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Discussion Starter · #1 ·
Hi guys,

I am trying to diagnose an issue as to why my car is running rich and has rough idle.
The car has no hesitation, it does backfire, runs very rich, lack power and poor emissions.

Car mods,
DP no cats, hks super drager exuast, FMIC, BCC.

Going by the service manual checklist and the first item is already off
Faulty ignitions:
Incorrect timing(10 +- 2 BTDC @ idle) - the car is running (4-5 BTDC @ idle)
The physical timing is correct all the marks line up, the question is what causes the timing to be off? And how can it be adjusted back to 10?
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