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Weird boost numbers

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Old Jul 16, 2016 | 07:52 PM
  #1  
Mater08's Avatar
Mater08
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Weird boost numbers

So running into an issue with boost numbers. Factory gauge reads between 20-30lbs on throttle, but I have a SCT x4 and it only reads 3lbs and at idle it only reads .25-.89 somewhere around that range.
Are these numbers accurate?
Also, it has developed a sort of buck or chug at like quarter throttle while accelerating, it's sluggish leaving stop signs etc. and it sounds like the waste gate or blow off it holding on even after I let off of the throttle.

Any ideas?
 
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Old Jul 16, 2016 | 09:10 PM
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Unclemark's Avatar
Unclemark
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I don't think variable geometry turbos have pop off valves or waste gates.... Maybe ficm issue? I'm not very well versed on the 6.4's though.
 
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