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www.FAIRTAX.org
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I finally have my boost gauge hooked up and its working well. I was wondering what kind of vacuum readings you guys get. At idle I have about 21 which is normal since most people get 18-22. When I am driving and I back off the gas it will read almost 30. Is this also consistant with normal readings? I can't seem to find that info when I search. Thanks
 

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I used to see somewhere near 30 when I backed off the gas but then I lengthened the tube to my BOV and I can only hit like 24 or so now. Can't notice a difference.

Otherwise I also see around 20.
 

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Devil's Advocate
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18 all day long... 19 if I turn off my radio/amp. 24-26 under deceleration.
 

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Devil's Advocate
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Cams will do it.
 

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On Vacation
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Before cams: 18/19 inHG all day @ idle
After S4 cams: 15 inHG all day @ idle

Manny
 

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70/30 Racing
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11,372 Posts
ThomasSr20 said:
C1 cams with JWT spring valve and retainer
hmm, those should be a little low, but not that bad. whats your cam timing at? 2.5 adv on exh, 2.5 ret on intake would be optimal.
 

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70/30 Racing
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ThomasSr20 said:
My timing is in the middle and i have JWT cam gear.
you should adv the exhaust and ret the intake, it will help spool up and help lower EGTs, etc. less reversion from turbine backpressure that way. just be careful with the cam timing, i ALWAYS reset mine so the timing marks and colored links line up, that way there are NO ****ups.
 

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What funny is when im in La Puenta I get 19 and 25 on decel.

The elevation is like around 600ft there i think
 

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95NismoB14grl
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at 1000 with my Defi guage i get like 22-23 at idle!!! and when i decel like 30
 

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If i let my car just sit an ideal over here at my house in Fontana it'll get 18in/hg when the weather is atleast 75degrees outside
 
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