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Old 6th April 2012, 08:31 PM   #1 (permalink)
Jakobsen is waiting for SUMMER !
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R32 overboosting

Hi

Have a problem Whith my r32gtr, it has GT40R and 50mm HKS wastegate and it is connected as instructed on the paper. I have an greddy prof spec 2 boost controller

The wastegate spring is 0,8bar

The car is overboosting even if the boost controler is off. 1-2 gear overboosting 1,2-1,3bar on the boost controllere display, but why is it overboosting ?

Is it the pressure that is to Big on the vaccum / pressure hoses ??

The pressure does keep rising after 7400rpm :/
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Old 6th April 2012, 09:06 PM   #2 (permalink)
jabran200 is Breaking an r33 vspec pm me
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can you show is hwo you have connectedt he wastegate vaccum? maybe drawing in paint or something.
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Old 6th April 2012, 10:01 PM   #3 (permalink)
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Does sound like you have piped up the wastegate wrong. Have a look at the picture below and hopefully it will help you out mate.
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Old 7th April 2012, 06:03 AM   #4 (permalink)
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Here is an link til the Proff spec 2 manual
http://justskylines.com/knowledgebas...EC_B_SPEC2.pdf

The solenoid is set like this

NC : Pressure in from IC pipe
Com : Pressure to top of wastage
The bottom of wastegate is also in an T to the pressure from IC pipe
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Old 7th April 2012, 06:04 AM   #5 (permalink)
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i will try to run whiteout boost controller and just use the top hose, to the ic pressure pipe to see if it still over boost so much
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Old 7th April 2012, 09:44 AM   #6 (permalink)
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now i have tried to connect the pressure hose directly ontop of the WG, no control at all

i don't understand why it wont just run spring boost ?
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Old 7th April 2012, 10:04 PM   #7 (permalink)
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Tested the wastegate whitout spring, but still at 6000 and up it rasede boost to 1,5bar
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Old 7th April 2012, 10:20 PM   #8 (permalink)
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Quote:
Originally Posted by Jakobsen View Post
Here is an link til the Proff spec 2 manual
http://justskylines.com/knowledgebas...EC_B_SPEC2.pdf

The solenoid is set like this

NC : Pressure in from IC pipe
Com : Pressure to top of wastage
The bottom of wastegate is also in an T to the pressure from IC pipe
Pressure in from fpr pipe should go to NO port
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Old 7th April 2012, 10:51 PM   #9 (permalink)
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Look at page 11 it says pressure to NC port.

Well it looks like my manifold / wastegate is crap and hang handle the pressure. Wll try to modifi it Whith 2 38mm valves
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Old 7th April 2012, 11:16 PM   #10 (permalink)
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Look at page 11 it says pressure to NC port.
You're right. I was looking at actuator not external waste gate doh!
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