2008 Pontiac G8 Starting Issues After 2 Bar OS Update

[teamterrellowens]

Vehicle has ran fine for the past few years. Broke a key and the immobilizer came on. Friend turned off VATS system, but said he did update to the 2 BAR Os. Nothing was changed except that and the VATS 1 and 2 Disabled and the Starter. Everything has been reverted back since.

Mods are TSP Stage 1 N/A LS3 225/236, .629/.615, 114
Long Tubes
CAI
Catless

g8.hpt

Here is the current tune. Just seeing where we need to start to get it to stay running. Thanks!

[gtstorey]

I think the 2 bar update replaces your VE tables with nominal values (along with other values). Are you saying you have gone through and matched up your values in your original tune into the new tune?

[teamterrellowens]

Nothing was messed with except the update besides the VATs what was put back to enabled. Unfortunately I don’t have a saved tune from an earlier version except a stock tune which does keep it running, but sounds terrible.

[gtstorey]

So, You are starting from scratch. Someone more experienced will have to get you started or you will have to start reading and learning.

[Alvin]

When you do that OS upgrade the VE tables they provide you are filled with zeros. You need to fill in this table. VE normal IMRC Open is the table that matters.

[teamterrellowens]

Thanks for the responses. Yea noticed the new VE tables are set at 0.

[JasonHSV]

You will also need need to change the map sensor linear & offset characteristics values under the Airflow General tab. Change them to the stock file values unless you have swapped the stock map sensor to a two bar sensor.