I have a 2014 gmc sierra with built 5.3 and btr stage 1 cam. The car struggles to startup but when i blip the throttle when the car surges it idles fine. Please if someone can help it will be appreciated.
Having trouble with startup!
I have a 2014 gmc sierra with built 5.3 and btr stage 1 cam. The car struggles to startup but when i blip the throttle when the car surges it idles fine. Please if someone can help it will be appreciated.
2003 Tahoe 5.3L turbo PTE 7675 604rwhp on 14.7 psi
2011 Silverado 416ci turbo 9 psi 629rwhp
2006 Cadillac cts-v lingenfelter 427ci 630hp package
2010 Silverado LSx 427 with maggy 650 awhp
First increase startup spark advance to 8-10 degrees in the cells your engine starts at and surrounding cells.
Increase the startup airflow by 3 g/s as a start, then by 1 g/s untill it starts well.
If it still starts weakly it might be faulty injectors due to installation.
The idle surge I can't say anything about it without a tune posted. There are many factors that contribute to idle stability.
First start with optimizing your airflow tables( maf & vve ).
Originally Posted by ahmedabri97
The car is gen v which uses torque instead of airflow!
2003 Tahoe 5.3L turbo PTE 7675 604rwhp on 14.7 psi
2011 Silverado 416ci turbo 9 psi 629rwhp
2006 Cadillac cts-v lingenfelter 427ci 630hp package
2010 Silverado LSx 427 with maggy 650 awhp
Post the file
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
Gen V also has a startup airflow table.
Found under engine, airflow tab.
The idle part is controlled by torque.
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