I AM BOOSTED...but I have vibration ;) - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 09-24-2013, 08:58 AM   #21
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Can you confirm that it's boost related and not RPM related?
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Old 09-24-2013, 10:05 AM   #22
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Okay it seems to be more rpm related it smoothed out a little it seems, but in the 3000 to 4000 rpm range is where it vibrates
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Old 09-24-2013, 10:07 AM   #23
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18 I'm not sure what to video because when I'm in the car the video vibrates the same as the car so it looks like nothings wrong
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Old 09-24-2013, 10:12 AM   #24
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What is your spark plug gap?

Is overboost protection turned on? What is it set to?

What ECU?

You have thus far given us a dogshit description of how your car is equipped and what the problem is. Are you even using a standalone? Harmonic balancer coming off of the crankshaft? Is it vibrating or misfiring? There's a big difference.
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Old 09-24-2013, 10:18 AM   #25
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Sorry your right I havn't. Gap is set to .34, no overboost protection, MS1PNP, it's definitely not misfire we checked that. I'm thinking one of the previous suggestions might be the cause, the exhaust- it was rather difficult to get the downpipe in place and I'm wondering if it's making contact somewhere
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Old 09-24-2013, 10:20 AM   #26
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We need more details on what the hell you have.

Year of car, model of turbo, OEM engine, is there noise with this vibration?
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Old 09-24-2013, 10:22 AM   #27
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1994, gt2560r, oem engine only turboed nothing else, and no noise that I can hear although I dont have a full exhaust yet so it's loud
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Old 09-24-2013, 11:12 AM   #28
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sounds like PPF to gear box alignment or one of the PPF bolts is loose. had the same problem before
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Old 09-24-2013, 11:28 AM   #29
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.... You don't have an exhaust, and you're wondering why your **** is all vibrate-y when you give it the beans?

Oh. Ok.
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Old 09-24-2013, 11:56 AM   #30
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Hahaha. I have an exhaust and my **** still vibrates like a bitch at certain rpms. It's probably your "exhaust" notes resonating throughout the cabin. Hard or soft top? If it's soft try dropping it and see if it helps.
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Old 09-24-2013, 02:41 PM   #31
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Quote:
Originally Posted by Thursday View Post
Hahaha. I have an exhaust and my **** still vibrates like a bitch at certain rpms. It's probably your "exhaust" notes resonating throughout the cabin. Hard or soft top? If it's soft try dropping it and see if it helps.
oh you have an exhaust, just not a full one?

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Old 09-24-2013, 02:47 PM   #32
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Quote:
Originally Posted by Thursday View Post
Hahaha. I have an exhaust and my **** still vibrates like a bitch at certain rpms. It's probably your "exhaust" notes resonating throughout the cabin. Hard or soft top? If it's soft try dropping it and see if it helps.
You cannot be serious
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Old 09-24-2013, 03:04 PM   #33
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Quote:
Originally Posted by Braineack View Post
oh you have an exhaust, just not a full one?

Quote:
Originally Posted by 18psi View Post
You cannot be serious
You guys realize that Thursday is not the OP, right?
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Old 09-24-2013, 03:04 PM   #34
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Then why is he posting his bullshit everywhere in this thread?
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Old 09-24-2013, 03:33 PM   #35
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WTF. I was giving my feedback on his weird *** issue with vibration. Not trying to **** in anyone's thread.

I think somewhere along the line something might have gotten mixed up. I have a normal catback that's loud and resonates at certain rpms causing things in the cabin to vibrate. Thinking the the OP's problem might have something to do with that. Just sayin..
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Old 09-24-2013, 03:34 PM   #36
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You mean the fact that he doesn't have an exhaust means that there might be some vibrations?
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Old 09-24-2013, 03:42 PM   #37
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Yeah just from the lack of his exhaust resonating and being so loud. Maybe I'm just being at idiot but when I first installed my exhaust it was so loud it vibrated all kinds of stuff in the cabin. Then I welded a resonator on it and it toned it down.

If that doesn't make sense I'll butt the **** out lol
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Old 09-24-2013, 07:24 PM   #38
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Thanks Thursday, I would have never thought open piped would have caused vibrations, I'm planning on getting one but I wanted to crank so I skipped out on it lol
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Old 09-25-2013, 07:34 AM   #39
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have you checked the PPF? or are the retarded thoughts on exhausts more important?
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Old 09-25-2013, 10:57 AM   #40
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Unless you've driven a boosted car with no exhaust, you probably shouldn't be saying that pinpointing that as a very real source of big vibrations is retarded.

His PPF may very well be out of alignment. I wouldn't be able to tell if that was causing the vibrations or not in a car that didn't have any exhaust under hard acceleration.
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