Mazdaspeed3 High Flow Cat Downpipe + KO4 Turbo Replacement 

Best RU-vid tutorial available thank you so much for this

That heatshield on the the freaking alternator is a pain in the ass! Good job guys!

I was not expecting this to be a video based off Burnaby BC. I just recently purchased a Speed 3 as well which needs some minor work here and there. Another trick I got told if you wanted to prime the system before starting it, is to push the throttle and clutch down completely and crank it. The ECU will recognize that, and just cause the motor to crank but not start. I do this temporarily to prime my chain from rattling on cold start, until the weather gets warmer to replace the chains and VVT acutator.

Lol great video... as we also made the same 2hr job into much longer. We were on the home stretch and noticed while plugging on the boost controller vacuum hoses... hey what did they say in that video to be careful about breaking expensive brittle part. Yep we broke it. A little MacGyver action drilled the end and popped in a T fitting and capped the extra end and wrapped it up with 3m electrical tape. Seems to run fine although only maxing out at 14.xx psi now with 21 max psi base tune. Previous old bad seals turbo was hitting 19.xx max psi. Anyone know anything specific? Should I just get the Cobb controller now? Thanks!

Thank you for this

That impact gun on thr O2 semsors turnsmy hair grey

What type of aftermarket down pipe is that

Was your high flow downpipe has the cat to pass smog ? If so where did you get it i need one for my 07 mazdspeed 3

The axle on the compression wheel must not have play, it must not move by hand, it will start consuming oil again one day. I know from experience.

where did you get lifts? jack stands? :/ I'm prepping to do some installing and those would make a world of difference

Any code for remove first cat?thanks

Well did it stop smoking? Didn’t mention