LBZ: Wastegate

othrgrl

Diesel Addiction Owner
Mar 10, 2008
2,151
4
38
Wilmington NC
www.mydieseladdiction.com
Exactly, your LBZ has a variable turbo which doesn't have or need a wastegate. With EFI Live the turbo can be completely tuned to act how you want - even as an engine brake for your tow tunes.
 
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beerkiller33

New member
May 27, 2009
3
0
0
Lodi, WI
super scoop

Thanks that explains a lot, I am a dumb ass.
I am however thinking about adding the banks super scoop under my hood. does anyone think that it is worth the money, will it really help improve anything?
 

othrgrl

Diesel Addiction Owner
Mar 10, 2008
2,151
4
38
Wilmington NC
www.mydieseladdiction.com
We have made over 530hp on a stock LBZ intake with an AC Delco filter in it and run 12.42 @ 106. He put on an S&B intake but then we didn't have much time to get runs in after that. He did trap high 107mph after though. IMO until you are over 500rwhp it's not needed.
 

Killerbee

Got Honey?
Exactly, your LBZ has a variable turbo which doesn't have or need a wastegate. With EFI Live the turbo can be completely tuned to act how you want - even as an engine brake for your tow tunes.

I know this is the prevalent mindset, but I have learned enough about the VGT integration to disagree. IMO, unless the programming takes on the task of a wastegate, then a wastegate is warranted and an important part of a turbo.

Reduced to it's lowest common denominator, the wastegate places a hard cieling on induction (compressor) heat manufacture (not simple a boost limiter). Without it, the VGT can run outside intended map areas when environmental of physical parameters exceed normal expected. For example, say you have a big restriction in the intake, a big bird, or a collapsed element. A wastegated turbo will never exceed map borders, while a VGT, with it's closed loop boost control, will sping harder and faster to try and compensate, eventually destroying itself without us knowing.

FWIW.
 

othrgrl

Diesel Addiction Owner
Mar 10, 2008
2,151
4
38
Wilmington NC
www.mydieseladdiction.com
I know this is the prevalent mindset, but I have learned enough about the VGT integration to disagree. IMO, unless the programming takes on the task of a wastegate, then a wastegate is warranted and an important part of a turbo.

Reduced to it's lowest common denominator, the wastegate places a hard cieling on induction (compressor) heat manufacture (not simple a boost limiter). Without it, the VGT can run outside intended map areas when environmental of physical parameters exceed normal expected. For example, say you have a big restriction in the intake, a big bird, or a collapsed element. A wastegated turbo will never exceed map borders, while a VGT, with it's closed loop boost control, will sping harder and faster to try and compensate, eventually destroying itself without us knowing.

FWIW.


While I see your point, the poster was asking about a bolt on part that doesn't fit his truck. Installing a waste gate on a VVT is not for your average guy and is typically not needed. You could install one off the EGR port fairly easily, but it sure wouldn't be bolt on.