wired... hah. Fuel lines are ran in series.(like factory)

 

I'm no expert, but that drawing looks like it's just begging for trouble.. I may (likely) be wrong, but it looks to me like the Primary rail is going to see a majority of the fuel, and the secondary is going to get less than it needs/wants.


If your lines are -6, but your rail is -8, why not just get a male/male fitting with -8 threads on one side, and -6 threads on the other?

 

I was tuning 15U's car two weekends ago and I noticed his did this same thing. I dropped the crossover percentage from 40% to 30% and dropped the Ms to I think .05 and the problem went away.

It was occuring exactly at 40% where the secondaries came online.

The way this works is the secondaries and primaries ramp together given the time duration and the percentage. I don't see a negative to dropping the Ms time delay to almost nothing outside of a little overshoot, but I have yet to see the overshoot?

so try dropping the overlap time value......leave it at 40% and see what happens. I bet it goes away, if not drop the percentage where it ramps the secondaries up.

The settings are on the "settings 5" page.

 

The rails came with four -8 male/male fittings, so i thought id use them. my thinking is the tiny bit of extra volume using -8 line and fittings looping the rails will help even out pressure fluctuations.
also this way i only need to buy two -6 to -8 male to males.

Your concern regarding one rail getting more pressure than the other concerns me. I was thinking the same thing, but then thought if the pump and regulator are doing their jobs then pressure across both rails should be the same? I would be interested to hear others opinions on this as well

 

Stick to single lines at your power goals. A single line should handle anything below 550rwhp with relative ease, especially with regular/race fuel (non-alcohol).