I AM BOOSTED...but I have vibration ;) - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-23-2013, 09:43 PM   #1
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Default I AM BOOSTED...but I have vibration ;)

So I started my car today and got tuned and drove! However I have intense vibration when boost kicks in. If I was a girl I wouldn't mind it but it's rather obnoxious any suggestions as to what this is? Or is it a normal thing
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Old 09-23-2013, 09:44 PM   #2
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No that is not normal at all.
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Old 09-23-2013, 09:45 PM   #3
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Yeah I thought so as well, but I have no idea where to start figuring out what it is
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Old 09-23-2013, 09:49 PM   #4
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Describe the vibration.
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Old 09-23-2013, 09:51 PM   #5
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The car runs smooth when not in boost when boost comes on the car vibrates I can still see out of the mirrors so its not horrendous but it is not something you can ignore
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Old 09-23-2013, 09:53 PM   #6
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Check for shaft play in the turbo.
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Old 09-23-2013, 09:55 PM   #7
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I will, however last time I checked it which was a few weeks ago before mounting the turbo there was none
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Old 09-23-2013, 10:47 PM   #8
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Can you hear anything unusual or just feel the vibration?
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Old 09-23-2013, 11:04 PM   #9
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Do you have a wide band hooked up?
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Old 09-23-2013, 11:15 PM   #10
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Are your wheels spinning cause of all the turbo powa
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Old 09-23-2013, 11:42 PM   #11
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I don't hear anything unusual, I do have a wideband, and yes the wheels are spinning. Previous to the turbo install we had to change the water pump and you guys know all the work req. for that. So maybe something involving water pump replacement?
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Old 09-24-2013, 12:01 AM   #12
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there's nothing special inolved in water pump replacement.

you probably screwed something up
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Old 09-24-2013, 12:29 AM   #13
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Quote:
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you probably screwed something up
but it just doesnt make sense lol.
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Old 09-24-2013, 12:32 AM   #14
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Mis-fire from blow out?
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Old 09-24-2013, 12:34 AM   #15
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Exhaust vibrating against the subframe/tranny?
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Old 09-24-2013, 01:02 AM   #16
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Mis-fire from blow out?
My guess would be this or the clutch giving up the ghost
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Old 09-24-2013, 01:28 AM   #17
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without a log and video we'll be here all day
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Old 09-24-2013, 01:29 AM   #18
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Driveline out of balance? Motor mounts? How much power are you making? Maybe when you're under boost your chassis is flexing causing something to become Mis-aligned and put of balance. I've driven a couple high hp miatas at the shop that under load everything kinda flexes.
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Old 09-24-2013, 01:44 AM   #19
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We need logs of your driveshaft NAO!
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Old 09-24-2013, 02:04 AM   #20
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Quote:
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We need logs of your driveshaft NAO!
fixt
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