Looking for some help with 2009 Suburban LTZ turbo time
2009 suburban LTZ, 76mm Precision turbo, BTR stg 1 truck cam, 80lb injectors, 6l80 with 3500rpm triple disk converter. The problem I am having is. It wont rev or build boost past the 4000-4500 mark and around 12lbs. I have looked and don't think I am missing a limiter. I have attached both a log running MAF only and a log running SD only. It is happening at around the same spot in both. It feels like it is setting on a rev limiter that just wont let it rev anymore. runs fine until that rpm and just wont go pas that piont. Only thing I saw in the tune that might be causing it is the zone and rpm boundries? They are set around that area. I don't have much experience and thought you guys might have some insight on it. Thanks
Not full throttle on them logs. Just rolled into when it breaks up. No codes at all. I have a log with the pedal open but it just goes to 4000-4500 and breaks up and wont go past. I was wondering if it was a torque limit or something around them lines. It seems to happen as soon as I reached the 640 torque limit in the scanner under delivered engine torque. Thanks for taking a look.
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