I'm going to swap out my iridium NGK's for a set of Denso's, and my truck never loaded up or fowled plugs when I had my previous set of TR8IX's in, so I was thinking on going with the IT-24's.

My mods are in the sig. Any reason to believe I shouldn't use the IT-24's?

 

We have the same mods, other than I have a 4# and LT's. I have had the 22's in for a while now with no problems. I think Rob_02 had 22's with a 6#, Port, & nitrous. I'd say stick with the 22's The hotter the better.

 

Both would work but the 24's may be too cool during warm up or in cool weather. The 22's would burn the A/F more efficiently and thus result in lower emissions.

TB

 

Don't forget, I live in Miami, so it's cold here only a few times throughout the year. Also, the TR8IX's were fine, and I was under the impression the IT24's are the same heat range. There is no emissions testing here.

 

I live in AZ with more mods and run the IT22s.