about two years ago, i never weant into all this tech jargon, basically measured up a size designed the to fit used the newr type cores the guy who made them advised me on and we tested them back to back against the HKS units and GREDDY and they were mopre efficient lol. the bottom line is a side mount intercooler is not some huge technologicle feat lol. they alld o roughly the same job end of story,