Reply to thread

Message: [QUOTE="Gearhead, post: 457825, member: 503"] Could it simply be that the manifolds are dropping velocity when the combo is under the chargers contributing to a longer spoolup? If the testing shows that the vgt was peaked like that and there was less boost, then it looks like the manifold/up-pipe volume was too large causing a lack of velocity. Once the chargers spool it makes more power because of the added flow. With the VGT closed off, the turbo is the higheset point of restriction, when the vgt is open, the pipes and manifolds can be the culprit until you exceed the capacity of the turbine and/or the exhaust housing. [/QUOTE]

Verification

Random media

IMG_20130406_180211_348

IMAG0203-1

Dropped on 4800lb. coils and no blocks

My truck

DP-Tuner Timing

IMG00156-20100525-1429

Rich_Sig

Bella as puppy

Stock_Fuel

Always changing to make it a home on the road.

Latest posts

Won’t start
- Latest: psduser1
- Wednesday at 11:33 AM
7.3 Tech & FAQ
GT37 Turbocharger w/10 blade turbine, billet comp.
- Latest: hskfab
- Jun 6, 2025
Engine and Drivetrain
Hard steer question/issue
- Latest: psduser1
- Jun 5, 2025
7.3 Tech
B
WTS/WIF light flash and stall issue
- Latest: blickcd
- Jun 5, 2025
6.0 Tech
T
2013+ steering gearbox in older trucks
- Latest: TPOLO
- Jun 4, 2025
Suspension, Drive Train, and Tires

Members online

Patrick Feeley

Total: 277 (members: 1, guests: 276)

Top