300zx: T28 upgrades 740cc - Pump Gas Dyno Tune
 

This 300zx belongs to Tim from Union. He brought it in to us sometime back for a few upgrades, including T28 turbos, 740cc Nismo injectors, Z1 dual intakes, and a Walbro in tank pump. His car is on a conservative tune on a Nistune board.

Attachment 20557

This is the dyno chart for the boost controller OFF and on the low boost setting. Boost controller off make 10 psi, and the low setting is 14 psi.

Attachment 20558

The high boost setting numbers were not posted by the customers request.

http://i672.photobucket.com/albums/v...h_SANY0017.jpg


Regarding the "waves" at the top end of the chart. It's really quite simple and common with these setups, it's a combination of 2 wastegates and a boost controller trying to regulate boost and thus boost varies by 1-1.8psi.