I am looking to upgrade my h1c that is on my engine. I am running extremly hot exhaust temps (1350 °F) and only 15 psi of boost. I was thinking of upgrading to the 16cm housing and putting a different compressor on my turbo. I checked with HTTurbos.com and they only have the stage III left for the H1C Turbo. Their stage 3 is a 60 cm2 turbine which seems kinda big. Correct me if I am wrong. I have put the aftercooler on my engine hoping that will help. My fuel screw is only about 1 turn up from factory and i think my exhaust temps are a bit high. I would like to do the HY35 upgrade but don't have the firewall space. Please help..