Originally Posted by
Huskydog78
Thanks for reply guys.
Long story here. Was using a reputable master tuner initially who turned out some good numbers but they couldn't resolve the bucking.
Next dyno workshop were confident they could sort it but still same problem, low load light/trailing throttle bucking. They suggested it was common for the 2016s with manual trans to do it.
@JaegerWrenching it doesnt sound at all of compressor surge when its bucking, and no boost peaks evident in logs or watching gauge. Tacho needle jumps around a lot though. MAF generally always looks a little lumpy but i have nothing to compare to. Exhaust note at the tailpipe at idle has a weird hiss to it that i always thought a bit odd. Intake is low restriction with big airbox inlet and oiled foam filter.
@Aus_spec_ranger yeah i can send you the hpt file for comparison. Its cost a bloody fortune to get this far so if it can be of any help to anyone then great!
Cheers