Join Date: Sep 2015
Location: Lindsay, Ontario
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My mileage was still relatively normal, I did not get a drop in MPG. I want to stress that I changed my precats (they were the real issue on my car) just as the breakdown process was starting inside them.
The main symptom for my car was horrible rotten egg smells any time I really revved it up for more than a few minutes. The smell would linger for 10-15 minutes in the car before it dissipated.
I also want to add that the 06 has a revised exhaust routing so the same hand grenade issue that happens on the 03-05 is not present on the 06, but clogged cats are never good. Nearly any shop should have a pressure gauge to test the backpressure, that would be my first step if I were you.
The only issue I have with the Torque app is that it is using the generic definitions for the OBD II readings and codes. It is still good information and it is still very useful in helping troubleshoot your car. Many of the tests required to properly troubleshoot cars require a two way scan tool which can perform various tests and cycle solenoids and so forth. No generic OBD II tool can do that.
2004 Mazda 6s 3.0 5dr. 5spd never ending money vacuum project:
CP-E headers w/catted mid + Magnaflow carback/AEM CAI/3.7L TB/Speed6 springs/RX-8 wheels
AWR 70D Enginemount/CP-E Dogbone/Custom urethane stock trans mount
Ralco shortshifter/Bose w/Auxmod/sharkfin antenna/lots of little things...
Last edited by b1lk1; 08-06-2017 at 09:56 AM.