Currently, running a 2.5 bar OS on an E67 427 twin turbo CTS-V and want to run more than the 22.5 psi limit of the 2.5 bar OS. Thinking of switching back to the stock OS which should be able to read more boost pressure. How accurate is the fueling on the stock OS running between 20-30 psi?
Last edited by 01SLPSSM6; 09-16-2020 at 12:53 PM.
2000 WS6 Trans Am LS3, Tick Performance Stage 2 cam, ARH 1 7/8" Headers, FLT Level 6 4L60e, Circle D 5c Launching on a 200K 10 Bolt
2001 Camaro SS M6 Black on Black
Per the gmve you can run 315 kpa(about 31psi) using hptuners and the preset tables. Accuracy of the ve table isnt so much an issue as injector scaling.
Michael Bray
Rusty Knuckle Garage
Slidell, Louisiana
20yr Master Tech.
Advanced Level Specialist
Custom Car Fabrication, Customization, High Performance.
GM World Class Technician
Shop Owner
Thanks for the input Michael.
2000 WS6 Trans Am LS3, Tick Performance Stage 2 cam, ARH 1 7/8" Headers, FLT Level 6 4L60e, Circle D 5c Launching on a 200K 10 Bolt
2001 Camaro SS M6 Black on Black
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