I am in the market for an ecu upgrade on my 850 T-5R, and was wondering which chip is considered the best? I know the ipd ecu is considered to be the safest and most conserative upgrade(not to mention the most expensive), but I have seen many other chips from many different companies. Does anyone have any info or opinions on the PES, Watteraur, Eastern Aeropspace, or any other companies' chip(s)? Which one is the most "extreme" which boasts the greatest gains? Also what kind of increase can I expect with my car, it already has a K&N conical filter with a custom air box, 2 turns on the wastegate, and a free flow exhaust. Thanks for reading.