Does anyone can give me feedback on fully programmable ECU ? I'm looking to put one into a race car and I have these on the market: Motec M4, Apex Power FC, HKS F-CON or AEM.

My application is for racing only and I would like feedback from people who have use these systems.

Thanks

Bob

 

Do you have an N/A engine ? If so what is the gain over the stock ECU ? And can you switch from different mapping while you drive by a switch ?