[Diy_efi] running extra injectors off a stock ecu

[Djfreggens at aol.com]

<PRE>why are you doing this ?? just cursrios. i havent had a chance to test long 
term durability on this one. but i recently put 8 low z injectors where 8 
high impenedce used to be. what i did was wire the injectors in pairs in 
sieres then i parraled the pairs. this kept the impedence high enough to keep 
from overdriving the ecm. however and i warn you very strongly this is not 
the best method and im not super sure its gonna hold up in the long run. but 
time will tell.(i have sevral spare ecms to play with) now there are some 
people around here that have built bascially off ecm driver boards that use 
the outgiong injector current to switch the injectors on but use larger 
higher load transistors to fire the injectors . this is a better method. and 
if i knew how to design and build one i would have done this myself. but my 
issue is flyback current what to do with the icnoming high voltage line etc 
etc etc. someone a while back posted a schematic but i didnt think it offered 
enogh protection to the ecm. but its gotta be better then doing what i 
mentioned above. these are options read them and see which works best for 
you.

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