Wanting to gather a complete checklist now that the '07 Mazda3 is out of warranty...that's right, a Mazda thread that's NOT about the RX7/8 or Miata!


Car is an '07 Mazda3 iTouring 2.0 auto with tiptronic. Installing all stock Mazda parts from a 2.3 MazdaSpeed3 for the Turbo. This IS a DD/secondary family car as well...so not looking for insane boost at all, just something past the 148. 200-240 would be ideal.


So far I have the complete stock 2.3 intake manifold with backup 2.3 throttlebody, stock Mazdaspeed3 Turbo, and secondary ATX cooler. I've read a few writeups on the turbo addition, but very few as I guess it's not done very often. Every writeup seems to be completely different in what parts are needed or not (modding stock ECU is/isnt needed, ect). Anybody do this yet or have a decent checklist beforehand? This is my first turbo build, everything else has been Honda swaps...but I'm not in Hondaland anymore thank God.


I've also read mixed reviews on using a turbo with these auto engines, something about they can only handle up to 160whp? I've read that adding the secondary cooler takes care of this issue. Most 3 owners complain about how quickly their auto's get dirty fluid, I've never had that issue and changed it out 2x already.