No it is not bad for your car at all, and the base map that comes with it would be perfect for you especially once you upgrade with a few more mods. If you get a wideband, you can take out a little fuel if it runs too rich since the base map is made for a couple more mods than you have.

Other than that, it will be perfect for you and you can fix a lot of annoyances that come along with running the stock computer.

 

Ok one last question to some this thread up.... which is better for my car stock pfc, or the rx7store tuned pfc for my mods? thats all thx-eric