Yea the wiring is the bad part. That's the problem for the tuners...not the actual tuning itself. The mega squirt kind of markets to those who want to DIY. Some people really have no business wiring anything so they think that it "just needs to be tuned" and make a dyno appointment with a mess for an ecu which then makes it a mess for the tuner. If you can go with one of the "assembled" mega squirt deals, it's a little better.