4.3L TBI

[peter paul fenske]

Howday..

Basically CPI can be treated as TPI or MFI. 
Any ecm / cal that can run a MFI can do so a CPI

Nope 97 doesn't have air door. One of the mods the
racers do is remove this. Prob not a good idea in a
3 ton truck.

Also I believe the earlier CPI used peak and hold
vs the 6 CPI injectors I have are saturated.

Still you could use a 707 peak and hold ecm
or a 747 ecm. This would be a lot more prog right now.

However I believe people are working on the 94/95 cpi 
cals.

The only extra was getting a est controled HEI.

I am really quite impressed with the 4.3 vortec. 
4.6L sohc fords are fun and 26 MPg in 10MPH morning rush hour

Figures GM gets it right and then moves
to something different ala fiero.

later:peter

At 06:53 PM 5/18/98 -0700, you wrote:
>
>Peter
>
>The 97 vortec uses a different intake than the earlier cpi.  These
>intakes are not compatible with the earlier heads, but this may be as
>simple as the intake to head bolt angle.  I am not sure what is
>different.  The earlier CPI has an electronically air door in the
>plenum, does your 97 vortec have this and is it controller by your 91 60
>degree programming?  
>
>>