When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
There will be a white bar code sticker on the front of your pcm that will say something like " dealer authorized reprogram" or something like that. You have to get a Hypertech orSuperchips programmer or get your pcm custom reflashed to get rid of it. The programmers will not totally eliminate it but they make a big difference (at least it did on mine)
You will have more power and possibly gain more MPGs as well, but you will ping (sometimes even with higher octane fuel) if you don't fix the plenum gasket first.
2001s don't necessarily have the "authorized software update" or "reflash" sticker, as they came from the factory with the death flash, IIRC.
Was this plenum issue more common on the 318 or 360? My 98 has no sticker and runs as quiet as a new engine at 128k miles. I get 15-18 mpg, depending on how hard I drive it-16 mpg overall. I have the 318. Is this across the board or hit-and-miss?