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Howdy,

Dodge in my sig will not make over ~ 28 lbs. Let me give a little back ground. With mods including only a boost fooler and 5" exhaust, the truck used to make ~ 35 lbs. Years later, I upgraded to a GT3782R stage 1. Immediately I noticed lower boost, which I was told to expect. I've never made over 30 lbs with this turbo. For a short period, I reinstalled the factory turbo and discovered I suddenly couldn't make over 30 lbs with it either. Something has changed but I cannot figure out what.

Current mods include: Volant Powercore Intake, GT3782R stg 1, AFE Blade Exhaust manifold, Mr. Bobs Boots, Air Dog II 165, and a Smarty S06 POD set on 90hp w/ timing. I also deleted the electronic wastgate solenoid on the turbo. As the truck stands, it will not make over 28 lbs empty. I've used a boost leak detector. Ran it up to 25 lbs with no leaks. Why won't this truck make boost?? What should I check?

Any help would be appreciated. Thanks.

KB
 

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Air it up to 35 lbs and see if it leaks. What's your valve lash set at? Air filter clean?
 

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Question On doing a boost leak detection, once charged and with no leaks will the system hold pressure or will pressure drop slowly from leaking past piston rings or something?

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