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Old 03-01-2009, 02:06 AM   #1
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Default Compressor surge

Hey Everyone.

I decided to take my miata for a test drive after i installed the Begi-s turbo kit and megasquirt on it. after driving it for a bit i tried to get into boost and it easily went to 5psi with just about 1/5 throttle in 3 gear. Right when i got off the accelerator i hear massive surge from the turbo. I wonder if this is normal for kit that does not come with a bov?
I already have a bov that i am going to install i am just waiting for a T-piece to come in to install it.

So is this normal to have a surge on a Begi-s kit without bov?

Thanks, Taras
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Old 03-01-2009, 02:27 AM   #2
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Perfectly normal.

Heres the fix

https://www.miataturbo.net/forum/t18840/
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Old 03-01-2009, 02:30 AM   #3
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Quote:
Originally Posted by naarleven View Post
Perfectly normal.

Heres the fix

https://www.miataturbo.net/forum/t18840/
Thats exactly what i am doing. I got a great deal on turbosmart plum back bov that i am installing.
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Old 03-01-2009, 01:19 PM   #4
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record video and post.
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Old 03-01-2009, 03:38 PM   #5
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That is completely normal; nine did the same thing. The BOV will take care of it. If it is adjustable you might have to loosen the tension for it to open, depending on how it is initially set up.
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Old 03-01-2009, 03:42 PM   #6
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yep its adjustable
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Old 03-01-2009, 03:54 PM   #7
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You will be glad you did it. The BOV sounds a lot better than compressor surge.
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Old 03-01-2009, 04:18 PM   #8
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Quote:
Originally Posted by ZX-Tex View Post
You will be glad you did it. The BOV sounds a lot better than compressor surge.
My cheapo from siliconeintakes was perfect right out of the box.
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Old 03-01-2009, 04:25 PM   #9
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I am hopefully going to get it tomorrow. I made a video of me driving today but all i got was static
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Old 03-02-2009, 12:54 PM   #10
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Here is a video of a stalling problem i got. Its only happens when the car is cold.
Picasa Web Albums - Taras - Miata Project
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Old 03-02-2009, 02:18 PM   #11
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so any ideas why this is happening?
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Old 03-02-2009, 02:41 PM   #12
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when i put my bov on it stalled all the time. but i'm running the bov vta with the stock ecu. lol

i got a 1g crushed bov from a mitsu dsm and it took care of the stalling and allowed me to still run vta on the stock ecu.

because the bov is crushed it takes more force to open the valve and closes as soon as the pressure has been relieved just as a normal adjustable bov does.
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Old 03-02-2009, 02:45 PM   #13
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Not sure if this whats causing my cold start idling.
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Old 03-02-2009, 08:42 PM   #14
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any other ideas why i get this idling problem?
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Old 03-03-2009, 12:04 PM   #15
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Probably need more tuning with the MS PNP. Give Tim a call tomorrow, as he is at school today.
Stephanie
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Old 03-03-2009, 08:37 PM   #16
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thats what i thought.
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Old 03-04-2009, 03:26 PM   #17
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