I bought greddy profec-A. The instruction is in jap So it hard for me to install. Does any one know or done it befor. It well be helpfull to know. Any website to get the instruction fron> I try greddy.com and there was no help for me< I try to install on 89 with redtop sr.

 

this quick guide might help you get started, click here

you might want to dig at google or greddy's site for more detail

 

Hi, I installed one of these it's very simple. There are red and black wires, + and - to a ign power source. The rest of it is just plugged into the soleniod, and then the solenoid goes on the hose between the wastegate and actuator. Then a smaller one goes to a manifold fitting or added "T" for the soleniod to read the boost. Make sure you install the filters on the boost inlet sides(between compressor and solenoid), and in the smaller boost sensor line. it's just a matter of routing the harness thru the firewall and plugging in the boost controller. All it does in short is bleed off the pressure and cheat the wastegate into staying closed longer= more boost. It will produce a few more HP than the simple needle valve BC, because the soleniod keeps the wastegate completely shut until desired boost is reached, and it's adjustable from the inside which is the really cool part. When it's off it's normally open, so it will be at stock boost.