i have an 07 6.0 with 41,000 mi. The other day i was driving on the freeway and my ECT spike to about 230 degrees, i turned the A/C off and it went back down to about 200 shortly there after. Last night i was looking for a parking spot and the ECT spiked to 230 then climbed to about 242, and about 2 mins later went down to about 200. any ideas? i wasnt romping on it.
im running the x3 with innovatives xtreme street tune (with insight), banks innercooler with power elbow, 5" straight pipe (no cat
or muff), and an AFE stage 2 intake. im on 38's too.