Nice car you friend has got Anil, if I'm not mistaken it is a 1800cc V
Tec? good choice, and it is quick, When he is ready I would like to
have a  Drag with him in the Swift 1300cc DOHC 16 VALVE Just for old time sake. Now regarding your problem.  Contact a company called "Mad Enhancements" they are at unit 2/ 6  'O'malley St in Osborne park, pH no 92428434, speak to Adrian, tell him I sent you.
What are the mods you have done to the Subaru??