Injectors & harness

[David A. Cooley]

At 08:52 PM 5/3/99 -0700, you wrote:
>My '92 6 cyl vortec 4.3 (vin W) has a single CPI injector (Central Port
>Injector as describe in the factory service manual).  It is a single
>injector with six flexible tubes coming off and special nozzles at the end
>that maintain pressure in in the tubes when the injector not flowing.  The
>nozzles have plastic clips that hold them into holes at the end of each
>intake runner.
>
>I thought the Syclone (vin Z?) actually had 6 injectors. 
>

It does

>Anyways, the CPI does inject at the port, but I haven't heard it called a
>TPI injector. 
>

The TPI  just means tuned port injection... CPI is actually TPI, as the CPI
manifold is tuned for specific torque peaks at 2 different RPM instead of
just one...Air door closed (low RPM) and one with it open (high RPM).
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           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
     Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
   Sponges grow in the ocean... Wonder how deep it would be if they didn't?!
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