Originally Posted by VaGntlmn

I'm not going to say stay away, but please make sure that you consider your options.
PTuning has installed all the bolt ons on my Z. They're expensive (I think), but they do good work.
When I wanted to get my Z dyno tuned, I did talk to them about it.
They didn't impress me. They haven't done any Z's; they don't do uprev.
(and note that I asked them that and look at their answer on the previous page).
I understand that you want to save money, but I'm not sure about this offset.