Intro and project

[CSH-HQ]

Massive snippage
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>1.  What do I do for VSS?   I need the mech. drive for the speedo.

Use a taxi speedo-cable inline mileage measurer.

>2.  Do I stay MAF, or get a cal for speed-density?  I have no problem
>ducting the MAF sensor, and I have 2 known good units.

The only MAP 165 is the holdens, and the diacom for that is very limited,
IMHO

>3.  I've changed out the 350 for a later 403 motor.   Will the 350 cal work
>if I bump the fuel pressure a little, or will I need larger injecters?

You'll never really know till ya try, on something like this.  I'd try that 
first, and see what happens.

>4.  Will the TPI throttle body flow enough for the 403?  The motor is
>fairly close to stock (it's a mystery motor.  All I know is that it was
>"rebuilt"), iron manifolds and full duals out to the back.

If it ran well with a small Q-Jet I'd say it would at leaast do well.

>5.  Should I stick with the 165, or try and get a later unit?

165 and MAF is easier for the first timer than a MAP.  But, personally I 
like MAPs.  The 730 thou, is a very good unit, and using Diacom with it is 
the berrires.  

>6.  If TPI injectors won't work with my fuel rail, are there any large
>enough Bosch units for my needs?

There are some really large Bosch units.  Generally the TPI injectors are a 
universal lenght/diam..  Some maybe a 1/8" short but work fine from what 
I've heard.

Do yourself a favor, and get a used/new diacom.  After 100's of ecm bench 
time. Using that with a 730 is the only way to go in my book.
Grumpy
(Breathing well due only to an organ donor).

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>I realize this message crosses spans the diy_efi list AND the gmecm list,
>but I'll start here.
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>--> Bob Valentine
>--> bob at tecmark.com
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