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Age08
June 18th, 2019, 01:32 PM
2003 LS1B 0411 COS3 loss of Timing when under boost
running SD, set burst knock to zero,
Any Idea's?
Car is 03 Vette Auto, with LS1 with Ls6 heads and middle cam, with a Vortech supercharger,

22888 22889

22907

joecar
June 18th, 2019, 02:14 PM
I'll take a look when I get home in a few dats.

What does the boost timing table look like...?

Are you getting any DTC's...?

Is your tune scaled for either IFR or MAF...?

Age08
June 18th, 2019, 03:15 PM
it has a couple degrees boost retard setup to just be on the safe side,
no DTC
it is setup as SD, no MAF, with 60lb/hr injectors with factory non reference fuel pressure regulator,

Age08
June 19th, 2019, 11:18 PM
When you exceed the ETC max airflow does the computer pull out timing before it goes into limp mode?

Age08
June 21st, 2019, 01:50 PM
Found the problems BTM (B0401/B0402) was kicking in when going under boost and pulling timing and same with B6611/B6614
Now it holds timing under boost.22900

22908

joecar
June 25th, 2019, 04:05 PM
Ok, I'm looking at your ctz file (saved in new format)... can you post a log when timing is reduced...

Age08
June 26th, 2019, 04:07 AM
posted log file in first post, also posted log file after making changes on post 5