Denso Iridium TT (Twin-Tipped) Spark Plugs
07-15-15, 01:53 PM
#16
was thinking of using this (IKBH20TT gap 0.040) to replace the OEM (FK20HBR11 gap 0.044) for my 2013 lexus gs since they are cheaper by 60% but I am worried about the gap difference.
I have heard that it is very risky to gap iridium plugs so I am wondering if the difference of 0.004 will have a tangible difference on the engine?
update: nvm i called sparkplugs.com and a pro there told me not to worry. a difference of 0.004 inches make no perceptible difference in the car. Most problems arise from the gap being too wide instead of too narrow.
I have heard that it is very risky to gap iridium plugs so I am wondering if the difference of 0.004 will have a tangible difference on the engine?
update: nvm i called sparkplugs.com and a pro there told me not to worry. a difference of 0.004 inches make no perceptible difference in the car. Most problems arise from the gap being too wide instead of too narrow.
Last edited by Cathy; 07-15-15 at 03:03 PM.
02-21-17, 01:49 PM
#20
Racer
07-24-17, 05:42 AM
#21
Lexus Test Driver
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