Need help on hpo system

So I have an issue and It comes down to the hpo system. At wot the truck flat falls on it's face... Cts is showing any where from 2.8-3v under wot runs... Runs great and is a beast on the bottom end... Now I've been told it could be anything in the system... Oil rails, the nipples on the oil rails, injectors, injector orings... I'm at a loss on where to start, I have no long cranks, cold start is normal other than a little stiction, hot starts are perfect... Runs perfectly fine just falls on it's face... I need ideas on what to look for where to start diagnosis and all around ideas...

I ran it at the track laid down a whopping 14sec quarter 1.8 60ft 1600*egt, no boost leaks, no Exhuast leaks... Couldn't even break 90mph....



Mods:
205/75s
Ported intake
S368
Rr, a1000 65psi sump
Gearhead tunes
Built trans

Sounds like injectors are cut ti big or crappy seals

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Worn springs inside could be a lot of things but definitely injector related

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I had the same issue with my 175/stocks... I always thought they just needed nozzles... These are different than the 175s tho...

I'm would be willing to bet on its injector related

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Have you confirmed fuel pressure at wot? What is your icp doing at wot?

Fuel psi is 65psi wot, icp I'm not monitoring I'm just going off volts

G Racing said:

Have you confirmed fuel pressure at wot? What is your icp doing at wot?

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I take that back we had ae on it at the track dropped as low as 2100psi and 2.4v


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What's IPR % when the it's at that pressure?

CTC DEEZUL said:

What's IPR % when the it's at that pressure?

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No Idea I didn't think to monitor it