acis modification

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The Magnificent Seven
Oct 16, 2005
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is there any way to mod the NA intake/ACIS switch so the ACIS activates earlier than ~4k rpm? would there be any benefit?
 

BorHor

2JZ-GZE
Jan 10, 2006
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When I drive I dont really feel crap when it goes on. I just like to hear the sound though. Maybe it is my clutch that is holding me back.
 

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The Magnificent Seven
Oct 16, 2005
2,738
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i honestly feel it kicking in. its like i've almost dropped a gear, but the car will pull harder instead of trying to fade out at the higher rpms.
 

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The Magnificent Seven
Oct 16, 2005
2,738
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mr. nickleye sounds pretty knowledgeable on the subject, i got the idea after someone was asking about removing the vacuum reservoir.
 

CRE

7M-GE + MAFT Pro + T = :D
Oct 24, 2005
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Given that the ACIS is vacuum actuated I'm sure you could either rebuild the VSV that controls the ACIS valving with softer springs OR put a small vacuum booster on the line to it.
 

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The Magnificent Seven
Oct 16, 2005
2,738
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ok, so theres a theory.

would it pull the torque curve down with it though? if i could get it to kick in at 3k-3500 rpm with the same amount of power at 4, id be a happy man.
 

Nick M

Black Rifles Matter
Sep 9, 2005
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If you can feel it kick in, then it does not work.

Low speed torque is deficient for the plenum size and RPM use. So that increases low speed power.

If yours does not work, then you will always be on the high rpm curve.
 

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The Magnificent Seven
Oct 16, 2005
2,738
9
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must be late, cause i didnt understand a word of that. sorry Nick, could you dumb it down for me?
 

Big Wang Bandit

You Can't Quit Me Baby
Feb 21, 2006
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The intake is too big to give an NA 7m enough torque at the low end. So they close them off untill your over 4000rpm then you get the full intake and you go wheee and get a cool noise.
 

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The Magnificent Seven
Oct 16, 2005
2,738
9
38
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Virginia
never heard the cool noise, but the rest explains it. thanks all.

Hells, im going to bed. House's eyes just followed me as i scrolled up, i swear to god.