996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Throttle Body Questions

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Old Oct 13, 2005 | 06:26 PM
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Throttle Body Questions

My 01 turbo would turn over then quit after a few seconds. Dealer is replacing my throttle body. Can you guys educate me on the Throttle body, and is there an upgrade for this part? thanks ritchie
 
Old Oct 13, 2005 | 06:39 PM
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The throttle body is a housing that regulates airflow to the intake manifold usually located between the air filter and the plenum

Yes, throttle body upgrades are available but stock should be fine
 
Old Oct 13, 2005 | 07:18 PM
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I thought u had a fuel problem
 
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Old Oct 13, 2005 | 07:30 PM
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Yes, when I would start up, it would fire up normally and then konk out like it had no gas. The gas pedal was also dead. No CEL's. My dealer spent 2 days working on it, besides needing a throttle body, the DME also needs to be replaced. Can anyone theorize what went wrong
 
Old Oct 14, 2005 | 12:49 AM
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Re: Throttle Body Questions

Originally posted by ritchieswimwear
My 01 turbo would turn over then quit after a few seconds. Dealer is replacing my throttle body. Can you guys educate me on the Throttle body, and is there an upgrade for this part? thanks ritchie
The OEM TT TB is 70 mm. The OEM NA 996 TB is 75 mm. Speed Gallery, EVO and IA, among others, offer the larger 75 mm TB for the TT. It is not a direct bolt-on. Rather, the y-pipe has to be modified and/or replaced. Speed Gallery offers the 75 mm TB along with an upgraded intake plenum -- it is an excellent mod.

Photo of OEM TB fitting inside 75 mm TB:



75 mm TB and Speed Gallery intake plenum on left -- OEM TB and plenum on right:





Brochere re: hp gains from upgraded TB and intake plenum:



Craig
 
Old Oct 14, 2005 | 08:32 AM
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hey craig, what is the approximate cost of the plenum upgrade
 
Old Oct 14, 2005 | 03:03 PM
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Originally posted by Mr Kram
hey craig, what is the approximate cost of the plenum upgrade
+/- $1,000 . . . for 35+ hp. IMHO, thats a great value. Call Speed Gallery for exact pricing.

Craig
 
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