I've never actually sprayed a diesel personally. However back in the 90s, I sprayed a hundred different gassers. NOS dealer for a decade, and beta tested the first progressive controller unit to hit the market.
My specialty was extremely well hidden street systems. Like direct port under the intake, 20# bottle in spare tire hole. Purge into the exhaust.
But those sneaky Pete on steroids style setups usually suffered failures due to trash in a fuel jet. Is hard to explain a hole in top of a piston, when your naturally asperated... lol fun times.
What I learned that's actually transferable to this discussion, direct port as close to the valve as you can get is your sweet spot. Equal distribution is key. Even in a diesel, pistons don't like a blow touch on em while their neighbor is a richer mixture. They all prefer to all be fueled and cooled equally.
I finally outgrew the low power plates and under intake stuff and went full stackded proshot foggers, on a tunnel ram with efi. Piston holes went away, even with 400-600hp shots. So maybe look at stacking some jetted nozzles shooting right down the pipes.. I do appreciate ghetto fogging for its simplicity.. lol
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