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Something backwards, vacuum under boost?

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Old 09-14-04, 02:53 PM
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Speed Mach Go Go Go

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Something backwards, vacuum under boost?

Does anyone have previous experience in this? My idle is hunting from 1k-2k and when it revs it shows vacuum and when the engine lets off the throttle it shows boost. The oil pressure is in tune with the rpm's but what the heck is up with boost?

Last edited by GoRacer; 09-14-04 at 02:56 PM.
Old 09-14-04, 03:10 PM
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You saying that you get vacuum when let off gas pedal? Is supposed to do that.
Old 09-14-04, 03:16 PM
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no...he's saying it shows vacuum under throttle and boost when off throttle.

That ****'s messed up
Old 09-14-04, 03:42 PM
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oh!!! that's weird. are your turbos mounted backwards? j/k
Old 09-14-04, 03:53 PM
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Make sure its not your boost gauge going bonkers. It seems the laws of physics would govern whats happening to you as impossible. Then again, its an RX7, so you never know.
Old 09-14-04, 07:11 PM
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Are you sure that you have the boost gauge connected to the correct vacuum port?
Old 09-14-04, 07:20 PM
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Did you just recently install this gauge?
If it's an electronic gauge, then you might have confused a pair of wires. If it's mechanical, then I don't know what to tell you.
Old 09-14-04, 07:25 PM
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MY CAR IS DOING THE SAME ******* THING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

this is with my new 1/2 bridge ported motor, it just wont find a good idle spot, when i have my lights and ac on it will idle like a 1/2 bridge should but when its off it does that.
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