another stupid plug question

[VinPecora]

Does it really matter if I use cr43's or the r43's. Whats the differene, and which one is factory recomended???? Thanks

 

[buickboy]

R453TS is one heat range less than factory (r44TS). CR43TS is the commercial ("C") version with a supposed thicker electrode. Does not matter on performance. Ran both, no difference.
Mitch

 

[VinPecora]

Have only a few bolt on mods, pretty much stock, should I go with the r44's or are the cr43's better??

 

[Two Lane]

I suggest the CR44's.