Well I have to make a budget decision, send to ported the head or change the cams..., my cams are the HKS 272 mivec, that I changed in 2006 when I bought my car, in that time I really had not many oher options, but today I thinking make an upgrade of them.

But I have to make a decision, or ported the head or change the HKS for the GSC S2 with upgrade retainers and springs... I was searching, and this two option maybe give me 25hp more, but I dont really sure. And for the other side, ported the head and upgrade it, cost me $1800 and if I only change the cams, springs and retainers $800 and I only want to make one change and I dont have more money right now.

What do you think? ported the head and use the HKS 272s or change the HKS for the GSC S2?

Thanks in advanve, for your comments!

 

GSC got my vote.

 

ported head and the GSC's!

or get a good valve job, valves, spring kit and the GSC's..good budget build there.

Problem is your in Ecuador..so the best bang for your buck is probably just going with the cam and spring kit. As it will probably cost about $500 in shipping to do anything with the head. Either way, GSC cam would be the way to go in your cam choices.