85 with 87 Ecu

[Tampa T-Type]

The two nipple Wastegate Acu on my 85 requires Boost pressure to activate the rod. I want to change this to a vacuum type like the 87's any feedback would be helpfull. The mounting bracket seems to be unique to the 85.

 

[Turbo Riviera]

'87 wastegate is boost actuated too...

If you want the '85 to act like an '87 just leave the pass side vaccuum port disconnected and cap the existing line going to it, but don't cap it on the 'gate.