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Discussion Starter · #1 ·
Car - 2004 Mazda6i / 5 speed
Intake - Mazdaspeed Cold Air/part # GRMS-8M-H30

Problem - Car runs fine, idles fine until cruising along at any speed above 25+ (?) and then taking the car out of gear (any gear, any speed above previous mentioned) then the engine will want to stall if left out of gear as well as TCS Lights come on-sometimes engine lights. I can restart the car (system still on) and car runs fine (TCS lights still on although) unless I restart (turn key off) to reset diagnostics then lights go out car runs fine. Until take the car out of gear again...

left in gear slowing down/stopping everything is fine.

Question - Why or what would cause this? Is there something I missed during install of intake.

Sincerly stumped and thanks to all those reading...any help would be nice, pics if anyone has'em
 

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Premium Member
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9,080 Posts
1st guess would be vacuum line attached to the intake, or one moved/adjusted at the time of install. quite normal.

outside of that, take it to a dealer
 
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Discussion Starter · #3 ·
1st guess would be vacuum line attached to the intake, or one moved/adjusted at the time of install. quite normal.

outside of that, take it to a dealer
[/b]
4 hours, two maf sensors an ecu reprogram/upgrade they still don't know
 
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