I have the Denso Iridium plugs installed in my truck, with the mods in my sig. Denso's website recommends the gap to be .050 (for a stock truck), factory gap for the OEM platinums is .060. Right now, I have them set to .055, for no good reason. The truck runs great, but I was just curious if it would be beneficial to me in any way to go with Denso's spec or if anyone had any other suggestions. Thanks!

 

Are you running stock timing? Does it feel any different with the .060 iridiums? If not go with a .065?

Timing would def. help though..

I run Autolite 764's and theyre gapped @ .055 with 14* and 42 PSI of Fuel N/A. (In the stang it pickedup 20+WHP!!!)

 

Bryan at PCMforLess definitely increased the timing...I'm pretty sure that I remember seeing close to 30* on my AutoXray. It's kinda hard to look while driving around here, everytime I peek at the scanner, I look back up and see brake lights.

 

I gapped my NGK TR55's at .060 and my truck ran like crap.. Gapped them back to .050 and it runs like a charm..