Its a royal pain in the ass to do it yourself. Unless you are comfortable finding the wires, and soldering the connections, id leave it up to the pros....BUT....if you go to Greddy.com and click on the heading titled "technical"....you can download the instructions in PDF format.

I have the greddy as well, but after looking at what it takes to install it and not having any shops around here that I trust to do it, I am gonna sell it and get the HKS as HKS makes a veh spec harness to make it PnP.

 

i hate to say it but you really dont need the tt the turbo is self cooled i would sell it and get another power part

 

your right but alwayz just cool to have

 

I installed the hks turbo timer on my 07 subie. took a while but i figured it out. make sure you buy the turbo timer harness. its plug and play. let me know if you need help

 

hello,i have a 2005 subaru wrx, not sti, i have a hks turbo timer with loose wires, no connector, how can i install it,i looked at website and instructions are confusing, should i try to get a connector from them and a harness and if possible to get is it just plug and play, or do i still have to run speed sensor wire and ecu wire and go thru fire wall etc as instructions on website for hks suggest. obviously i am a little confused but this can't be that hard. or can i just splice it in to wires somewhere under steering column?and what does ECU stand for,electronic control unit? and where is it located?

 

I believe the HKS harness will work with the GReddy tt . I intsalled it myself on my 02 . Pretty simple . Only pain was the wire to the E brake . No harness either .

 

hks harness works with almost any turbo timer but one i think. That's the blitz turbo timer. They have their own harness for thier timers.

 

So would i need a turbo timer for my stock 05 WRX?

 

A turbo timer on a WRX is pointless UNLESS you have installed a turbo that is oil cooled only. A June 2001 TechTIPS published by Subaru for Subaru Technicians states:

"2002MY WRX TURBO COOL DOWN PROCEDURE
FHI's position regarding this is that it is not necessary to perform a "cool down/idling" procedure, as was recommended with past turbo models. Our current 2.0L turbo engine has a far greater cooling capacity and, coupled with technology advances, makes this practice no longer necessary. This explains why information about cool down is not included in the 2002MY Impreza Owner's Manual."

 

So my 05 turbo is oil and coolent cooled so a turbo timer is a waste of my money right now until I get a bigger turbo thats oil cooled only?

 

I wouldn't purchase a turbo that is oil cooled only. There are a lot of high horsepower turbos that are both oil and water cooled. Oil cooled turbos are old technology.