My FI cars (supercharged Stang GT / SR20DET S13) were always dyno tuned. I feel comfortable with the mail in tunes. I do not really have a choice anyway.... I am not going to SRD in AZ and trusting them with my Z. That is a Honda shop and they have messed up several Nissans that I have seen in person. WOW.
Chris, I think you hit it; you may not get it right the first time, so it could take several tweaks. If I did have a reputable Uprev tuner in AZ, I would be all over it...
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