Hi Matt,

The Air injectors require a chip change and mapping in as they are mapped on load Vs RPM which means I can program what your boost does at any RPM. IE: peak at 38 between 4 and 5krpm and hold 30 from 5k onwards for example. Top end boost is very turbo dependant as it can only flow what it can flow and the YB will always ultimately consume more air than a T34 can give at 30psi, but Air Injectors will ensure we can get the best from it.

Aftermarket are exceptional at holding boost as they Are closed loop feedback controllers, however, unless you have one with built in RPM control the inbuilt overboost facilities can be quite dangerous on an engine pushing injector on time hard as a 38psi spike at 6.5k for example would kill a YB on 55lb Siemens, so the rpm control is of paramount importance. The alternative is to just hold a solid figure with no spike at all and this gives a nice linear power delivery and for this, jap controllers are awesome.

Here's one I tuned exactly that way this week.