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2000 Silverado 4.8 lacks power at temperature

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Old 08-01-2010, 06:35 PM
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Default 2000 Silverado 4.8 lacks power at temperature

Mods in sig. When cold the truck runs great. All kinds of power, will blow the tires off through second gear as long as you keep your foot in it but as soon as it gets some temperature in it the power is gone. Forgot to mention that it also has 30 pound injectors. Dont know what tune is in it as I just got it and havent had a chance to get it on HP Tuners but any ideas???
Old 08-01-2010, 07:03 PM
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is that vortech intercooled? who tuned it? Has it always been this way? just started?
Old 08-01-2010, 07:14 PM
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Non intercooled, dunno if its tuned or not and I just got the truck and as long as I have had it it has been this way
Old 08-01-2010, 07:44 PM
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Originally Posted by nitrouspowrdss
Non intercooled, dunno if its tuned or not and I just got the truck and as long as I have had it it has been this way
That sums it up right there. Those non intercooled vortechs are fire breathers. Once that truck gets hot is it pulling all of the timing out. Take it to a dyno shop and have them tune it for you.
Old 08-01-2010, 07:50 PM
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Yeah I figured as much. Was gonna order an intercooler for it. Ill get on that tune and see what happens.
Old 08-01-2010, 08:35 PM
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You might want to consider not going WOT again until you have it tuned.
Old 08-01-2010, 09:20 PM
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I rarely do anyway. The truck is a daily driver/tow rig for the S10.
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