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TPI OR Throttle Body???

This is a discussion on TPI OR Throttle Body??? within the General Help forums, part of the LSx Technical Help Section category; I have a 2000 WS6. I assumed that it came stock with a throttle body. I was showing the engine ...

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    Junior Member gregreen_1's Avatar
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    2000 trans am

    TPI OR Throttle Body???

    I have a 2000 WS6. I assumed that it came stock with a throttle body. I was showing the engine off the other day talking about porting the throttle body and a friend of mine said that I do not have a throuttle body on my car it is TPI? What is the difference between the two. Is TPI better? How can I tell them apart?

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    MOTOR CITY MARO' SSTODD's Avatar
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    PEWTER
    2000 CAMARO SS #3821

    Your buddy is confused, TBI is throttle body injection- old technology and is no longer used. TPI is tuned port injection- the next generation like the IROC had in the late 80's. You have a throttle body on the front of your intake (it's the butterfly that the throttle cable opens and closes) and is now called a multi-port injection or MPI or MPFI I believe. TBI was a carb looking thing on top just like a carb. You can and should have it ported and then show it to him.

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    Senior Member Wheeler99WS6's Avatar
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    black, 05 Roush
    black, 99 T/A WS.6

    +1....

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    Junior Member gregreen_1's Avatar
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    Cool.. I have read many threads in here and never once heard someone talk of TPI & the WS6 model. Thanks for the info.

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    Senior Member Wheeler99WS6's Avatar
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    black, 05 Roush
    black, 99 T/A WS.6

    All LS1's have a throttle body from the factory.

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    !!!!!!!!!!!!!!!!!!!!!!!!! ATCharming's Avatar
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    MY car is TBI. yours is not. hence why urs is better lol. plus the 45 extra cubes u have

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    Senior Member greatwhiteZ28's Avatar
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    our sponser new era performance does port / polish jobs soo does a guy named shaner if your looking still to do that, its like a buck and a half i think

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