95 f350 d66/injector question

[Birdsall63]

Hi another one of those new guy questions . I have a95 f350 7.3 cc standard transmission long bed .
My question is since I still have stock injectors with a bigger turbo is this hurting my boost or lack there of. Have only seen around 8- 10 psi . Would I be better off with my stock turbo back on it .

Performance mods .
D66 Turbo
Ts 6 position chip
Afe big boost
Gauges fuel press,boost,coolant temp,egt mounted ds manifold
3 inch down pipe stock exhaust but got rid of muffler and cat

Any input or thoughts appreciated Thanks joe .

[virgin stroker]

should be getting more then 10. look for a leak somewhere.

[Birdsall63]

I would think so to. I have checked the clamps and boots numerous times hoping I could find something (thanks virgin stroker) .my chip is not programmed for the bigger turbo could that be it .

[OL' OutLaw]

you my well have a drive side leak ....check your exhaust manifold bolts...make SURE the manifolds are not leaking, and the uppipes are not leaking

[virgin stroker]

turbo is driven by exhaust pressure . which is determined by the ammount of fuel introduced. i bet you are down on power and poor fuel milage

[Birdsall63]

Fuel mileage is not to bad I am hauling pretty heavy . Power yes when I come to a hill and you expect the turbo to wind up it doesn't . I am goin to go check exhaust manifolds and pipes thanks for the help.

[OL' OutLaw]

when checking the exhaust manifold bolts, bear in mind that they are somewhat of an "Interference Fit" ... . they go in hard, and come out hard....I would suggest that on that old of a rig, you replace them....I did mine one atta time, start in the middle of the manifold and work your way out.....and be sure to use Never-Seize on the threads AND the flange head....torque to 50 ft lbs with new bolts ...... made a huge difference in my rig....

[Birdsall63]

Ok I will have to do that. I am starting to wonder if I just need to get larger injectors and hpop

[1Dieselman]

Any ideal how much boost you where making before you put the larger turbo on? Unless you have a cali truck I don't think you will see much if any more boost with the stock injectors and larger turbo.

[Birdsall63]

nope no idea i got the turbo used for a good price when i first got the truck so i didnt have my gauges in yet. and not a cali truck . with just driving the truck with out the trailer i can get 15 maybe 18psi but the only way i get that is turning 3k rpm.