i have a 93 wrx jap import, could anybody tell me how do you increase the boost or is it a garage job, and what is safe to run? its running .8 bar at the moment.
cheers, shawn r

 

You can get yourself a boost controller, electronic or manual such as Dawes. If you are reasonably handy with tools, then fitting a Dawes is easy, just a screw driver job mostly.

You will need to get a boost gauge to monitor, but then again, if you know you are running 0.8 bar, then you already have one???

Provided you use Optimax with good octain booster,you should safely raise the boost to at least 1.1, no problem. Maybe higher, but don't quote me on that

As it happens, I have a Dawes for sale. If you are interested, contact me at keigokato@hotmail.com

 

Before you raise the boost Fit a knocklink first to show for any DET An uprated fuel pump and Adjustable Regulator should be next on your list as the standard pump and regulator can barely cope with high boost 4th and 5th gear situations Once you fit these 3 items then buy a Dawes device
Slowly turn the boost up keeping an eye on the Knocklink

Cheers Grant

 

cheers to both.
how hard is it to fit a knock link and what is its purpose?

cheers, shawn r

 

Look HERE about half way down the page

Cheers