Quote:
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 |
Plugs one step colder,GTR plugs work well
AFR should be 14.3-14.9 thats what mine is
Idle speed on mine is 800 b/c it is a 6sp
The idle surging up and down is b/c your tuner must tune the MAF @ idle instead of using the fuel comp table.