Supercharger Starting/Idle problem

Originally Posted by hyunsoo1803

The car now has 70,000KM and that Stillen Sc kit may be stressing the engine with old spark plugs. My car is going to for a tune check up sometime this week.

I have some questions for experts in this community

1. Spark Plugs: What system, or brand do you guys use for FI application? Anything one step colder than OEM ones?

2. What's the a/f ratio range when the idle is unstable. For me, it was 13.5-15.2 surging up and down while RPM needle struggled to keep the car running. When stable idle, it usually sits at 14.4-14.7

3. Do you think SRM affects the idle RPM speed? I remember my tuner saying he set the RPM to 800 to 850 ish but I sometimes see stable 700-750 :/

VERY CONFUSED