help

Hello all, I’m running into a huge problem on my speed 3. I’m having a cylinder 1 and 4 constant misfire. It will randomly stop and run fine then go back to misfiring. Recently it has not stopped misfiring. What I have done: Spark plugs replaced and gapped MAF replaced Set of fresh injectors...

Year/Make/Model: 2007 Mazdaspeed 3 Mileage: 186000 Location/Alitutude: Houston, TX Concern: Voltage spiking to 18v intermittently DTC's: P2503, P2504, U140 Modifications: CS cold intake, CS downpipe, accessport, HPFP ECU/Tuning Software: Cobb Accessport stage 1+ Tuner: Is the concern...

Hey guys, currently dealing with a “module configuration error” RCM code after attempting a gen2 to gen1 seat swap. I messed around with forscan not knowing what I was doing to try and clear it a while back (like a moron) and managed to disable the passenger weight detection in the non As-Built...

Hi everyone, I just got myself a MS3 and have been doing some work on it to see what large maintenance items I need to complete. In this process and taking the valve cover off, I seemed to have pulled a wire out of a connector. The wire in question is yellow and for the fuel pressure sensor. The...

Hello everyone! I have a 2005 Mazda 3 2.0L M/T project car that I'm working on. There is this plug that goes into the bottom of the fuse box that is disconnected on my car. I can't find what it is supposed to plug into. I have provided pictures of the plug in question. Does anyone have this...

Hey everyone! I got home from work this evening and noticed some vapor coming from under the hood. Popped the hood and sure enough, the smell of coolant hit me immediately. The leak seems to be on the left side of the bay and is getting onto the serpentine belt, which is then flinging it...

What's up everyone? My name is TYCO. I bought my MS6 in March because I knew I wanted an all wheel drive 6 speed. I did not know I was going to be buying one of the rarest cars I have ever owned, Google says around 5,000 were made. With that being said, I am VERY GRATEFUL for all of the forums...

Ok so I really need some help fast with a timing issue. I blew the head gasket and am getting ready to take off all the timing components and figured I would check it before hand. What I found was at top dead center the 2 cam lobes on the HPFP side are at a perfect 45 and everything I'm seeing...

Hey guys hope everyones mazdaspeeds are not breaking ever week like mine is. anyway I've found that my speed has lost a lot of power. normally around 3000-3500 rpm the car pulls really well and honestly is amazing. i found about 3 days ago the car doesnt hit any sort of power anymore around that...

Hi, im new here. not finding much help on the internet, its like 100 degrees out, which means i havent crawled under it yet.... so i figured it was time to sign up. I have a 2007 mazdaspeed3. 110k miles. Anyway, i was driving earlier, in town, casual. light turns green, i push the clutch, it...

About 2 weeks ago I bought a 2008 Mazda speed 3 with 184xxxkms. Test drove it and all went well. On the drive home the bov came out of the hose, tightened back up and it has been misfiring in hard boost ever sense. The car has mishimotto front mount Cts4 turbo Hpfp internals Exhaust 3.5 intake...

I am installing a new Cobb SF intake on my car and I don't have the correct connector because my car came with the metal mazdaspeed intake (GRMS-8M-L29) and I don't have the correct elbow for the intake vent tube all I need is a part number so I can install the intake and have it work correctly...

Hello! I have been searching for advice on how to fix this all over the internet, and to no avail. Any information or things to test is greatly appreciated. I recently had a shop do an engine swap into my speed3 and now I am getting some error codes and KR. I have included a data log for...

I am burning about 1 qt/1000 mi or more and I'm at a loss at to what to do next. It's definitely coming out of the exhaust, it will smoke during the idle test and the tips get black shortly after cleaning them. There are no leaks, I park in the same spot everyday and never see any drops. I have...

[2012 Mazdaspeed 3, 140,000 miles, Bone Stock including the tune, Bought brand new, single owner, drive like a grandma with weekend Italian tune up] So today my dumbass decided to finally check my oil level after a couple thousand miles, even though I know these cars very well and that they...

New to the Mazdaspeed 3 Space and as usual with buying cars you think are gonna be awesome their are always flaws. MODS: Cork sport HPFP, HPS CAI, EBAY TURBO INLET, Dual port BOV EBAY, JBR Poly mounts all around, Cork sport OCC. CONDITION: 6,000 miles on long block, 6,000 miles on turbo...

Year/Make/Model: 2011 Mazdaspeed 3 Mileage: 106700 Location: Wheaton, MD Concern: Underboosting after exhaust leak repair DTC's: N/A Modifications: forge bpv, aftermarket turbo inlet (just inlet, not intake), unknown muffler ECU/Tuning Software: N/A, though I don't know if previous owner...

Hi all, new here. I have a 2007 speed3 with about 127k miles. After about 30mins of running or when car is warm, the car idles weird in neutral with clutch off ONLY. The rpm in idle bounces up and down, but doesn't happen when clutched in. On my Cobb AP, I have an CEL P0850 - Park/Neutral...

Ok so I’m having a p0300 code on my 2008 Mazda 3 -after market exhaust, air intake, and tuning -rough idle and cold start -replaced cover head gasket, spark plugs, 1st fuel injector, MAF Sensor -At first it was a misfire for cylinder 2 then while working on the injectors (I swapped them...

I have a 2006 mazdaspeed6 BONE STOCK. Around 3500 to 4000 rpm the car hesitates and stalls almost as if the car is literally turning on and off. This hesitation and stalling however only happens when I floor it. I have also notice that when I drive with no air filter, the car does not hesitate...