Ok guys so I have a handful of things going on and I'm hoping someone can shed some light on a few of them.
The truck is an 05 Chevy Colorado with a 5.3ls swap (lm7 if we wanna be specific) with a 4l80 and a 78/75 turbo. Cam specs are 283/286, .050": 228/230, .585/.585 (sloppy stage 2 as some refer to it), and decapped injectors. E40 ecm (2006 5.3 Trailblazer) and t42 tcm (2008 express van) in order to retain factory gauges and wiring was done by Current performance. Im currently running without o2 sensors or knock sensors, eq ratio monitored by AEM wideband.
Onto my issues.
1) I cant build over 2.5ish lbs of boost.
I have leak tested my cold side and sealed everything up, there are no obvious leaks and the ones that were present were very small.
I have pulled the wastegate off and bench tested it to see that it opens at 14psi but starts to open around 10-12, so that shouldnt be an issue.
I have checked the hot side for obvious leaks and had no luck finding any, if someone has a suggestion on how to check for them under load I'll gladly try it.
2) This may have something to do with issue (1) as well Map sensor PID does not line up with the Map values listed in the graph and chart.
If this picture loads you can see what I'm referring to. The chart reads 116 kpa but the PID wont read above 104kpa. everything below 104 kpa seems to line up ok together. Since this is an E40 I'm under the impression that you use the std map pid since there is no 2bar map option in the scanner.
Attachment 95309
3) Getting TRQUE fuel cut randomly without making any changes.
Randomly I can drive the truck somewhere, shut it off, turn it back on 10-15 minutes later and I get fuel cut with TRQUE displayed in the scanner. I can pull over turn the truck off and back on and it goes away. (will load separate log to show this)
3) No speedometer.
Transmission seems to shift out as it should but I get no speedometer readings on the dash or in the scanner.
If I load the 4l60e tune, The speedometer works without issue.
4) Fuel gauge reading backwards
Fuel gauge on the truck reads the wrong way and also seems to be off a fair bit from what I can tell.
I will be uploading the 2 data logs and my current tune, If anyone can take a look and give me some guidance, I would greatly appreciate it.