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Hello all! WARNING! WALL OF TEXT INCOMING! Tldr at the bottom Backstory: I bought my 07 speed 3 as a project back in 2021. Previous owner gave me two torn down engines, a trans, and the rolling shell. My dad and I (who has alot of experience with this stuff, not speeds specifically) rebuilt...

Hello All! TLDR: I have a 2007 Speed 3 that I recently did a bunch of A/C work to. Its cooling but not as well as it should be and we (my Dad and I) suspect the drier may be in backwards. Does anyone know which way its supposed to go? I currently have the "drier In" side (with the long tube...

Hello! While troubleshooting a misfire, I ran a Fuel Pressure Relief valve test and it tested low. From my understanding, after shutting off the car at operating temp, the heat of the engine will heat the fuel in the rail and the pressure should rise to ~1800 PSI before the pressure relief...

*** Year/Make/Model: 2007 speed3 Mileage:~180k on chassis, ~10k on my garage built engine Location:SOCAL: moderate temp, no humidity, no altitude Concern: Car seems to surge at partial throttle. Probably a coincidence, but it seems to happen in fourth gear mostly DTC's: None Modifications: Built...

I live in the wonderful golden state of California, where I can't legally pass smog with a single emissions readiness monitor that doesn't pass. But I also have a speed 3 that I am stocking up on parts for a "big" turbo swap on (cst4). I would like to keep all the emissions equipment so that I...

Hello all, I have recently bought a second gen trans to stuff into my first Gen speed 3. I decided to do the fork pads and take a look at bearings/syncros while I had the trans out (looks pretty good from what I can tell). This video has been a great reference so far As I start to put it...

Hello! I am having occasional second gear pop outs on decel and consistent second gear grinds when the trans is cold. I already tried adjusting the shifter cable responsible for left/right movement (couldnt find info on adjusting front/back movement), so from what i hear most likely fork pads. I...

Hello! I bought a 2007 Mazdaspeed 3 with a blown engine as a project car a month or so ago and I figured I'd just go through the whole powertrain while its apart and have a fresh engine and trans. I am at the stage where I am starting to price out the trans rebuild, but can't seem to find parts...