Vehicle specs - 2005 Silverado 1500 RCLB 4800 lbs race weight 6.0/4l80/4.56 rear 4000 ish stall converter 305/50/20 (32" tire)
Engine has 317 CNC ported heads, LQ9 flat tops 228/232 .635/.635 cam, TBSS intake 90mm TB 1 7/8 headers
All my bench racing experience says that this engine should make 500ish hp, but ET/mph says it's making 375-400 hp. Was thinking it would be a full half second faster than it is - this is the best out of three runs - no spinning off line - foot brake to 3200-3400 rpm other two runs were 13.3 nearly identical
60 1.95
330 5.489
660 8.432
660 mph 83.52
1000 10.967
1320 13.142
1320 mph 103.28
I got in a bind last year when I was putting truck together and paid a dude to help me with tune - so a lot of the engine setup was done by him, but I ended up getting set up to do it myself after he left the 4l60 stuff in the ECU and my transmission burnt up, so this is my first attempt at tuning a factory GM ECU.
Question is, what am I missing? Tune and 13.1 run from Darlington attached. Of note I have the dual channel Zeitronix wb O2 sensors and A/F data from them should be in there.
Thanks,
Ryan