E67 Airflow/Boost Limits - CTS-V??
I am tuning a CTS-V with a 2.55 upper, 9.0 Lower, intake and it makes about 17psi and it seems that no matter what I am hitting a brick wall around 3900-4100rpm (205-208KPA). I have tried maxing out all airflow tables, boost limit tables based on MAP, temperature, etc.
Anyone run into this? Unless I am missing a table somewhere as this is the highest boost E67 I have done to date...
Paul Meister
EFI Calibrator/Managing Member, Torq Speedlab, LLC
Specializing in late model Ford, GM and Dodge EFI Calibrations
SCT, EFI Live, HP Tuners, FAST, BS3 and much much more
Boost duty cycle goes to 0 when it happens. It is 100 during the beginning of the run
Paul Meister
EFI Calibrator/Managing Member, Torq Speedlab, LLC
Specializing in late model Ford, GM and Dodge EFI Calibrations
SCT, EFI Live, HP Tuners, FAST, BS3 and much much more
Paul, could you post a log of it happening?
'12 Caprice PPV 6.0 L77 - daily transportation
8.7 @ 84 (1/8 mile) bolt-ons
'02 Silverado RCSB 5.3 L59 - regularly street driven
8.2 @ 86 (1/8 mile) stock cam and spray
8.6 @ 84 (1/8 mile) cam and heads no spray
Our YOUTUBE CHANNEL featuring the Silverado
boost cut.efi
Take a look at this file.
Paul Meister
EFI Calibrator/Managing Member, Torq Speedlab, LLC
Specializing in late model Ford, GM and Dodge EFI Calibrations
SCT, EFI Live, HP Tuners, FAST, BS3 and much much more
As a quick and dirty test I lowered MAP scalar's and I can pull well to 5k and it cuts at 200kpa. Doing that got me 1000rpm more. Is there like a 206+ max MAP somewhere we are not seeing
Last edited by Meister; June 16th, 2012 at 07:30 AM.
Paul Meister
EFI Calibrator/Managing Member, Torq Speedlab, LLC
Specializing in late model Ford, GM and Dodge EFI Calibrations
SCT, EFI Live, HP Tuners, FAST, BS3 and much much more
I can mechanically bypass the solenoid and its fine.
Paul Meister
EFI Calibrator/Managing Member, Torq Speedlab, LLC
Specializing in late model Ford, GM and Dodge EFI Calibrations
SCT, EFI Live, HP Tuners, FAST, BS3 and much much more
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