[audiocontr]

Running JP on stage 1s and stock turbo.

With the redline disconnected, I can spin the tires on a pedal mash resulting in lots of black smoke and a SES light. The code is the standard wastegate controller malfunction. My gauge comes very close to 30 PSI

When i connect the red line, life is much slower. Mashing the pedal does not cause boost to raise as quick and there is no spinning of tires to be found. PSI maxes at just over 20 with sustained WOT.

Does this indicate a need for wastegate adjustment? Any thoughts on how many rotations are needed?

 

[HVAC SuperTech]

You basically have to screw it tighter two or three turns and see how it turns out. There no set number of turns.
If its not what you like, then screw it in some more.
Killing time on here with my smart phone....

 

[85_305]

Running JP on stage 1s and stock turbo.

With the redline disconnected, I can spin the tires on a pedal mash resulting in lots of black smoke and a SES light. The code is the standard wastegate controller malfunction. My gauge comes very close to 30 PSI

When i connect the red line, life is much slower. Mashing the pedal does not cause boost to raise as quick and there is no spinning of tires to be found. PSI maxes at just over 20 with sustained WOT.

Does this indicate a need for wastegate adjustment? Any thoughts on how many rotations are needed?

no, this means your trucks doing what its supposed to be doing; protecting the turbo from overspeeding.

If you want more boost, get a chip. A chip wont blow your turbo or overspeed it; messing with the wastegate will.

 

[audiocontr]

no, this means your trucks doing what its supposed to be doing; protecting the turbo from overspeeding.

If you want more boost, get a chip. A chip wont blow your turbo or overspeed it; messing with the wastegate will.

Sigh...

First line in my post should have read DP, but wouldnt you assume the truck is chipped with stage 1s?

 

[85_305]

Sigh...

First line in my post should have read DP, but wouldnt you assume the truck is chipped with stage 1s?

I guess I did overlook that (figured you meant jp8 or something stupid lol), but regardless if you cant get over 20psi w/ stage 1's and a tune, something is very wrong. I'd be looking for boost leaks, and sending your chip back for a reburn.

 

[audiocontr]

I guess I did overlook that (figured you meant jp8 or something stupid lol), but regardless if you cant get over 20psi w/ stage 1's and a tune, something is very wrong. I'd be looking for boost leaks, and sending your chip back for a reburn.

Or it could be the wastegate adjustment which brings us all back to my original post. Circularity.

There are no boost leaks. I hit and maintain ~30 psi without the wastegate connected which indicates strong boost (and a chip).

 

[85_305]

Or it could be the wastegate adjustment which brings us all back to my original post. Circularity.

There are no boost leaks. I hit and maintain ~30 psi without the wastegate connected which indicates strong boost (and a chip).

It is typically highly advised against adjust the wg on these. hell, my old bone stock minus intake/exhaust super duty could hit 25-ish psi w/ the wastegate unplugged... that means nothing. if the chip is doing its job, it shouldn't need the wg unplugged which will result in uncontrolled turbo speed and overspeeding.

With that being said, OBS trucks w/ chip and stage 1s usually hit 35psi. Same with a super duty. Even if having the wg line off, only hitting 30psi is still less than it should be. Signifying you might need a boost fooler (SD's often do...) or there are leaks that you are unaware of, or the chip needs to be reburned.

 

[audiocontr]

It is typically highly advised against adjust the wg on these. hell, my old bone stock minus intake/exhaust super duty could hit 25-ish psi w/ the wastegate unplugged... that means nothing. if the chip is doing its job, it shouldn't need the wg unplugged which will result in uncontrolled turbo speed and overspeeding.

If the wastegate is doing its job, i wouldnt have the symptoms I am.

 

[85_305]

Ok and if your chip were doing its job you wouldn't be having these problems. If you are fueling properly you wouldn't have these problems. the wg doesnt just go out of alignment. Read my edit in the post above that you've missed.

 

[audiocontr]

Sure it does, the diaphragm loses elasticity over time and duty cycle. Regardless, I never indicated it just happened - that it was a sudden change. I'd bet it was messed with prior to my purchase. Regardless, its pretty easy to adjust (and return to current condition) to check for improvements.

 

[85_305]

Ok. well you can adjust what you like. My money is on a chip reburn or needing a boost fooler.

 

[HVAC SuperTech]

WG's can go weak. Mine did on my stock turbo. Spring can go weak and it will need adjustment. What kind of egts and smoke do you see with the line on the wg and then off the wg? I.still think you should adjust the wg and then see whats up. If the chip was weak or the tune was wrong, you would not see more boost with the line off the wg.

Killing time on here with my smart phone....

 

[85_305]

If you bypass the wg, you are forcing more boost into the system by not letting it bleed off. I bet if you had a tune running 35psi and removed the wg, it would go even higher (or limp out... )

 

[ken6881]

Running JP on stage 1s and stock turbo.

With the redline disconnected, I can spin the tires on a pedal mash resulting in lots of black smoke and a SES light. The code is the standard wastegate controller malfunction. My gauge comes very close to 30 PSI

When i connect the red line, life is much slower. Mashing the pedal does not cause boost to raise as quick and there is no spinning of tires to be found. PSI maxes at just over 20 with sustained WOT.

Does this indicate a need for wastegate adjustment? Any thoughts on how many rotations are needed?

If i were you i would start with checking to see if the green line is clogged. and make sure that the wastegate bypass solenoid (the small thing the red and green lines run to) is working and not stuck shut. Somewhere in this system is your issue because when you bypass it by disconnecting the red line the wastegate actuator has no issue keeping the wastegate closed(you have no issue building boost).
The wastegate bypass opens under acceleration and allows boost to bypass the wastegate actuator thus keeping the wastegate closed building boost up to around 16.5 psi stock then it starts to close keeping the boost from bypassing the actuator which then opens the wastegate thus limiting the max boost level and overspeed of the turbo.

You will need a boost fooler to keep the ses light from coming on above 24psi and this will also keep it from defueling above that.