Spark plugs
#4
I drove ttrank's car solo
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G35 sedan w/ too much money in mods
#10
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Gary
Last edited by gary c; 04-22-2017 at 09:59 PM.
#12
Yes, the NGK are better. I've had both the Bosch and NGK and there is a noticeable difference. I also prefer the Laser Platinum NGK vs the Iridium. Reason being is that the Iridium gives you a false confidence in longevity - they do NOT last 105k miles. Not with decent performance anyway. Change the Laser Platinum NGKs every 40k miles at you'll always be running at peak performance.
#13
#15
Clean your throttle body, and MAF. Should fix your idling problems. Change your PCV valve too. It's probably never been changed.
Also, check for cracks in the rubber coupler between the intake tube and throttle body. Cracks in that coupler (or anywhere after the MAF) can pull in unmetered air and cause idling issues.
Also, check for cracks in the rubber coupler between the intake tube and throttle body. Cracks in that coupler (or anywhere after the MAF) can pull in unmetered air and cause idling issues.