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I am new to the forum and joined due to Mopar1973man presence in many other forums. With that being said I hope I am posting this in the right place.
I have a 2001 4x4 quad cab short bed auto that I purchased about 2 years ago with 86k on the clock and appeared completely stock with 3.54 gearing. It now has 114k on the clock with an Airdog 100 with .5" fuel lines running 16 psi idle and I have not seen it drop below 14 psi with throttle and also has a K&N CAI. The VP looks to have been replaced sometime before I purchased as it has a reman sticker on it. The issue I am having is low performance. The truck idles great with no smoke. When driving it seems the engine pulls strong until about 2000 rpm then seems to slow in rpm climb and pulling. Max RPM is about 2600 RPM right now. Turbo seems to be spooling great and I don't feel any misses. There are no codes present in the ECM (stored or active). I have cleaned the IAT. I can not find any boost leaks. The stock exhaust seems to have adequate flow. Two local Dodge dealers say ECM and PCM are up to date. I have not been able to get better than 13.2 MPG (hand calculated) cruising I-25 at 65 mph from Denver to Albuquerque. Also I have had the truck emissioned at 2 separate shops and they both stated opacity was far less than most trucks my year which in my mind means the truck is running too clean. I have sought advice from these 2 shops and they say everything checks out good mechanically.
I am out of ideas on improving performance and fuel economy. I have thought about going the tuner route but until I feel the truck is running as it should in stock form stay away from tuners fearing I may cause more damage. I'll also add that I am comparing performance to my 1997 4x4 quad cab long bed auto with 3.54 gearing completely stock with 220k on the clock. I thought the 24V was supposed to be more powerful than the 12V.
Any ideas where I can look?