C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Feb 3, 2008 | 05:15 PM
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i have tpis on my 85 vett .i took it off to clean it one of the butterfly was lose.is there ajustment? to get it set or trash it and get a new one?
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Old Feb 3, 2008 | 06:06 PM
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tpis?
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Old Feb 3, 2008 | 06:13 PM
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TPIS = Tuned Port Induction Specialties (company)......not a part though.

Do you mean a Throttle Body from TPIS? I'm confused
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Old Feb 3, 2008 | 07:57 PM
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Iam sorry tpis throttle body
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Old Feb 4, 2008 | 06:41 PM
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A factory TPI throttle body? or a TPIS throttle body?
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Old Feb 4, 2008 | 09:16 PM
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It doesn't matter if it is a factory TPI throttle body or a TPIS throttle body. Just position the butterfly so it fits in the throttle bore properly and re-tighten the screws. A little Locktite wouldn't hurt, but generally this screws are staked so they can't back out. I would be sure they are well staked.

RACE ON!!!
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Old Feb 4, 2008 | 11:18 PM
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thank man
but is idle is high about 850 in Drive & 1000 out temp 220 no ajustment
on minimuum idle . disconnect IAC as the SM say .still run about 1000
rpm even turn the tps down no luck. I think I have a vacuum leak?
took it on a test drive run good but high idle
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Old Feb 6, 2008 | 08:40 AM
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Call Jim at TPIS - 952-448-6021, and ask him.
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