Post by
KATwo40 »
https://forums.nicoclub.com/katwo40-u25350.html
Mon Jul 17, 2006 4:32 pm
Honestly, the turbo just starts gettin' slightly happy around 10psi. The 8psi I've been running on this tired old engine and small injectors is nothin' to sneeze at, but it's not the best operating range for the turbo. I'd say, with the wear on the engine now, it's somewhere around 220whp. On a good engine, it should be more like about 250-260whp.
The built engine, after breaking in on this setup, will be stepped up to 740cc injectors with a track boost level of 20psi + slicks or DR's. That, combined with 2-step launch (8-10psi and 4000rpm limit) should feel much better. Obviously, the daily driven boost will be more modest, around 12psi.