What tables to mod to increase boost on a 04 LLY [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: What tables to mod to increase boost on a 04 LLY


SEA04DMAX
02-18-2008, 01:35 PM
Exactly what tables are modded to increase boost on my LLY????

Could someone spell it out to me???

Thanks

RaceHemi
02-18-2008, 03:15 PM
Adjust the Desired boost level, Turbo Vane Position, A, B, or C tables depending on your altitude. With C being low altitude. Making sure your max and min vane position tables are adjusted accordingly.

stacks04
02-21-2008, 10:48 AM
i've modded the desired boost levels it is a simple pressure adjustment. the only thing is you have to subtract your atmospheric pressure from the table nums to get actual boost. i haven't had to adjust the vain tables yet to acomplish what i want. and don't get any lights as of yet. i see good boost throughout and max at 30-32 psi but rarely go over 15psi:D

duramaximizer
02-21-2008, 11:00 AM
So which is better higher or lower? Or is it the change in Delta? Be closed then open way up?

RaceHemi
02-21-2008, 02:28 PM
Closed or higher % = higher boost, higher drive pressure
Open or lower % = lower boost, lower drive pressure

Typically you will see a higher % vane position at lower rpm to build boost while opening them up as rpm's increase which decreases drive pressure and allows the engine to breath more freely.

So which is better higher or lower? Or is it the change in Delta? Be closed then open way up?