I have a 89 rex Si with a ZC and are trying to pick up a td04 and use a hf manifold to piece together a set up. Looking for someone with similar set up to ask a couple of questions..

 

Im currently doing the same type of project myself. I'm using a T-05 out of a Starion with the CRX HF mainfold set up. The turbo is still on the work bench. I've still got to make the adapeter plate to connect it to the manifold. I'm only going to run 6-8 lbs of boost. Anymore than that, you can throw a rod if your using stock parts with your ZC.

 

I have a greddy kit that will fit your ZC if your looking for one, the price is flexable and in good condition. Click on my name and go to my post "90% complete greddy kit" thanks

 

so do i'm using tdo5h from laser 90 to my zc dohc 90 crx. I'm boosting 9.5 psi in stock engine and stock injectors.the boost start around 2800 on full boost 3700 wont stop until i let go the gas pedal. I dont have ecu problem and runs great. by the way stock ecu teg 89. with fuel preasure set up to 42 psi idle.