Hello,
All the remaps are the same price, Our spec1 remaps have been worked on over the years to make them even better. The gen2 and 3 remap are still outstanding.
We are now on gen4 which was produced from the gen3 using 3 cars during the summer months with over 40 hours of dyno time gone in to the fine tuning. The idea with the gen update maps is not no make any more peak power or boost vs a std spec1, but to bet the car up to peak power faster and smoother and giving a strong linear pull up to the red line, giving more area under the curve on the dyno plot. You really need to test drive a car with a gen 4 remap to full under stand how the power delivery works
Simon a Ecotech can offer the gen3 remap for the same price but branded as an ecotech remap without the back up and support from us. They cannot offer the gen4 remap as this is 100% unique to us.