I' building a Ford Sierra/Sapphire Rs Cosworth 2wd project.
I have made a lot of peripheral mods and now is the time to select between 2 almost same turbos GT3076.63 and GT3076.82
As you see the only difference is exhaust housing, I want to reach maximum bhp from this turbo (525Hp) and to have a wide range of power band.
I believe that .63 will give me HP sooner than 0.82 and at higher rpms I'll have to lower boost to maintain maximum HP.
What is your opinion?
Has anyone a turbo like .63 or .82 dyno graph to reply (with specs if possible to see what do I have to expect)