No power below 2000RPM 5.7 xk

[thance]

Test drove yesterday evening and to and from work today (35mi each way) and can't reproduce the issue......

[Matt]

I'd drop the trans pan and replace the filters for good measure. Could have a faulty/damaged filters thats intermittently restricting pressure. And at 65k+ miles, consider it good preventative maintenance regardless.

[thance]

I think its time to replace all my driveline fluids.

Friday was really hot, so that may of played into it.

Also I had an electronic pressure booster on the trans that I removed Sunday. That had been on for months, but maybe the hot weather helped it trigger something. Not sure....

Also removed the diablo tune for good measure.