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Year/Make/Model: 2009 Mazdaspeed3 Mileage: 166,450 Location: Arroyo Grande, California Concern: battery started draining within a few days out of the blue DTC's: None Modifications: BNRS4, Autotech HPFP, HTP 3.5” intake, ETS TMIC, GFB t9002 hybrid BOV, turboxs DP + RP, Cobb CBE, Damond TMM +...

Ever since I got this turbo (BNRS4) from a buddy and installed it, I've been getting boost creep all the way to 22 psi on spring pressure. The internal wastegate is opening, but not enough to vent the boost built. By swapping out a new one, I've already verified that the wastegate actuator isn't...

Hey all. I recently picked up this bnr s4 unit online from a guy. Upon arrival, I noticed that there were scratches in the intake side around the intake turbine. At first, I freaked out thinking I got snowed. There was also a little side to side shaft play, nothing too serious but with nothing...

Hello all, I am looking for opinions or facts on which oil catch can setup is best for running a BNR S4 or similar sized aftermarket turbo. I’ll be using a HTP 3.5” intake which does have a port for pcv. I am already running a Damond Motorsports Stage 1 kit with VTA, and planning on getting a...

I have a Gen 1 speed3, it runs great. I noticed though that my AFR today was 14.26-14.41 on cruising. I thought it was closer to 14.7 before… mods: 3” turbo xs catless downpipe and testpipe 3” custom aluminum modified mazdaspeed brand intake Autotech high pressure fuel internals. Damond...

Just installed my turboxs catless downpipe and racepipe on my 09 gen 1 speed3. It sounds awesome. However, roughly 30 miles after the install, 3 miles into the third drive after the install (which I didn’t let it sit and warm up because I had to get somewhere), it threw a CEL with a P0421 code...

I am trying to fit a Corksport Aluminum TIP in my 2009 speed3 with a Mazdaspeed brand 3” aluminum intake, which was previously modified before I got it used. The intake is a tight fit, but does fit in there. I am having some fitment issues with the hard plastic breather hose that goes from the...

I recently got a set of kicker CSS68 and CSC68 speakers to replace my crappy Bose door speakers in my 09 Mazdaspeed3 GT, plus some Pioneer TS-G520s for under the front seats. Along with those, I picked up a Kicker 46HS10 Hideaway Subwoofer with a 180-watt amp built in for the trunk. It comes...

I have a turboxs downpipe and testpipe I plan to install soon, but want to avoid any leaks. For those wondering, yes I have upgraded HPFP internals. My car (2009 gen 1) has 155k miles on it, with I believe the original downpipe gasket and exhaust gaskets. When I bought the DP, the guy threw in...

I'm in the market for a catless downpipe for my 2009 MS3. Ideally, one with reduced bungs that didn't throw a CEL would be great. I have one guy who will sell me a used TurboXS downpipe for $170. The other option is an eBay downpipe, new for $110ish shipped to my door. What is the move? I hear...

Hello, My speed3 is running low on boost (13.57 psi is the most I can get from it if I’m pushing it hard, and this is in 5th) but seemingly not leaking boost when I tested leaks from the turbo back. I can only make 8psi in a 3rd gear wot test. I’m running the Mazda CX-7 turbo (K0422-582) that...

I’m considering upgrading my stock turbo/exhaust manifold and getting something a little more performance. I have seen turbo manifolds on eBay for relatively cheap. They look better than stock, but do they hold up? I attached a photo of it. Here’s the link to one I was looking at...

Hi all! Today I threw a stage 1 cobb ots map on my 2009 Speed3. I first noticed that it felt way faster when pulling (Yay!), but soon after I saw that I was only making low 13's psi boost. I also saw that my AFR was different on WOT, staying around 11.76. There was a bit of Knock retard in one...