo? Cuz you won't be it if not!

The A/R can be about anywhere from 1 to 2 feet down the pipe, whether a turbo DP or N/A header DP.

 

just make sure you put it 3-4 inches aways from the header. closer the better though

 

I plan to go turbo. I just recently bought the whole Zeitronix kit. I was going to install everything but boost. I want to be able to install it once and not have to again later on in the building process