Hi guys;
Those of you that like to tinker with diy... have a look at this.
http://www.charm.net/~mchaney/homedyno/dynokit.htm
You may have a better idea to make it run cheaper on you own effort.
You can also do...
when you install a VTA External wastegate, do you experience boost creeps ??? as in boost increases as the revs go higher...
Do u need a boost controller to eliminate this...