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2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900

new throttle body performance

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Old Aug 17, 2006 | 9:34 PM
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firered89's Avatar
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Default new throttle body performance

hey guys..

i just installed my new holley 670 cfm the other day, and i can definatly feel some extra torque...however, the overall performance has changed, and it seems to not run as well. i was told that my trucks computer is still running as if i had my stock throttle in. how do i fix this? do i have to get a special chip made and have it programed? any suggestions would be great. i was going to opt for a hypertech thermo master, but i dont know if that alone will help with what im wanting. thanks. zt.
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Old Aug 18, 2006 | 1:59 AM
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HP15's Avatar
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Default RE: new throttle body performance

what year is it
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Old Aug 18, 2006 | 8:18 PM
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Default RE: new throttle body performance

1989
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Old Aug 18, 2006 | 9:55 PM
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Default RE: new throttle body performance

what does Holley have to say? Im sure they could help in some way if you haven't asked already.
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