This is why I love this site! Everyone here gives straight forward answers. I should have given more info on the engine in my earlier post. Here is what the engine is: .060" over 258 block, the cam is a Comp High Energy 260H, 4.0L head, header, and 2.5" exhaust.


The dist in locked out and the ECM is controlling spark. I can use either Tinercat or Tunerpro RT to disable closed loop, but what exactly do I do? Do I set "Rpm above which open loop idle is forced off" on Tunerpro to say a lower value than the 1000 that it is currently set?

It also dawned on me that is it possible for the CTS to be malfunctioning and seeing a greater temp than is really there. I can verify that with WINALDL next time I hook to the Eagle.

I will follow your links now and check out the fuel table. Thanks for the advice!