On a TBI setup with megasquirt will there be any difference between the two injection styles. 1800cc injectors in case if it matters.

I was wondering if anyone knows the thread pitch or size of the turbo drain barb on the timing cover? i believe the Barb is 5/8 but the thread pitch i have no idea.   Thanks for the help.

Just wondering if anyone has experienced any rough idle issues? I'm gonna see if I can get my old stockers to work and tell a difference later today. Seems to run fine just idling is rough.  

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