89 would be fine. 91 is a waste on a Ram unless you have major mods.

 

Considering myself properly schooled. Think I'll be changing back to paper. Thanks, dusty48 and nv290.

 

As an aside, I ran a K&N filter on my carbureted ATV for one year. I found that the lower induction resistance gave me a significant bog at off idle. I didn't notice it at first, nor after removing the K&N filter, cleaning and re-oiling. It took me a while to understand this. After someone else noticed black soot coming out the exhaust I became convinced that a freshly oiled filter actually increased the induction resistance, offering the engine a richer mixture. As the motor ran it slowly sucked the oil away, eventually giving me a leaner mixture and heavy hesitation.


When I went back to the factory filter all ill effects disappeared, including the occasional backfire.


Best regards,
Dusty


2014 Ram Big Horn 1500 Quad Cab 2WD, 5.7 Hemi, 8HP70, 3.92 LSD, factory dual exhaust, 20” wheels. Now at: 004200 miles.