I know I've seen a graph that was similiar in appearance, but can't find it. I was wondering if anyone knows the possible reason for the graph not being smooth. My mods are FS race header, Magnaflow cat back, Iceman, and Unorthodox UDP.
I don't think that's what it is. I think it might be his spark plugs? I dunno but something's definately funny there. Here's an overlay I did of my dyno and Ben's dyno. We both did them on the same day, on the same dyno. I have comperable mods minus the race header and exhaust.
Where did the shop connect the inductive spark lead to sense your engines RPM? Choppiness like that could be a result of poor ignition pickup for the dyno, maybe there wasn't a good clean ground or possibly their could be a problem with your plug wires.