i always liked the chargecooler on my old fez, kept everything cool with no hint of any problems, of course there is always the issue of pump reliability with them. Plus they don't look as balls out as a big front mount, whether that's good or bad is different person to person. I only ran between 16-18 pi at about 230 bhp and mine was spot on , whether it would have been at higher boost levels i dunno. Some people like them some don't , I do