By Jecs do you mean the standard ECU?
In my situation, the extra smarts of the Jecs doesn't facilitate more power, nor a better driving rally car. In my view, for JECS it's all about the emissions...which I'm not so concerned about.
I'd consider a Motec or Autronic but again, the tuning function is harder. The megasquirts autotune function is pretty impressive. We were able to do a complete installation and tune it on the road in about 2 hours. We went to the dyno and just played around with some settings which only netted a few more HP....the road tune was that good.
Matt
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