so mine's running as of last thursday - the no-spark was a computer issue, got the tune fixed & it fired right up. HOLY CRAP!!! the 5.3 (even as stock as it is) is so much better than the v6! i really have a hard time keeping my foot out of 2nd gear.

some quick questions, though...

what would cause the message center to keep flashing the red battery picture? it'll be on a few seconds then off a few seconds over & over. i have a new battery & the alternator tested fine.

also, the idle is acting a little funky. when i start it, it jumps to about 1900 then settles to about 700-800 (tune is set to 700). after a little bit, though, it'll slowly drop to around 500 & occasionally dip to 475-450-ish when it's in neutral or with the clutch in.

another thing is do the V6 & V8 use the same VSS? or is the tachometer calibration different? the reason i ask is because the speedometer seems to sometimes be mathematically off a bit from the tach - for example: around town, it seems to be fine, but on the interstate, i was showing 2000rpm and 61-62mph. with my 265/75-16 tires, 3.73 gears, and .73 OD i should be doing 69mph at 2000rpm. i'll have to check to see if the odometer is accurate next time i go to work. i called the tuner & he looked up my tune & said the tire size & diff gears were set correctly. any ideas?