so i want to know what can i do to hold more boost towards redline rite now im boosting 27psi and tapering to 19-20psi. i have the stock dv not crushed stock wastegate so any info would help.

 

Btw my mods are aem intake,fuel pump,injectors,piping and intercooler,full tbe. E-85

 

What kind of boost controller? The only way I've been able to minimize the boost taper is with ECU controlled boost. The MBC wont do it and the EBC is better but still cant.

 

gm 3port.

 

if its the ix valve then crush it.

 

i was thinking about doing that but im not to sure how to.

 

I used a vise and a nut to crush mine at first. Then to get the last bit needed I used a hammer. It'll hold 27 lbs now. It took some trial and error. You should be able to properly control your boost levels with that GM 3 Port. I am able to hold right around 26-27lbsl Its possible a little more time is needed with the tune to get it where you want it.

 

i just might give that a try. i notice also that my boost gauge the neddle tends to move alot.

not sure if thats good or bad?

 

help!

 

27 psi seems a bit high for the stock dv, especially since its not crushed
it will probably take a toll at your wastegate actuator too

 

3port BS and a upgraded wg actuator will help you out tons.

 

your not gonna be able to hold much more boost then 20psi on stock turbo by redline. the turbo just can flow the air up top

 

so a waste gate should help a bit and crushing the stock dv right?

 

+1

 

i dont care if you have a 150psi wastegate on the stock turbo, its still gonna taper to around 20psi by redline. learn how to read a flow chart, then look at one for the stock turbo. the only way to fix this would to be run a bigger compressor and turbine wheel