I have a stock 91.5 W350 and it has no power. By the time it starts to make power, its time to shift gears, what can I do to improve the performance?

 

turn up the pump

 

if i add more fuel will it spool up faster?

 

yes, that is the main intention by adding more fuel the turbo will spool up faster, to much fuel though and it'll just melt the turbo down and possibly not spool much at all

 

any idea how far i can turn the fuel screw and get peak performance and still stay safe?

 

You really need to get gauges first.... BUT as a guideline usually your OK if you turn the screw to the collar... usually... I would get gauges first though.

Other things like a smaller exhaust housing will help spool up more then messing with the full power screw but not really give you much more power. Also look into a 3200 spring, that will allow you to hold the gear longer and carry more boost into the next gear. I would go...

Gauges
Fullpower screw
3200 Spring
Exhaust housing/turbo
Performance Fuel Pin
Clutch....

 

3200 spring will wake it up, night and day difference driving it.

 

Absolutely. If I could do only one mod to a stock truck that would be it - especially a stick.

 

agreed, with our massive turbo exhaust housing it won't spool at stock rpm's

 

https://www.dieselbombers.com/1st-ge...en-sticky.html