Hello I have a 04 evo very little mods just evo 9 turbo, tomei cam gears, spark tech COP, exhaust, o2 housing, tune on 25psi. I just have a question about some cams I picked up used didn't do much research on my side first witch was a little dumb but anyways they are bc 272/280 combo. I'm just curious if there worth puting in and will they be okay with stock top end (valve springs&retainers) also would I need to get a re-tune. Thanks in advance

 

Worth putting in? I personally wouldn't, read up, there are quite a few threads where folks are disappointed with the BC Cams. There are much better cams out there (GSC, Kelford, etc.) Be okay with stock top end? I'd probably say not, probably would recommend springs at least, but see what the manufacturer recommends. Would you need a re-tune? Yes