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DBW THrottle body

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Old Mar 9, 2021 | 07:34 AM
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Default DBW THrottle body

Guys,

which DBW Throttle body would you recommend to fit this conf?

LQ4 + LS1 intake + Silverado 2006 ECU/TAC/harness

Any supplier to recommend?
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Old Mar 9, 2021 | 08:17 AM
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78mm stock DBW truck TB. Or if you go with an NBSS intake go with the silver blade 90MM LS2 throttlebody and conversion harness.
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Old Mar 9, 2021 | 09:11 PM
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Originally Posted by ryeguy2006a
78mm stock DBW truck TB. Or if you go with an NBSS intake go with the silver blade 90MM LS2 throttlebody and conversion harness.
I'd avoid the LS2 throttle body like the plague and use the LS3 throttle body. The plugs are the same between the two, the LS3 TB is less expensive, easier to find and much more reliable.
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Old Mar 10, 2021 | 06:32 AM
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I'm confident that the P59 ECU won't control an LS3 gold blade throttlebody. I've not done it personally, but the two throttlebodies rotate in opposite directions which causes an issue with the earlier ECU's.
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Old Mar 10, 2021 | 06:57 AM
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ryeguy2006a > I think my issue is there, because my actual TB might be in good condition but it's coming from an unknown car and is probably incompatible with my actual TAC/ECU despite it is fitting my LS1 intake

Do you have a part # I could look for? Cause when I enter "ls2 throttle body wire" on summit nothing convincing is showing up
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Old Mar 10, 2021 | 11:43 AM
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Originally Posted by mjollnir
ryeguy2006a > I think my issue is there, because my actual TB might be in good condition but it's coming from an unknown car and is probably incompatible with my actual TAC/ECU despite it is fitting my LS1 intake

Do you have a part # I could look for? Cause when I enter "ls2 throttle body wire" on summit nothing convincing is showing up
http://www.summitracing.com/parts/sm.../gto/year/2005
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Old Mar 10, 2021 | 12:07 PM
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Thank you, do I need an IAC with that TB ?
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Old Mar 10, 2021 | 12:16 PM
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DBW TB's don't use an IAC. ECM controls throttle opening to adjust idle.
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Old Mar 11, 2021 | 12:06 AM
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Would this part also fit (cheaper) ?

https://www.summitracing.com/parts/a...0-hd/year/2006

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Old Mar 11, 2021 | 05:06 AM
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Originally Posted by mjollnir
Would this part also fit (cheaper) ?

https://www.summitracing.com/parts/a...0-hd/year/2006
Two different animals. One is a three bolt and one Is four bolt. With the LS1 intake it should be a three bolt and the second one would work. Also check electrical the connectors.
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Old Mar 11, 2021 | 06:38 AM
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Originally Posted by mjollnir
ryeguy2006a > I think my issue is there, because my actual TB might be in good condition but it's coming from an unknown car and is probably incompatible with my actual TAC/ECU despite it is fitting my LS1 intake

Do you have a part # I could look for? Cause when I enter "ls2 throttle body wire" on summit nothing convincing is showing up
From what I've seen there is usually more of an issue having the TAC/ECU/Pedal all from the same vehicle or compatible with one another. Generally the TB isn't as much of an issue. I'd just throw the TB that you have on the car and test it out before buying another TB.
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Old Mar 11, 2021 | 06:42 AM
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My TB doesn't react to anything, that's why I decided to buy a new one
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Old Mar 11, 2021 | 07:10 PM
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Originally Posted by Rich-L79
I'd avoid the LS2 throttle body like the plague and use the LS3 throttle body. The plugs are the same between the two, the LS3 TB is less expensive, easier to find and much more reliable.
I've always been told the opposite. Silver blade ls2 throttle bodies work for me.
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Old Mar 18, 2021 | 04:06 PM
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Originally Posted by ryeguy2006a
I'm confident that the P59 ECU won't control an LS3 gold blade throttlebody. I've not done it personally, but the two throttlebodies rotate in opposite directions which causes an issue with the earlier ECU's.
The ECU doesn't care what direction the blade opens.

They are plug and play. Bolted one right onto my LS2 with no other modifications and no updates to the tune. Ran just fine. Checking the tune, no adjustments were needed. Runs flawlessly unlike the three different LS2 TBs I had that threw codes all the time resulting in "reduced power mode".
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