I am wondering if anyone has ECU upgrade from stillen? i can't find any info on it and i did call stillen and they said that the one they manufacture now is thru hyper tech. But i have Stillen ECU upgrade bought from dealership in 2007. so if anyone has any info on it in regards of what it did and hp gains?
thanks

 

never heard of stillen ECU upgrade before. hypertech sucks tho

 

way to throw ur money away..get a real dyno tune with a good software like uprev or something..