I had Kurgan burn a chip for me in March without using a dyno and I have had good luck with it. He didn't want me to leave until I was happy with the tune. I drove around for 10 min or so before I left the facility. He seems to know his stuff and is well known around the Rockford, IL area for Mustang tuning.
1994 Mustang GT Convertible. - YMR# 8045
Moates QH & BE/EA, J4J1/CBAZA, LC-1, 306, GT40s, TFS1, SVO Intake, #24s, MAC headers/catback, Bassani X, MM CC plates+springs+SFCs+LCAs, K&N, KYB shocks+struts+quads, MGW shifter, tires:245 F/275 R, 3.55 gears, FRPP Alum DS, Centerforce DF