Just Looking for help from more knowledgeable people on here,
Just got my zetec turbo capri back from mapping,
And its shit it makes 315bhp but at 6900 and 14psi and's gutless low down
spec is st170 engine JE pistons arrow rods, 9;1 compression(suspect may be less) custom inlet (homemade)
homemade tubular exhaust manifold
Garrett GT2871R with a TiAL vband .63 housing

would fitting smaller turbine housing or shorter exhaust manifold shift spool and power lower down the Rev range,
Or any other suggestions would be great