Just thought I would post an odd question. On my 89 XJ 4.0 AW4, I notice that when I push it and it gets above 2500 rpm, there is noticeable imporvement in acceleration. It kind of reminds me - on a much lesser scale - of the powerband on dirt bikes. Is this a feature of increased torque or more HP at that RPM range? Does anybody have a graph showing teh horsepower at various rpm's on this engine?
Thanks
BSD
Thanks
BSD