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- Mon Nov 08, 2010 4:15 am
- Forum: General Motors
- Topic: Spark Advance 0D BYJL confusion
- Replies: 1
- Views: 9700
Spark Advance 0D BYJL confusion
I have a 95 Suburban with a 16197427 computer with BYJL memcal and have been trying to diagnose a stuttering in the engine under loads. I have been datalogging with RT v4 with the OD_V102.xdf and it is showing my spark advance dropping almost to TDC as the engine is under load(High MAP around 2k rpm...