I run a toilet bowl also, but on a s/blk. 377" Still need more imfo. what size bowl are you running, mine is a 4.1, you may have the larger one for a big blk..
my thinking is that the pump you have is not big enough. I have talked with James a few time's, and bought additional parts. they say their dash-1 pump will run stacks injection, this i donot buy, since at 4000.rpm's it only puts out 3.8GPM.
I personally run a DSR pump on mine which puts out around 6GPM and no highspeed bypass. I think i could run better on top end with 1 installed.
In the heat at Memphis i run .080 to .090 jet. the only problem is i leave the line at 190* and get back to the pits at 170* no EGT installed,No carb box on top, just a cowl induction hood. Lot's of things wrong on my car, but it's as crisp as carberator, barrel valve set at 23lbs leakdown. i can can also run round robin and never turn on the water pump.
I think 14lbs at the nozzles is not enough pressuse there, i would get a bigger pump, and install a hightspeed leanout, set it at 65lbs starting point and work down from there. That's where i set my stacks injection at.
The manifold cannot get cold because there's no alcohol in it, (only air) unlike running a carb where the alcolhol passes thru the manifold, that in respect is where the argument starts that carbs run better that bowls because thr fuel charge is colder.
Bottom line i would get a higher pressure to the nozzles so they can spray rather than dribble and i think you'll see a major increase in performance.
JMO
Zip.