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  1. M

    NEED HELP: Dealer said I need new wiring harness's and PCM $3500

    Perhaps you do not realize that you are in the Mazdaspeed subforum. Our cars are much different. There might not be anyone here familiar with wiring harness and ECU issues on your non-turbo engine. We have a 2.3L direct injection turbocharged engine with a completely different harness and...
  2. M

    looking for used speed 3

    PM me. I can share my experience, which has been positive. I bought my '08 new in this Spring of that year. I have 111,000 miles on the car with mods in my signature below. It has been my daily driver and has needed only routine maintenance. I did just recently have the turbo rebuilt, which...
  3. M

    Hypertech Max Energy Sport CAI Update Now Available!

    You have selected the wrong intake choice, it would seem. If Corksport is a choice, select it as I doubt it is a CAI. Selecting the proper intake is critical, as this determines the MAF sensor calibration. Everything else in the tune depends on that calibration. Your tune is also load based...
  4. M

    Design's Long Term Ownership/Build Thread

    I'm at 111,000 miles (mods in sig) and continue to follow your journal. It is very helpful and mostly mirrors my own experiences. Thank you. Check cylinder compression. My guess is that it is still fine and that you are right about the PCV. Absolutely clean the intake valves when you have...
  5. M

    New Member's 2007 MS3 Experience

    Please tell me that the car has upgraded fuel pump internals. That is a necessary prerequisite to running an aftermarket downpipe. Without it you are likely to lean out under load with bad outcome for your engine. Are you monitoring fuel rail pressure under load? Can you datalog? What does...
  6. M

    Hypertech 62003 WTS but Panjo no work

    I'm still enjoying the 'Speed 3, but may go normally aspirated rear wheel drive next... Taking a hard look (forgive me boost buddies) at, gasp, Chevrolet SS. Rebadged Australian Holden Commodore with 415 horsepower or so LS3 engine. 12.9 quarters at 110. .97 G on the skid pad. Brembos...
  7. M

    Help!!

    It could be anything. Chasing noises we cannot hear by remote Internet advice is not very productive. Where is the sound coming from? Don't say "the front," or "the engine bay" or such. Be specific. Try to pin it down. Does it change with rpm or stop at idle? Can you monitor fuel pressure...
  8. M

    Harsh Ride

    Yes, the B6s are firm. Bone rattling, teeth jarring firm. But, your car will not squat or lean. If your old shocks were shot, you could no longer feel how firm they were when new. However, those Bilsteins are much stiffer than even new OEM shocks. Much more. Because of the extreme control...
  9. M

    Hypertech 62003 WTS but Panjo no work

    What are you replacing the Speed with? I may be letting mine go, too, later in the year. She's strong and has served me well for 7 years and 110,000 miles, but getting a little long in the tooth and no new Speed3 on the horizon.
  10. M

    Adding nitrous to existing water/meth setup??

    What you seek will be found at the maxdaspeedforums (dot org) board.
  11. M

    Suspension knocking in front

    It is actually easy to change the bushings. Can be done in 30-45 minutes max. It is a tight fit up in there, but you do not have to remove the sway bar or even loosen the end links. There is a cross member that you remove for access. You can do this with the car on jackstands, on your back...
  12. M

    What's your favorite tire?

    On a 160 mph turbocharged Mazdaspeed 3 that needs Z rated 40 or 45 aspect ratio tires?
  13. M

    What's your favorite tire?

    Yokohama Advan Neova AD-08R. Perhaps the closest street tire to R compound track tires, yet still got about 30k miles on the first set of AD-08s. TheAD-08Rs are supposed to last at least as long and have improved wet grip. These are some really sticky tires with "right now" turn in. They are...
  14. M

    Electronic boost controller installation

    Go over to Mazdaspeed Forums and post a data log from a third or fourth gear WOT pull from 3k to redline, including your boost cut or fuel cut incidences, and ask for help. Your problem is from the crappy OTS stage 2 tunes. Those tunes contemplate a catted DP and are too aggressive for you...
  15. M

    Electronic boost controller installation

    Are you tuning with AP? If so, the solution is in your tuning tables, not with an add on controller. I do not recommend using a manual or electronic aftermarket controller with this engine. If you are overboosting fix it correctly.
  16. M

    Electronic boost controller installation

    The Mazdaspeed 2.3L turbo engine with direct fuel injection and purposeful use of cylinder cooling to prevent knock has a very advanced and sophisticated electronic engine management system. Add to the mix the efficient but reatively small K04 turbo with a very small and heat vulnerable 5mm...
  17. M

    Stage 2 bog/sputter

    Lots of possibilities. We can only assume the dp install went well and that no damage was done to the primary 02 sensor. A damaged sensor could explain a lot of things. We'll assume for now that it is ok. For starters, go back to a known stage one tune that worked for your other mods and see...
  18. M

    clutch pedal shakes when slightly pressed

    Brace yourself. A shaking clutch pedal is the hallmark of a bent connecting rod. That why an inquiry about present and former mods is appropriate. A worn motor mount usually makes the whole car shake, rather than the clutch pedal only. There are other possible problems of lesser danger, but...
  19. M

    Suspension knocking in front

    If your question is addressed to me, the answer is yes. It is very foolhardy not to replace the bearings, both halves on both sides. I tried without it and ended up having to redo the job. The top pieces may have worked fine with your old, worn out struts, but are highly likely to make a lot...
  20. M

    Suspension knocking in front

    Yes. Sway bar bushings. I had same problem,. I had already replaced struts and shocks, which were due for change anyway, so I knew it was not from that install. I replaced the end links, but that did nothing. It turned out to be the front sway bar bushings. They are cheap. I got the...
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