Piggyback ecu?

[var1ant]

Are there any companies that make a tuneable ecu unit for our cars? I mean theres chips and all but I want a little more customazation, such as a computer interface (I have a laptop). Also could you use a chip with a piggyback?

[Jordan]

SMT6

[var1ant]

Any others? good ones, bad ones?

[Jordan]

Is your engine even modded?

[var1ant]

I'm just trying to think ahead.