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H22 running on P28 question

Old 05-03-2005, 08:26 PM
  #1  
3.0 BAR
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Default H22 running on P28 question

If I run a H22 on a P28 ecu will the butterflies stay open?
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Old 05-03-2005, 10:46 PM
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Default Re: H22 running on P28 question

Are you leaving them connected on the intake manifold.

And if you are asking if the P28 will control them...no, unless you add the circuitry for it to do so.
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Old 05-04-2005, 02:08 AM
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Default Re: H22 running on P28 question

I think that he's asking if he leaves them connected but doesn't use the p28 to control them, whether or not the butterflies will stay open or if they will stay closed.
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Old 05-04-2005, 02:45 AM
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Default Re: H22 running on P28 question

If you disconnect the vacuum lines from the actuator thingy, they will stay open.
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Old 05-04-2005, 06:05 AM
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Default Re: H22 running on P28 question

Ok thanks...yeah just wanted to know if i don't use the P28 to control them with the IAB conversion if they would stay open.
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Old 05-04-2005, 06:14 AM
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Default Re: H22 running on P28 question

yeah, that's what most people do if they still have the stock intake manifold, you may lose a little torque on the bottom end, but it's not like a 'night and day' difference.
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Old 05-04-2005, 06:25 AM
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Default Re: H22 running on P28 question

It's gonna be boosted anyways.....
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Old 05-05-2005, 09:27 AM
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Default Re: H22 running on P28 question

If its gonna be boosted, you want them open.
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Old 05-06-2005, 05:51 AM
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Default Re: H22 running on P28 question

Yup that's what I want
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