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      11-09-2009, 08:07 PM   #1
gumpy
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BT tool what value do you look at for actual boost?

I got the Bavaian Tech tool and was out looking at actual values for my car. I looked at target boost, suction pipe pressure, charge pipe 1 pressure etc.

The readings are in hectopascals, but when I converted them there is no way any of the readings are right.

It would jump up to 1,1999.99 hpa for suction pipe pressure under full throttle. That converts to 17.4 psi. No way on a stock car!!

Does anyone know if I am looking at the correct value or should I look at something else? By the way, target boost and charge pipe pressure were usually higher values than the suction pipe pressure.

Thanks.

Gumpy.
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      11-10-2009, 07:46 AM   #2
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Quote:
Originally Posted by gumpy View Post
I got the Bavaian Tech tool and was out looking at actual values for my car. I looked at target boost, suction pipe pressure, charge pipe 1 pressure etc.

The readings are in hectopascals, but when I converted them there is no way any of the readings are right.

It would jump up to 1,1999.99 hpa for suction pipe pressure under full throttle. That converts to 17.4 psi. No way on a stock car!!

Does anyone know if I am looking at the correct value or should I look at something else? By the way, target boost and charge pipe pressure were usually higher values than the suction pipe pressure.

Thanks.

Gumpy.
If you are tuned then it is altered and worthless.
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      11-10-2009, 08:25 AM   #3
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Quote:
Originally Posted by gumpy View Post
I got the Bavaian Tech tool and was out looking at actual values for my car. I looked at target boost, suction pipe pressure, charge pipe 1 pressure etc.

The readings are in hectopascals, but when I converted them there is no way any of the readings are right.

It would jump up to 1,1999.99 hpa for suction pipe pressure under full throttle. That converts to 17.4 psi. No way on a stock car!!

Does anyone know if I am looking at the correct value or should I look at something else? By the way, target boost and charge pipe pressure were usually higher values than the suction pipe pressure.

Thanks.


Gumpy.
You should read pressure before throttle body. Then read ambient atmospheric pressure and your actual boost is the difference of the two. I have found no way to get actual pressure read straight out.
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      11-10-2009, 09:00 AM   #4
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http://www.e90post.com/forums/showthread.php?t=233284
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      11-10-2009, 09:03 PM   #5
gumpy
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Thanks guys.

That is exactly what I was looking for.

I should be able to figure it out now.

gumpy.
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