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Hi all, I'm currently working on a website to document upgrades for the Mazdaspeed 3. https://www.mazdaspeedguide.com/ As a developer, this is passion project I wanted to build as I'm currently in the process of doing a major overhaul on my own Speed, after having a bone-stock car since new...

Hi folks, I'm strapping a JBR 3.5" to my new build and I'm considering going with a 51R battery to make my life easier. The batteries I'm looking at produce about 500CCA. Those of you who have done this mod, have you had any problems with cold starts? Has anyone ran this setup in colder...

Hi all, Reliability is paramount in my new build. I am contemplating three different turbo options: BNR S3 BNR S4 GT3076R (used, but same price as the aforementioned BNR kits) I am ignorant, but I figured the S4 would be a great fit since I can have it tuned for lower psi and only really have...

Hi all, I'm fairly new around here, but I've had my Speed3 for a while. As she's about to roll over 300k, I wanted to rebuild the car and bring it back to its prime - but I also want to improve things along the way. The car has been OEM, bone-stock, all of its life, so this will be a fresh...

Hi folks, Anyone heard of a factory performance exhaust option for Gen 1's? The only part number I got is: SU-S8ML26 I came across an ad of someone selling a used one, and here I am wondering what on earth it is. Does anyone know more about it? Thanks!

Hi folks, I have an issue with my current motor where I find my TIP leaking oil, and I also find oil in my intake. The engine does have a compression issue (200 / 145 / 145 / 200), so I'm wondering if this is just blow-by symptoms - if nothing else. My K04 has less than 15k miles on it and I...

THE CAR Color: Silver Mileage: 298,xxx Year: 2007 (Gen 1) CURRENT BUILD Chassis & Suspension: 100% OEM (Yes, even the RMM!) Brakes: 100% OEM Body & Lights: 100% OEM Engine & Cooling: 100% OEM (with 01-002/11 Service) Drivetrain: 100% OEM (currently on my second clutch) Wheels: Mazdaspeed 6...

Hi all, My name is Mike, and I'm a Speed-a-holic. I have an all stock '07 Speed3, who is currently on the edge of turning 300k miles young. I wanted to celebrate this occasion by rebuilding my car and decided to join this forum to share my experience with so many of you that have indirectly...

Are DTA axles still a suitable OEM replacement? I came across this post, with some users vouching for them: https://mazdaspeeds.org/index.php?threads/dta-axles-and-slide-hammer-tools.4623/ Here's an example listing: https://www.ebay.com/itm/272734818918 My Gen1 is making stock power, I just...