Originally Posted by Concentric190
Went to a-spec yesterday but we couldn't find a rpm signal to go off of. I really wanted to see the TQ numbers from this tune (can't get that without rpm signal) so I chose not to do it and find a dyno that could pick it up or figure out a way to get the signal.
Sorry it didn't workout. If you don't mind driving out to St. Charles, I highly recommend taking it to Dean's Performance.
He's dyno'd a ton of E46 M3s from ChiTownM and an E90 M3 for VS Motorsports.
You should be able to tap into the RPM reading from the DME. If I have time, I can try to take a pic of which wire it is. I'm pretty sure it's black or purple though