Hi guys looking for a bit of info. just replaced exhaust system for a cobra turbo back with sports cat. it's got sti top mount. was looking at getting it mapped with the exhaust change. the mechanic I use said he knows a place that is good with these. I asked if it's done on rolling road which it is but can't give print outs of power run. he said he uses evolution mapping. can anyone tell me what this is and is it any good.
Thanks