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How much vacuum is your car making at idle especially with cams?

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Old Dec 22, 2010 | 03:08 AM
  #16  
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From: Lincoln, Ne
HKS 272's on an 05... I get 17 at 900 rpms
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Old Dec 22, 2010 | 03:41 PM
  #17  
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From: AZ
GSC S2 900rpm 9-10
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Old Dec 22, 2010 | 05:19 PM
  #18  
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My car is at about 12-13 at 1000rpms with COMP 280's.
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Old Dec 22, 2010 | 07:48 PM
  #19  
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From: tennessee
-14 to- 16 hks 272s timing retarded 5 degrees 850rpm once warmed up
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Old Dec 22, 2010 | 08:04 PM
  #20  
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HKS 272 17hg at about 1050rpm
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Old Jan 2, 2011 | 02:06 AM
  #21  
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hks 272s mivec idling about 950-1000 drawing -13 which.
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Old Jan 2, 2011 | 09:16 AM
  #22  
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From: riverside, ca
evo 8 hks 272 i&e cams idling at 1000 rpms with no vacuum leaks im at 15 in hg
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Old Jan 2, 2011 | 05:06 PM
  #23  
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From: Houston, TX
mods in sig.
ex. gear -3.75

1000rpm idle with -10 vac.
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Old Jan 2, 2011 | 05:08 PM
  #24  
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From: pa
2.3L motor, built head, kelford272

idles at 1000rpm and vacuum is 14
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Old Jan 2, 2011 | 05:15 PM
  #25  
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From: pa
Originally Posted by My03evo
I might buy a car with HKS 272 cams in a 2.0 and during the test drive I noticed what seemed to have low vacuum, I'm new to camming out imports but even with a nice size cam in one of my v8's I had higher vacuum....although I know its like comparing apples to oranges also.

I know it depends on cam timing, ignition timing, stroke, the tune itself and the healthyness of the engine but what's everybody vacuum at idle and what rpm does your idle at?? This car I believed was idling around 1,100 I assume to help prevent it from stalling/loping/weak brakes with the low vacuum, etc...but curious on what everybody else's vacuum is at and at what rpm...

I would do a leakdown test and compression test before actually purchasing the vehicle so you can assure its all good.

Also, if it has stalling issues then biss can get adjusted. (base idle set screw). . if that does not fix the issue then you can adjust the Desired ISCV tables in the ecu which control the idle air controller stepper motor.

Cool thing about these cars is, the stock ecu is so strong that you dont even need a aftermarket ecu to get your $'s worth mod wise.
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Old Jan 2, 2011 | 08:22 PM
  #26  
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From: Los Angeles
with stock cams i was at about -20
i have hks 272's and the vacuum is about -15. idel is at about 900 rpm
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Old Jan 2, 2011 | 09:15 PM
  #27  
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From: Sterling Heights, Michigan
-20, stock cams, ~900-1000 idle
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Old Jan 3, 2011 | 02:41 AM
  #28  
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From: Mass.
I got kelford 272's and at 900 rpm.. around -8 to -7
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Old Jan 3, 2011 | 06:14 PM
  #29  
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From: chicago,il
jessica simpson 272's idle at 1000rpms
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Old Jan 4, 2011 | 07:51 AM
  #30  
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Kelford 272 1100 RPM -10
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