Feel like it should be much faster

[svt28640]

I ran 10.20 in 8th mile last night. 4x4 boosted launch. Sems slow for all thats done?

[jesilvas]

On that 7.3?
Fuel pressure might be a little low? I'd bump it up near 65 or higher, unless you tried that and it likes that pressure. Stock injectors and canned tunes I assume?

[svt28640]

Im running 90 psi an yes canned tunes

[jesilvas]

Oh ok, sig said 55.
Not sure what else to suggest. Maybe the spool up time is slow cause of the bigger exhaust housing?

[Dirty_Stroke]

Sounds about right to me. Maybe you should have been a touch faster. But the amount of fuel you had in the tank, humidity, track conditions, how much boost you was launching at, all have a role. I would think your setup should be in the 9.7-9.8 range. My buddies 02 7.3 CCSB on stock tires and wheels runs consistent 10 flats. He broke a 9.98 once. It is DP 5 position tuner, intake, 4 inch exhaust, shimmed fuel pressure spring. And that was launching in 4 high as hard as he could get it to spool every time.