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    Black smoke/ping sound on hard acceleration

    Sorry to revive an older thread but today I had the check engine light come on. I haven't had major issues with smoking or the pinging as of late but I'm not convinced that it's solved either. I went to Autozone to have them pull the code and they came up with P0401; Blocked or Faulty EGR valve...
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    Black smoke/ping sound on hard acceleration

    Thank you all for the quick responses. I'll try the 93 octane and see what happens. The problem I run into around my area is that there are very few places that sell this grade of fuel. Most are 91 at the most. I'll let you all know how it turns out though and if there are any other suggestions...
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    Black smoke/ping sound on hard acceleration

    CAI has been on the car since about 500 miles were on the odometer. I can get the ping/sputter to happen whether the car is cold (just started) or if I've warmed it up and driven it for a few miles (temp gauge in car reads normal). For example yesterday I reported the smoke and sound. Today I...
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    Black smoke/ping sound on hard acceleration

    Sorry for the late reply but my only mod is a CAI and a aftermarket engine mount. Just wondering, what would cause knock in a vehicle like mine (i.e. fairly stock and running 91 fuel)?
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    Black smoke/ping sound on hard acceleration

    Hey guys, I occasionally have a cloud of black smoke come out of my exhaust when I accelerate hard. Along with the smoke there is a sputter or ping that I can feel from the engine. It seems to only happen after I've driven the car easily (no hard acceleration) for a few days in a row or it has...
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    A soft clunk when shifting from 3rd gear to 4th

    I have a sound similar to this. I originally thought that it was a clutch/shifting issue also but then after some testing found that I could reproduce the sound by blipping the throttle at times. I'm having the dealer take a look at it tomorrow but I was curious if anyone else can get it to...
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    mazdaspeed3 cai?

    That's what I was thinking as well but I also thought maybe they never had you reinstall it due to airflow. Thanks for the response.
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    mazdaspeed3 cai?

    What about the large plastic splashguard on the underside of the car that is held on with the 7 bolts? This is one part that they have you remove in the MS CAI instructions but never mention replacing. Do you just leave it off?
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