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Cobb AP Correct Boost Reading - wtf?

Old Nov 9, 2010 | 12:21 PM
  #16  
COBB Tuning's Avatar
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From: USA
I wasn't able to open your logs for some reason, however, if you are only seeing a little bit of correction here and there it isn't really anything to worry about. We only really recommend removing the pill if you aren't hitting your boost targets. If you are hitting your targets then there is no reason to remove the pill. If you aren't, take the pill out.

If you are overboosting with the pill in, try the LWG maps and see if that cures the problem. This can be more prevalent on cars that have catless exhaust systems.

As to the OP are you seeing this boost reading across the board reading steady at 14.36 at ALL load points or just when you are at idle? It should be in vacuum at idle and then show positive boost under load.

Travis
COBB Tuning

Last edited by COBB Tuning; Nov 9, 2010 at 12:37 PM.
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Old Nov 12, 2010 | 10:49 AM
  #17  
boostawd16's Avatar
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From: IL
so i did a performance run with the cobb in, my numbers came out different than the gauge is reading.

boost-
28.4psi-cobb
29-30psi-gauge

vaccum-
-22-gauge
-11.7-cobb

is there a reason why these numbers are so different?
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Old Nov 12, 2010 | 02:47 PM
  #18  
HPEVOX's Avatar
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From: Fyffe, Al
My AEM digital boost gauge reads about 19 vacuum and the Cobb AP says about what yours does its up higher for some reason and even under load there are pretty large differences so i just go by the AEM since it is directly to the vacuum line
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