Car was previously tuned, has BTR stage3 cam 34% fuel lobe, LT4 injectors/pump but is dooky at WOT (410hp 410 ft lbs 11.7:1 air fuel) First headache was figuring out some spacer plate was used (less than 1mm) on the NW TB and MSD Atomic combo with a hole too small and the blade was hitting it putting into REP. Then it was throttle shutting up top, got it bit better with changes from run4 to run5 but still seems real wonky.
Knock sensors going wild (not like it has much timing in it) hi pressure rail is on target and doesnt have wide inj pulsewidths (3.2ms?) so I wouldnt think its SOI backing it up into spark area and pulling timing away from it. Not seeing why the throttle stays open for much longer but it made LESS power up top (timing some but why) and showed rando misfire flashing that run
Ive ran into a few cars that acted like this... and couple times figure out the thing has 87 octane in it. Starting to think that may be the case its a SS with ZL1 everything on it outside and tons of carbon fiber and it always seems to be those types that will spend thousands on appearing to be $$$ and letting a dime hold up a dollar being a cheap ass in the worst place