I know that AFR should be around 14.7 during the idle, but my zeitronix have been reading 14.7~15.6 during idling... It stays mostly above 15 than below 15. It kind of bothers me... Is this OK or what? Car runs fine, but is this some kind of a sign of engine wear that I should take notice of?

I'm wondering whether the O2 sensor is too dirty from running rich...
My car runs rich when it's under the boost (11.5~10 AFR), b/c I have no place to get the unichip tuned. Is it OK to use brake cleaner to clean the O2 sensor?

Thanks in advance,

Jay

 

Mine reads the same way... I put more into what I am pushing during boost than idle and it looks good in boost.... What does yours read when you are cruising at 80 around 3k rpms?

 

Sharif told me a while back that that idle is fine.

 

When I'm crusing it's perfect at 14.2~14.7. During boost, AFR looks good too...
I've noticed that during idle my engine bogs down and RPM bounces around when the AFR is in 15.6+. I don't get it... I should just raise the idle because I've noticed that if A/C is on, RPM rises and AFR stays perfect at 14.7~14.8....

 

yeah, that almost sounds normal... my idle does the same thing with that added annoying noise from the vortech blower... I need to get my idle raised to 850 as well.

 

I have Zeintronix too. Your iA/F at idle is fine. Bump it up to 750 and that'll probably help with the rattling 14lb flywheel too.

 

+1

 

Haha~ I see that you got JWT flywheel as well. My JWT flywheel starts to rattle after driving for a while. Good to know...

 

+1 normal