Running a intank walbro 255 with mods in sig. Spraying a 250 shot and running a standalone with c16 fuel and running 93 in the car. Where is a good starting point on timing. To start safe or is it just bettter to start on the dyno. I have a airfuel that is tapped in the exhaust. thanks

 

im going to be running a 200 shot and c16 in my standalone, and im going to start by pulling 10 degrees and working my way back up...

 

Start low and work your way up by reading your plugs. Hopefully someone reading along will have the time to explain what to look for on your plugs. Depending on many factors, the amount will vary per same size shot. An absolute answer is not going to be had, as every combo is different. But start, like suggest, with at least 10° or more and see how your motor likes it, then maybe more or less will be the ticket.
Robert

 

Depends on your comp and what plugs you are running

 

On a carbed engine we were pulling 4* for every 100 hp shot. This was also through a retard box.