Solved! Ok just an update for anyone who may come after me...
I ended up doing a compression test and everything was between 160-170. Would be nice if it were higher but oh well. Anyway after confirming this I tore apart the intake for the second time and replaced the #1 cylinder injector...
Update:
I replaced seals with CS seals and new upper seals/o rings as well as new intake manifold/TB gaskets.
The car seems to be running much better than before, I gave it some spirited driving and it pulled very nicely in all gears. I drove for about 35 mins (mix of street and hwy) and...
Thank you both for the info. If I do a compression or leak down test first, would a (potentially) faulty injector seal throw off the accuracy of the tests? I know theres a compression problem with that cylinder, but I was not sure that the compression or leak down test would tell me if it was...
Hello everyone this is kind of an introductory post and also a cry for help. Im the new owner of a kind of rescued 2008 Mazdaspeed 3. I really need some help because this thing needs just a little love to get back on the road. I need to get it smogged asap (DMV giving me 30 days smog exemption)...