TPI Runner Question

[Bruce Plecan]

FWIW, I have a early TB here, and the Throttle Body is set up all in it's
self for the IAC, bypass holes.  No extra passageways needed.
Bruce




> >Wouldn't deletion of your coldstart valve avoid all that drilling?
>
> Nope.  Cold Start air if fed into the underneath of the plenum via a
special
> pasageway.  This pasageway feeds the driver's side 'special' runner tube.
>  If the 'special' runner tube is not present then the IAC air NEVER gets
> to the lower manifold.  He needs a way to vent the IAC air into the air
> stream.  In fact, I ran into a very similar problem a few weeks ago when
> I helped someone install new runners on their '87 Corvette.  He purchased
> Hi-Flo runners that a guy had used on a '91 vette.  Well, the guy with the
> '91 vette had blocked off this tube extra tube on the driver's side (and
> rightfully so).  The guy with the '87 vette installed these runners
WITHOUT
> unblocking the IAC tube.  Can you say hard starts and really rought idle??
>  We unblocked this tube and now all is AOK.
> Tim

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