Originally Posted by A Black Z34

Got dyno’d today. I wanted a baseline before I start doing serious mods. I currently have drop ins and an axelback, so it’s relatively stock. I was spot on with my prediction of 290 though!

Any one have an idea why I was getting a dip in power around 55-6500 RPM? It was different for each pull too. I am waiting to hear back from the shops tuner to see what he says but figure I’d ask y’all as well.