Fw: [Diy_efi] Newbie here

[Geoff Harrison]

Hi Dave, welcome aboard.
Your question about advancing the ignition had me stumped for a 
while to.
How can you advance something in time, when it just occurred?

If you take the pulse from the previous point in time , add the 
correct amount of time
to it, (the EM calculates) you get the spark occurring when you 
want it.

Can't help with the marrying of Toyota ign to GM ECM. Might be 
worth considering
GM 3800 V6 DFI.

Geoff.


> Hi all,
> First time poster here.  I'm trying to put TBI on a Toyota 
> inline 6 engine, and I have acquired some parts already I have 
> a 1227747 the original harness from a Chevy k1500, a Throttle 
> body, and tons of reading material.  I just noticed that the 
> TPS  on the Throttle body I have is of the older type 
> plug(looks like the MAP sensor plug), and the harness has the 
> newer roundish plug.  Is my best course of action here to buy 
> a newer sensor, or to find a pigtail and solder it onto the 
> harness?   I'd also like to ask how to understand the bin 
> listings you have on the FTP site.  I don't quite understand 
> what listings are for what engines, and what options.
>
> If anyone has any information on how to interface the 
> distributor off my I-6 engine to the ECM, I'd love to read 
> that as well.  That's the area I am weakest in my 
> understanding.  I don't see how the GM distributors actually 
> change the position of the rotor to change the timing.  I 
> suppose they could NOT change the position and just let the 
> spark jump, but that seems wasteful.  I don't understand what 
> the 4 wires leading from the distributor  actually tell the 
> ECM. (When to fire and when to inject is obvious, but that 
> would seem only like 2 wires.)   Trying to understand what all 
> is going on.
>
>
> Thanks
> Dave
>
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